From 05783c8ed68f7b393d28f5df64f98d3d1eee5537 Mon Sep 17 00:00:00 2001
From: Mark Rousskov <mark.simulacrum@gmail.com>
Date: Sun, 17 Mar 2024 22:26:39 -0400
Subject: [PATCH 01/23] Codegen const panic messages as function calls

This skips emitting extra arguments at every callsite (of which there
can be many). For a librustc_driver build with overflow checks enabled,
this cuts 0.7MB from the resulting binary.
---
 example/mini_core.rs | 30 ++++++++++++++++++++++++++++++
 src/base.rs          | 24 ++++++++----------------
 2 files changed, 38 insertions(+), 16 deletions(-)

diff --git a/example/mini_core.rs b/example/mini_core.rs
index 39988cf64e5..1cee5131907 100644
--- a/example/mini_core.rs
+++ b/example/mini_core.rs
@@ -465,6 +465,36 @@ pub fn panic(_msg: &'static str) -> ! {
     }
 }
 
+macro_rules! panic_const {
+    ($($lang:ident = $message:expr,)+) => {
+        #[cfg(not(bootstrap))]
+        pub mod panic_const {
+            use super::*;
+
+            $(
+                #[track_caller]
+                #[lang = stringify!($lang)]
+                pub fn $lang() -> ! {
+                    panic($message);
+                }
+            )+
+        }
+    }
+}
+
+panic_const! {
+    panic_const_add_overflow = "attempt to add with overflow",
+    panic_const_sub_overflow = "attempt to subtract with overflow",
+    panic_const_mul_overflow = "attempt to multiply with overflow",
+    panic_const_div_overflow = "attempt to divide with overflow",
+    panic_const_rem_overflow = "attempt to calculate the remainder with overflow",
+    panic_const_neg_overflow = "attempt to negate with overflow",
+    panic_const_shr_overflow = "attempt to shift right with overflow",
+    panic_const_shl_overflow = "attempt to shift left with overflow",
+    panic_const_div_by_zero = "attempt to divide by zero",
+    panic_const_rem_by_zero = "attempt to calculate the remainder with a divisor of zero",
+}
+
 #[lang = "panic_bounds_check"]
 #[track_caller]
 fn panic_bounds_check(index: usize, len: usize) -> ! {
diff --git a/src/base.rs b/src/base.rs
index 2415c2c90b2..f597f084e70 100644
--- a/src/base.rs
+++ b/src/base.rs
@@ -369,8 +369,14 @@ fn codegen_fn_body(fx: &mut FunctionCx<'_, '_, '_>, start_block: Block) {
                         );
                     }
                     _ => {
-                        let msg_str = msg.description();
-                        codegen_panic(fx, msg_str, source_info);
+                        let location = fx.get_caller_location(source_info).load_scalar(fx);
+
+                        codegen_panic_inner(
+                            fx,
+                            msg.panic_function(),
+                            &[location],
+                            Some(source_info.span),
+                        );
                     }
                 }
             }
@@ -954,20 +960,6 @@ pub(crate) fn codegen_operand<'tcx>(
     }
 }
 
-pub(crate) fn codegen_panic<'tcx>(
-    fx: &mut FunctionCx<'_, '_, 'tcx>,
-    msg_str: &str,
-    source_info: mir::SourceInfo,
-) {
-    let location = fx.get_caller_location(source_info).load_scalar(fx);
-
-    let msg_ptr = fx.anonymous_str(msg_str);
-    let msg_len = fx.bcx.ins().iconst(fx.pointer_type, i64::try_from(msg_str.len()).unwrap());
-    let args = [msg_ptr, msg_len, location];
-
-    codegen_panic_inner(fx, rustc_hir::LangItem::Panic, &args, Some(source_info.span));
-}
-
 pub(crate) fn codegen_panic_nounwind<'tcx>(
     fx: &mut FunctionCx<'_, '_, 'tcx>,
     msg_str: &str,

From c7ab6b5030a320cbc34b730fdc8d06bac6f7f438 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Sat, 23 Mar 2024 12:21:20 +0100
Subject: [PATCH 02/23] rename MIR int2ptr casts to match library name

---
 src/base.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/base.rs b/src/base.rs
index 047dc56a32e..e7823013260 100644
--- a/src/base.rs
+++ b/src/base.rs
@@ -642,7 +642,7 @@ fn codegen_stmt<'tcx>(
                     | CastKind::FnPtrToPtr
                     | CastKind::PtrToPtr
                     | CastKind::PointerExposeAddress
-                    | CastKind::PointerFromExposedAddress,
+                    | CastKind::PointerWithExposedProvenance,
                     ref operand,
                     to_ty,
                 ) => {

From 905550149f5c85cd17f4eadf55d0fdc8e6420777 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Sat, 23 Mar 2024 23:00:53 +0100
Subject: [PATCH 03/23] also rename the SIMD intrinsic

---
 src/intrinsics/simd.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/intrinsics/simd.rs b/src/intrinsics/simd.rs
index 4d55a95aa9d..783ad5d1dd1 100644
--- a/src/intrinsics/simd.rs
+++ b/src/intrinsics/simd.rs
@@ -965,7 +965,7 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
             });
         }
 
-        sym::simd_expose_addr | sym::simd_from_exposed_addr | sym::simd_cast_ptr => {
+        sym::simd_expose_addr | sym::simd_with_exposed_provenance | sym::simd_cast_ptr => {
             intrinsic_args!(fx, args => (arg); intrinsic);
             ret.write_cvalue_transmute(fx, arg);
         }

From 629a772585f9d003e583a8b60658692ac5a47c9e Mon Sep 17 00:00:00 2001
From: Scott McMurray <scottmcm@users.noreply.github.com>
Date: Sun, 5 Mar 2023 20:19:41 -0800
Subject: [PATCH 04/23] Add+Use `mir::BinOp::Cmp`

---
 src/codegen_i128.rs |  3 ++-
 src/num.rs          | 24 ++++++++++++++++++++++--
 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/src/codegen_i128.rs b/src/codegen_i128.rs
index b2bc289a5b6..4a5ef352151 100644
--- a/src/codegen_i128.rs
+++ b/src/codegen_i128.rs
@@ -68,7 +68,7 @@ pub(crate) fn maybe_codegen<'tcx>(
                 Some(CValue::by_val(ret_val, lhs.layout()))
             }
         }
-        BinOp::Lt | BinOp::Le | BinOp::Eq | BinOp::Ge | BinOp::Gt | BinOp::Ne => None,
+        BinOp::Lt | BinOp::Le | BinOp::Eq | BinOp::Ge | BinOp::Gt | BinOp::Ne | BinOp::Cmp => None,
         BinOp::Shl | BinOp::ShlUnchecked | BinOp::Shr | BinOp::ShrUnchecked => None,
     }
 }
@@ -134,6 +134,7 @@ pub(crate) fn maybe_codegen_checked<'tcx>(
         BinOp::AddUnchecked | BinOp::SubUnchecked | BinOp::MulUnchecked => unreachable!(),
         BinOp::Offset => unreachable!("offset should only be used on pointers, not 128bit ints"),
         BinOp::Div | BinOp::Rem => unreachable!(),
+        BinOp::Cmp => unreachable!(),
         BinOp::Lt | BinOp::Le | BinOp::Eq | BinOp::Ge | BinOp::Gt | BinOp::Ne => unreachable!(),
         BinOp::Shl | BinOp::ShlUnchecked | BinOp::Shr | BinOp::ShrUnchecked => unreachable!(),
     }
diff --git a/src/num.rs b/src/num.rs
index 8992f40fb90..796182418ad 100644
--- a/src/num.rs
+++ b/src/num.rs
@@ -40,6 +40,22 @@ pub(crate) fn bin_op_to_intcc(bin_op: BinOp, signed: bool) -> Option<IntCC> {
     })
 }
 
+fn codegen_three_way_compare<'tcx>(
+    fx: &mut FunctionCx<'_, '_, 'tcx>,
+    signed: bool,
+    lhs: Value,
+    rhs: Value,
+) -> CValue<'tcx> {
+    // This emits `(lhs > rhs) - (lhs < rhs)`, which is cranelift's preferred form per
+    // <https://github.com/bytecodealliance/wasmtime/blob/8052bb9e3b792503b225f2a5b2ba3bc023bff462/cranelift/codegen/src/prelude_opt.isle#L41-L47>
+    let gt_cc = crate::num::bin_op_to_intcc(BinOp::Gt, signed).unwrap();
+    let lt_cc = crate::num::bin_op_to_intcc(BinOp::Lt, signed).unwrap();
+    let gt = fx.bcx.ins().icmp(gt_cc, lhs, rhs);
+    let lt = fx.bcx.ins().icmp(lt_cc, lhs, rhs);
+    let val = fx.bcx.ins().isub(gt, lt);
+    CValue::by_val(val, fx.layout_of(fx.tcx.ty_ordering_enum(Some(fx.mir.span))))
+}
+
 fn codegen_compare_bin_op<'tcx>(
     fx: &mut FunctionCx<'_, '_, 'tcx>,
     bin_op: BinOp,
@@ -47,6 +63,10 @@ fn codegen_compare_bin_op<'tcx>(
     lhs: Value,
     rhs: Value,
 ) -> CValue<'tcx> {
+    if bin_op == BinOp::Cmp {
+        return codegen_three_way_compare(fx, signed, lhs, rhs);
+    }
+
     let intcc = crate::num::bin_op_to_intcc(bin_op, signed).unwrap();
     let val = fx.bcx.ins().icmp(intcc, lhs, rhs);
     CValue::by_val(val, fx.layout_of(fx.tcx.types.bool))
@@ -59,7 +79,7 @@ pub(crate) fn codegen_binop<'tcx>(
     in_rhs: CValue<'tcx>,
 ) -> CValue<'tcx> {
     match bin_op {
-        BinOp::Eq | BinOp::Lt | BinOp::Le | BinOp::Ne | BinOp::Ge | BinOp::Gt => {
+        BinOp::Eq | BinOp::Lt | BinOp::Le | BinOp::Ne | BinOp::Ge | BinOp::Gt | BinOp::Cmp => {
             match in_lhs.layout().ty.kind() {
                 ty::Bool | ty::Uint(_) | ty::Int(_) | ty::Char => {
                     let signed = type_sign(in_lhs.layout().ty);
@@ -160,7 +180,7 @@ pub(crate) fn codegen_int_binop<'tcx>(
         }
         BinOp::Offset => unreachable!("Offset is not an integer operation"),
         // Compare binops handles by `codegen_binop`.
-        BinOp::Eq | BinOp::Ne | BinOp::Lt | BinOp::Le | BinOp::Gt | BinOp::Ge => {
+        BinOp::Eq | BinOp::Ne | BinOp::Lt | BinOp::Le | BinOp::Gt | BinOp::Ge | BinOp::Cmp => {
             unreachable!("{:?}({:?}, {:?})", bin_op, in_lhs.layout().ty, in_rhs.layout().ty);
         }
     };

From c5c31447a7f2d8ffc03f058e3d39cff7627d3eb1 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Thu, 28 Mar 2024 11:43:35 +0000
Subject: [PATCH 05/23] Merge commit '09fae60a86b848a2fc0ad219ecc4e438dc1eef86'
 into sync_cg_clif-2024-03-28

---
 Cargo.lock                                    |  56 ++---
 Cargo.toml                                    |  12 +-
 ...oretests-Disable-not-compiling-tests.patch |   2 +-
 rust-toolchain                                |   2 +-
 scripts/rustc-clif.rs                         |   7 +-
 scripts/rustdoc-clif.rs                       |  12 +-
 scripts/test_rustc_tests.sh                   |  54 +++--
 src/abi/mod.rs                                |   7 +-
 src/abi/returning.rs                          |  26 +--
 src/base.rs                                   |  10 +-
 src/common.rs                                 |  31 +--
 src/constant.rs                               |  66 +++---
 src/debuginfo/emit.rs                         |  14 ++
 src/debuginfo/line_info.rs                    | 115 +++++-----
 src/debuginfo/mod.rs                          | 216 ++++++++++++++++--
 src/debuginfo/object.rs                       |  13 +-
 src/debuginfo/types.rs                        | 204 +++++++++++++++++
 src/debuginfo/unwind.rs                       |  10 +-
 src/driver/aot.rs                             | 204 +++++++++++++++--
 src/driver/jit.rs                             |  10 +-
 src/global_asm.rs                             |  34 ++-
 src/intrinsics/mod.rs                         |   5 +
 src/lib.rs                                    |  13 +-
 src/vtable.rs                                 |   8 +-
 24 files changed, 840 insertions(+), 291 deletions(-)
 create mode 100644 src/debuginfo/types.rs

diff --git a/Cargo.lock b/Cargo.lock
index e308cf80284..8fdc1941de8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -46,18 +46,18 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "cranelift-bforest"
-version = "0.105.2"
+version = "0.106.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9515fcc42b6cb5137f76b84c1a6f819782d0cf12473d145d3bc5cd67eedc8bc2"
+checksum = "6a535eb1cf5a6003197dc569320c40c1cb2d2f97ef5d5348eebf067f20957381"
 dependencies = [
  "cranelift-entity",
 ]
 
 [[package]]
 name = "cranelift-codegen"
-version = "0.105.2"
+version = "0.106.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ad827c6071bfe6d22de1bc331296a29f9ddc506ff926d8415b435ec6a6efce0"
+checksum = "11b5066db32cec1492573827183af2142d2d88fe85a83cfc9e73f0f63d3788d4"
 dependencies = [
  "bumpalo",
  "cranelift-bforest",
@@ -76,39 +76,39 @@ dependencies = [
 
 [[package]]
 name = "cranelift-codegen-meta"
-version = "0.105.2"
+version = "0.106.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "10e6b36237a9ca2ce2fb4cc7741d418a080afa1327402138412ef85d5367bef1"
+checksum = "64942e5774308e835fbad4dd25f253105412c90324631910e1ec27963147bddb"
 dependencies = [
  "cranelift-codegen-shared",
 ]
 
 [[package]]
 name = "cranelift-codegen-shared"
-version = "0.105.2"
+version = "0.106.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c36bf4bfb86898a94ccfa773a1f86e8a5346b1983ff72059bdd2db4600325251"
+checksum = "c39c33db9a86dd6d8d04166a10c53deb477aeea3500eaaefca682e4eda9bb986"
 
 [[package]]
 name = "cranelift-control"
-version = "0.105.2"
+version = "0.106.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7cbf36560e7a6bd1409ca91e7b43b2cc7ed8429f343d7605eadf9046e8fac0d0"
+checksum = "4b7fc4937613aea3156a0538800a17bf56f345a5da2e79ae3df58488c93d867f"
 dependencies = [
  "arbitrary",
 ]
 
 [[package]]
 name = "cranelift-entity"
-version = "0.105.2"
+version = "0.106.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a71e11061a75b1184c09bea97c026a88f08b59ade96a7bb1f259d4ea0df2e942"
+checksum = "f85575e79a153ce1ddbfb7fe1813519b4bfe1eb200cc9c8353b45ad123ae4d36"
 
 [[package]]
 name = "cranelift-frontend"
-version = "0.105.2"
+version = "0.106.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af5d4da63143ee3485c7bcedde0a818727d737d1083484a0ceedb8950c89e495"
+checksum = "bbc31d6c0ab2249fe0c21e988256b42f5f401ab2673b4fc40076c82a698bdfb9"
 dependencies = [
  "cranelift-codegen",
  "log",
@@ -118,15 +118,15 @@ dependencies = [
 
 [[package]]
 name = "cranelift-isle"
-version = "0.105.2"
+version = "0.106.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "457a9832b089e26f5eea70dcf49bed8ec6edafed630ce7c83161f24d46ab8085"
+checksum = "dc14f37e3314c0e4c53779c2f46753bf242efff76ee9473757a1fff3b495ad37"
 
 [[package]]
 name = "cranelift-jit"
-version = "0.105.2"
+version = "0.106.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0af95fe68d5a10919012c8db82b1d59820405b8001c8c6d05f94b08031334fa9"
+checksum = "cfdd1942f3233176a68c285380dbc84ff0440246a1bce308611c0a385b56ab18"
 dependencies = [
  "anyhow",
  "cranelift-codegen",
@@ -144,9 +144,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-module"
-version = "0.105.2"
+version = "0.106.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11b0b201fa10a4014062d4c56c307c8d18fdf9a84cb5279efe6080241f42c7a7"
+checksum = "121b2b5a16912554a1b9aace75b9b21eca49f28e33cbfbad4786dd9bc5361a5c"
 dependencies = [
  "anyhow",
  "cranelift-codegen",
@@ -155,9 +155,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-native"
-version = "0.105.2"
+version = "0.106.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b490d579df1ce365e1ea359e24ed86d82289fa785153327c2f6a69a59a731e4"
+checksum = "2ea5375f76ab31f9800a23fb2b440810286a6f669a3eb467cdd7ff255ea64268"
 dependencies = [
  "cranelift-codegen",
  "libc",
@@ -166,9 +166,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-object"
-version = "0.105.2"
+version = "0.106.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb7e821ac6db471bcdbd004e5a4fa0d374f1046bd3a2ce278c332e0b0c01ca63"
+checksum = "f34e04419ab41661e973d90a73aa7b12771455394dae7a69b101a9b7e7589db7"
 dependencies = [
  "anyhow",
  "cranelift-codegen",
@@ -392,9 +392,9 @@ dependencies = [
 
 [[package]]
 name = "target-lexicon"
-version = "0.12.12"
+version = "0.12.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14c39fd04924ca3a864207c66fc2cd7d22d7c016007f9ce846cbb9326331930a"
+checksum = "e1fc403891a21bcfb7c37834ba66a547a8f402146eba7265b5a6d88059c9ff2f"
 
 [[package]]
 name = "unicode-ident"
@@ -410,9 +410,9 @@ checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
 [[package]]
 name = "wasmtime-jit-icache-coherence"
-version = "18.0.2"
+version = "19.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33f4121cb29dda08139b2824a734dd095d83ce843f2d613a84eb580b9cfc17ac"
+checksum = "2796e4b4989db62899d2117e1e0258b839d088c044591b14e3a0396e7b3ae53a"
 dependencies = [
  "cfg-if",
  "libc",
diff --git a/Cargo.toml b/Cargo.toml
index c0b9e27b179..d8a855b0383 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,12 +8,12 @@ crate-type = ["dylib"]
 
 [dependencies]
 # These have to be in sync with each other
-cranelift-codegen = { version = "0.105.2", default-features = false, features = ["std", "unwind", "all-arch"] }
-cranelift-frontend = { version = "0.105.2" }
-cranelift-module = { version = "0.105.2" }
-cranelift-native = { version = "0.105.2" }
-cranelift-jit = { version = "0.105.2", optional = true }
-cranelift-object = { version = "0.105.2" }
+cranelift-codegen = { version = "0.106.0", default-features = false, features = ["std", "unwind", "all-arch"] }
+cranelift-frontend = { version = "0.106.0" }
+cranelift-module = { version = "0.106.0" }
+cranelift-native = { version = "0.106.0" }
+cranelift-jit = { version = "0.106.0", optional = true }
+cranelift-object = { version = "0.106.0" }
 target-lexicon = "0.12.0"
 gimli = { version = "0.28", default-features = false, features = ["write"]}
 object = { version = "0.32", default-features = false, features = ["std", "read_core", "write", "archive", "coff", "elf", "macho", "pe"] }
diff --git a/patches/0022-coretests-Disable-not-compiling-tests.patch b/patches/0022-coretests-Disable-not-compiling-tests.patch
index 5442c3cef9e..7cf7f86700e 100644
--- a/patches/0022-coretests-Disable-not-compiling-tests.patch
+++ b/patches/0022-coretests-Disable-not-compiling-tests.patch
@@ -39,6 +39,6 @@ index 42a26ae..5ac1042 100644
 +#![cfg(test)]
  #![feature(alloc_layout_extra)]
  #![feature(array_chunks)]
- #![feature(array_windows)]
+ #![feature(array_ptr_get)]
 --
 2.21.0 (Apple Git-122)
diff --git a/rust-toolchain b/rust-toolchain
index f3cd4cbe493..612fc61ec27 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2024-03-16"
+channel = "nightly-2024-03-28"
 components = ["rust-src", "rustc-dev", "llvm-tools"]
diff --git a/scripts/rustc-clif.rs b/scripts/rustc-clif.rs
index 550f2051553..92defd21cd9 100644
--- a/scripts/rustc-clif.rs
+++ b/scripts/rustc-clif.rs
@@ -26,9 +26,10 @@ fn main() {
         codegen_backend_arg.push(cg_clif_dylib_path);
         args.push(codegen_backend_arg);
     }
-    if !passed_args.iter().any(|arg| {
-        arg == "--sysroot" || arg.to_str().is_some_and(|s| s.starts_with("--sysroot="))
-    }) {
+    if !passed_args
+        .iter()
+        .any(|arg| arg == "--sysroot" || arg.to_str().is_some_and(|s| s.starts_with("--sysroot=")))
+    {
         args.push(OsString::from("--sysroot"));
         args.push(OsString::from(sysroot.to_str().unwrap()));
     }
diff --git a/scripts/rustdoc-clif.rs b/scripts/rustdoc-clif.rs
index f7d1bdbc4c6..1cad312bb79 100644
--- a/scripts/rustdoc-clif.rs
+++ b/scripts/rustdoc-clif.rs
@@ -26,12 +26,18 @@ fn main() {
         codegen_backend_arg.push(cg_clif_dylib_path);
         args.push(codegen_backend_arg);
     }
-    if !passed_args.iter().any(|arg| {
-        arg == "--sysroot" || arg.to_str().is_some_and(|s| s.starts_with("--sysroot="))
-    }) {
+    if !passed_args
+        .iter()
+        .any(|arg| arg == "--sysroot" || arg.to_str().is_some_and(|s| s.starts_with("--sysroot=")))
+    {
         args.push(OsString::from("--sysroot"));
         args.push(OsString::from(sysroot.to_str().unwrap()));
     }
+    if passed_args.is_empty() {
+        // Don't pass any arguments when the user didn't pass any arguments
+        // either to ensure the help message is shown.
+        args.clear();
+    }
     args.extend(passed_args);
 
     let rustdoc = if let Some(rustdoc) = option_env!("RUSTDOC") {
diff --git a/scripts/test_rustc_tests.sh b/scripts/test_rustc_tests.sh
index f4e10f7dd19..f42a008dc0c 100755
--- a/scripts/test_rustc_tests.sh
+++ b/scripts/test_rustc_tests.sh
@@ -10,14 +10,6 @@ pushd rust
 
 command -v rg >/dev/null 2>&1 || cargo install ripgrep
 
-# FIXME(rust-lang/rust#122196) fix stage0 rmake.rs run-make tests and remove
-# this workaround
-for test in $(ls tests/run-make); do
-  if [[ -e "tests/run-make/$test/rmake.rs" ]]; then
-    rm -r "tests/run-make/$test"
-  fi
-done
-
 # FIXME remove this workaround once ICE tests no longer emit an outdated nightly message
 for test in $(rg -i --files-with-matches "//@(\[.*\])? failure-status: 101" tests/ui); do
   echo "rm $test"
@@ -42,7 +34,6 @@ rm tests/ui/parser/unclosed-delimiter-in-dep.rs # submodule contains //~ERROR
 # ================
 
 # vendor intrinsics
-rm tests/ui/simd/array-type.rs # "Index argument for `simd_insert` is not a constant"
 rm tests/ui/asm/x86_64/evex512-implicit-feature.rs # unimplemented AVX512 x86 vendor intrinsic
 
 # exotic linkages
@@ -59,12 +50,9 @@ rm -r tests/run-make/c-link-to-rust-va-list-fn # requires callee side vararg sup
 rm -r tests/run-pass-valgrind/unsized-locals
 
 # misc unimplemented things
-rm tests/ui/intrinsics/intrinsic-nearby.rs # unimplemented nearbyintf32 and nearbyintf64 intrinsics
 rm tests/ui/target-feature/missing-plusminus.rs # error not implemented
-rm -r tests/run-make/emit-named-files # requires full --emit support
 rm -r tests/run-make/repr128-dwarf # debuginfo test
 rm -r tests/run-make/split-debuginfo # same
-rm -r tests/run-make/symbols-include-type-name # --emit=asm not supported
 rm -r tests/run-make/target-specs # i686 not supported by Cranelift
 rm -r tests/run-make/mismatching-target-triples # same
 rm tests/ui/asm/x86_64/issue-96797.rs # const and sym inline asm operands don't work entirely correctly
@@ -102,6 +90,17 @@ rm tests/ui/abi/stack-protector.rs # requires stack protector support
 rm -r tests/run-make/emit-stack-sizes # requires support for -Z emit-stack-sizes
 rm -r tests/run-make/optimization-remarks-dir # remarks are LLVM specific
 
+# requires asm, llvm-ir and/or llvm-bc emit support
+# =============================================
+rm -r tests/run-make/emit-named-files
+rm -r tests/run-make/issue-30063
+rm -r tests/run-make/multiple-emits
+rm -r tests/run-make/output-type-permutations
+rm -r tests/run-make/emit-to-stdout
+rm -r tests/run-make/compressed-debuginfo
+rm -r tests/run-make/symbols-include-type-name
+
+
 # giving different but possibly correct results
 # =============================================
 rm tests/ui/mir/mir_misc_casts.rs # depends on deduplication of constants
@@ -109,35 +108,21 @@ rm tests/ui/mir/mir_raw_fat_ptr.rs # same
 rm tests/ui/consts/issue-33537.rs # same
 rm tests/ui/consts/const-mut-refs-crate.rs # same
 
-# rustdoc-clif passes extra args, suppressing the help message when no args are passed
-rm -r tests/run-make/issue-88756-default-output
-
 # doesn't work due to the way the rustc test suite is invoked.
 # should work when using ./x.py test the way it is intended
 # ============================================================
 rm -r tests/run-make/remap-path-prefix-dwarf # requires llvm-dwarfdump
+rm -r tests/run-make/compiler-builtins # Expects lib/rustlib/src/rust to contains the standard library source
 
 # genuine bugs
 # ============
 rm tests/incremental/spike-neg1.rs # errors out for some reason
 rm tests/incremental/spike-neg2.rs # same
-
-rm -r tests/run-make/issue-51671 # wrong filename given in case of --emit=obj
-rm -r tests/run-make/issue-30063 # same
-rm -r tests/run-make/multiple-emits # same
-rm -r tests/run-make/output-type-permutations # same
-rm -r tests/run-make/used # same
-rm -r tests/run-make/no-alloc-shim
-rm -r tests/run-make/emit-to-stdout
-rm -r tests/run-make/compressed-debuginfo
-
 rm -r tests/run-make/extern-fn-explicit-align # argument alignment not yet supported
-
-rm tests/ui/codegen/subtyping-enforces-type-equality.rs # assert_assignable bug with Coroutine's
+rm -r tests/run-make/panic-abort-eh_frame # .eh_frame emitted with panic=abort
 
 # bugs in the test suite
 # ======================
-rm tests/ui/backtrace.rs # TODO warning
 rm tests/ui/process/nofile-limit.rs # TODO some AArch64 linking issue
 
 rm tests/ui/stdio-is-blocking.rs # really slow with unoptimized libstd
@@ -160,6 +145,19 @@ index ea06b620c4c..b969d0009c6 100644
  ifdef RUSTC_LINKER
  RUSTC := \$(RUSTC) -Clinker='\$(RUSTC_LINKER)'
  RUSTDOC := \$(RUSTDOC) -Clinker='\$(RUSTC_LINKER)'
+diff --git a/src/tools/run-make-support/src/rustdoc.rs b/src/tools/run-make-support/src/rustdoc.rs
+index 9607ff02f96..b7d97caf9a2 100644
+--- a/src/tools/run-make-support/src/rustdoc.rs
++++ b/src/tools/run-make-support/src/rustdoc.rs
+@@ -34,8 +34,6 @@ pub fn bare() -> Self {
+     /// Construct a \`rustdoc\` invocation with \`-L \$(TARGET_RPATH_DIR)\` set.
+     pub fn new() -> Self {
+         let mut cmd = setup_common();
+-        let target_rpath_dir = env::var_os("TARGET_RPATH_DIR").unwrap();
+-        cmd.arg(format!("-L{}", target_rpath_dir.to_string_lossy()));
+         Self { cmd }
+     }
+
 EOF
 
 echo "[TEST] rustc test suite"
diff --git a/src/abi/mod.rs b/src/abi/mod.rs
index b0af421008a..6363a0d59a4 100644
--- a/src/abi/mod.rs
+++ b/src/abi/mod.rs
@@ -222,17 +222,15 @@ pub(crate) fn codegen_fn_prelude<'tcx>(fx: &mut FunctionCx<'_, '_, 'tcx>, start_
         Spread(Vec<Option<CValue<'tcx>>>),
     }
 
-    let fn_abi = fx.fn_abi.take().unwrap();
-
     // FIXME implement variadics in cranelift
-    if fn_abi.c_variadic {
+    if fx.fn_abi.c_variadic {
         fx.tcx.dcx().span_fatal(
             fx.mir.span,
             "Defining variadic functions is not yet supported by Cranelift",
         );
     }
 
-    let mut arg_abis_iter = fn_abi.args.iter();
+    let mut arg_abis_iter = fx.fn_abi.args.iter();
 
     let func_params = fx
         .mir
@@ -279,7 +277,6 @@ pub(crate) fn codegen_fn_prelude<'tcx>(fx: &mut FunctionCx<'_, '_, 'tcx>, start_
     }
 
     assert!(arg_abis_iter.next().is_none(), "ArgAbi left behind");
-    fx.fn_abi = Some(fn_abi);
     assert!(block_params_iter.next().is_none(), "arg_value left behind");
 
     self::comments::add_locals_header_comment(fx);
diff --git a/src/abi/returning.rs b/src/abi/returning.rs
index 0799a22c6e1..e0f399e616e 100644
--- a/src/abi/returning.rs
+++ b/src/abi/returning.rs
@@ -12,27 +12,15 @@ pub(super) fn codegen_return_param<'tcx>(
     ssa_analyzed: &rustc_index::IndexSlice<Local, crate::analyze::SsaKind>,
     block_params_iter: &mut impl Iterator<Item = Value>,
 ) -> CPlace<'tcx> {
-    let (ret_place, ret_param): (_, SmallVec<[_; 2]>) = match fx.fn_abi.as_ref().unwrap().ret.mode {
+    let (ret_place, ret_param): (_, SmallVec<[_; 2]>) = match fx.fn_abi.ret.mode {
         PassMode::Ignore | PassMode::Direct(_) | PassMode::Pair(_, _) | PassMode::Cast { .. } => {
-            let is_ssa =
-                ssa_analyzed[RETURN_PLACE].is_ssa(fx, fx.fn_abi.as_ref().unwrap().ret.layout.ty);
-            (
-                super::make_local_place(
-                    fx,
-                    RETURN_PLACE,
-                    fx.fn_abi.as_ref().unwrap().ret.layout,
-                    is_ssa,
-                ),
-                smallvec![],
-            )
+            let is_ssa = ssa_analyzed[RETURN_PLACE].is_ssa(fx, fx.fn_abi.ret.layout.ty);
+            (super::make_local_place(fx, RETURN_PLACE, fx.fn_abi.ret.layout, is_ssa), smallvec![])
         }
         PassMode::Indirect { attrs: _, meta_attrs: None, on_stack: _ } => {
             let ret_param = block_params_iter.next().unwrap();
             assert_eq!(fx.bcx.func.dfg.value_type(ret_param), fx.pointer_type);
-            (
-                CPlace::for_ptr(Pointer::new(ret_param), fx.fn_abi.as_ref().unwrap().ret.layout),
-                smallvec![ret_param],
-            )
+            (CPlace::for_ptr(Pointer::new(ret_param), fx.fn_abi.ret.layout), smallvec![ret_param])
         }
         PassMode::Indirect { attrs: _, meta_attrs: Some(_), on_stack: _ } => {
             unreachable!("unsized return value")
@@ -45,8 +33,8 @@ pub(super) fn codegen_return_param<'tcx>(
         Some(RETURN_PLACE),
         None,
         &ret_param,
-        &fx.fn_abi.as_ref().unwrap().ret.mode,
-        fx.fn_abi.as_ref().unwrap().ret.layout,
+        &fx.fn_abi.ret.mode,
+        fx.fn_abi.ret.layout,
     );
 
     ret_place
@@ -115,7 +103,7 @@ pub(super) fn codegen_with_call_return_arg<'tcx>(
 
 /// Codegen a return instruction with the right return value(s) if any.
 pub(crate) fn codegen_return(fx: &mut FunctionCx<'_, '_, '_>) {
-    match fx.fn_abi.as_ref().unwrap().ret.mode {
+    match fx.fn_abi.ret.mode {
         PassMode::Ignore | PassMode::Indirect { attrs: _, meta_attrs: None, on_stack: _ } => {
             fx.bcx.ins().return_(&[]);
         }
diff --git a/src/base.rs b/src/base.rs
index dbce6d165d2..b4ea4e10a3d 100644
--- a/src/base.rs
+++ b/src/base.rs
@@ -11,7 +11,7 @@ use rustc_middle::ty::print::with_no_trimmed_paths;
 use rustc_monomorphize::is_call_from_compiler_builtins_to_upstream_monomorphization;
 
 use crate::constant::ConstantCx;
-use crate::debuginfo::FunctionDebugContext;
+use crate::debuginfo::{FunctionDebugContext, TypeDebugContext};
 use crate::prelude::*;
 use crate::pretty_clif::CommentWriter;
 
@@ -26,6 +26,7 @@ pub(crate) struct CodegenedFunction {
 pub(crate) fn codegen_fn<'tcx>(
     tcx: TyCtxt<'tcx>,
     cx: &mut crate::CodegenCx,
+    type_dbg: &mut TypeDebugContext<'tcx>,
     cached_func: Function,
     module: &mut dyn Module,
     instance: Instance<'tcx>,
@@ -69,8 +70,10 @@ pub(crate) fn codegen_fn<'tcx>(
     let pointer_type = target_config.pointer_type();
     let clif_comments = crate::pretty_clif::CommentWriter::new(tcx, instance);
 
+    let fn_abi = RevealAllLayoutCx(tcx).fn_abi_of_instance(instance, ty::List::empty());
+
     let func_debug_cx = if let Some(debug_context) = &mut cx.debug_context {
-        Some(debug_context.define_function(tcx, &symbol_name, mir.span))
+        Some(debug_context.define_function(tcx, type_dbg, instance, fn_abi, &symbol_name, mir.span))
     } else {
         None
     };
@@ -87,7 +90,7 @@ pub(crate) fn codegen_fn<'tcx>(
         instance,
         symbol_name,
         mir,
-        fn_abi: Some(RevealAllLayoutCx(tcx).fn_abi_of_instance(instance, ty::List::empty())),
+        fn_abi,
 
         bcx,
         block_map,
@@ -95,7 +98,6 @@ pub(crate) fn codegen_fn<'tcx>(
         caller_location: None, // set by `codegen_fn_prelude`
 
         clif_comments,
-        last_source_file: None,
         next_ssa_var: 0,
     };
 
diff --git a/src/common.rs b/src/common.rs
index a7c3d68ff8c..cf0b065414d 100644
--- a/src/common.rs
+++ b/src/common.rs
@@ -1,12 +1,9 @@
 use cranelift_codegen::isa::TargetFrontendConfig;
-use gimli::write::FileId;
-use rustc_data_structures::sync::Lrc;
 use rustc_index::IndexVec;
 use rustc_middle::ty::layout::{
     FnAbiError, FnAbiOfHelpers, FnAbiRequest, LayoutError, LayoutOfHelpers,
 };
 use rustc_span::source_map::Spanned;
-use rustc_span::SourceFile;
 use rustc_target::abi::call::FnAbi;
 use rustc_target::abi::{Integer, Primitive};
 use rustc_target::spec::{HasTargetSpec, Target};
@@ -294,7 +291,7 @@ pub(crate) struct FunctionCx<'m, 'clif, 'tcx: 'm> {
     pub(crate) instance: Instance<'tcx>,
     pub(crate) symbol_name: String,
     pub(crate) mir: &'tcx Body<'tcx>,
-    pub(crate) fn_abi: Option<&'tcx FnAbi<'tcx, Ty<'tcx>>>,
+    pub(crate) fn_abi: &'tcx FnAbi<'tcx, Ty<'tcx>>,
 
     pub(crate) bcx: FunctionBuilder<'clif>,
     pub(crate) block_map: IndexVec<BasicBlock, Block>,
@@ -305,11 +302,6 @@ pub(crate) struct FunctionCx<'m, 'clif, 'tcx: 'm> {
 
     pub(crate) clif_comments: crate::pretty_clif::CommentWriter,
 
-    /// Last accessed source file and it's debuginfo file id.
-    ///
-    /// For optimization purposes only
-    pub(crate) last_source_file: Option<(Lrc<SourceFile>, FileId)>,
-
     /// This should only be accessed by `CPlace::new_var`.
     pub(crate) next_ssa_var: u32,
 }
@@ -419,25 +411,8 @@ impl<'tcx> FunctionCx<'_, '_, 'tcx> {
 
     pub(crate) fn set_debug_loc(&mut self, source_info: mir::SourceInfo) {
         if let Some(debug_context) = &mut self.cx.debug_context {
-            let (file, line, column) =
-                DebugContext::get_span_loc(self.tcx, self.mir.span, source_info.span);
-
-            // add_source_file is very slow.
-            // Optimize for the common case of the current file not being changed.
-            let mut cached_file_id = None;
-            if let Some((ref last_source_file, last_file_id)) = self.last_source_file {
-                // If the allocations are not equal, the files may still be equal, but that
-                // doesn't matter, as this is just an optimization.
-                if rustc_data_structures::sync::Lrc::ptr_eq(last_source_file, &file) {
-                    cached_file_id = Some(last_file_id);
-                }
-            }
-
-            let file_id = if let Some(file_id) = cached_file_id {
-                file_id
-            } else {
-                debug_context.add_source_file(&file)
-            };
+            let (file_id, line, column) =
+                debug_context.get_span_loc(self.tcx, self.mir.span, source_info.span);
 
             let source_loc =
                 self.func_debug_cx.as_mut().unwrap().add_dbg_loc(file_id, line, column);
diff --git a/src/constant.rs b/src/constant.rs
index fc9b0f6ef02..635ed6c8e88 100644
--- a/src/constant.rs
+++ b/src/constant.rs
@@ -6,17 +6,16 @@ use cranelift_module::*;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc_middle::mir::interpret::{read_target_uint, AllocId, GlobalAlloc, Scalar};
-use rustc_middle::ty::ScalarInt;
+use rustc_middle::ty::{Binder, ExistentialTraitRef, ScalarInt};
 
 use crate::prelude::*;
 
 pub(crate) struct ConstantCx {
     todo: Vec<TodoItem>,
-    done: FxHashSet<DataId>,
     anon_allocs: FxHashMap<AllocId, DataId>,
 }
 
-#[derive(Copy, Clone, Debug)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
 enum TodoItem {
     Alloc(AllocId),
     Static(DefId),
@@ -24,19 +23,24 @@ enum TodoItem {
 
 impl ConstantCx {
     pub(crate) fn new() -> Self {
-        ConstantCx { todo: vec![], done: FxHashSet::default(), anon_allocs: FxHashMap::default() }
+        ConstantCx { todo: vec![], anon_allocs: FxHashMap::default() }
     }
 
     pub(crate) fn finalize(mut self, tcx: TyCtxt<'_>, module: &mut dyn Module) {
         define_all_allocs(tcx, module, &mut self);
-        self.done.clear();
     }
 }
 
-pub(crate) fn codegen_static(tcx: TyCtxt<'_>, module: &mut dyn Module, def_id: DefId) {
+pub(crate) fn codegen_static(tcx: TyCtxt<'_>, module: &mut dyn Module, def_id: DefId) -> DataId {
     let mut constants_cx = ConstantCx::new();
     constants_cx.todo.push(TodoItem::Static(def_id));
     constants_cx.finalize(tcx, module);
+
+    data_id_for_static(
+        tcx, module, def_id, false,
+        // For a declaration the stated mutability doesn't matter.
+        false,
+    )
 }
 
 pub(crate) fn codegen_tls_ref<'tcx>(
@@ -153,14 +157,12 @@ pub(crate) fn codegen_const_value<'tcx>(
                         fx.bcx.ins().func_addr(fx.pointer_type, local_func_id)
                     }
                     GlobalAlloc::VTable(ty, trait_ref) => {
-                        let alloc_id = fx.tcx.vtable_allocation((ty, trait_ref));
-                        let alloc = fx.tcx.global_alloc(alloc_id).unwrap_memory();
-                        // FIXME: factor this common code with the `Memory` arm into a function?
-                        let data_id = data_id_for_alloc_id(
+                        let data_id = data_id_for_vtable(
+                            fx.tcx,
                             &mut fx.constants_cx,
                             fx.module,
-                            alloc_id,
-                            alloc.inner().mutability,
+                            ty,
+                            trait_ref,
                         );
                         let local_data_id =
                             fx.module.declare_data_in_func(data_id, &mut fx.bcx.func);
@@ -208,12 +210,8 @@ fn pointer_for_allocation<'tcx>(
     alloc_id: AllocId,
 ) -> crate::pointer::Pointer {
     let alloc = fx.tcx.global_alloc(alloc_id).unwrap_memory();
-    let data_id = data_id_for_alloc_id(
-        &mut fx.constants_cx,
-        &mut *fx.module,
-        alloc_id,
-        alloc.inner().mutability,
-    );
+    let data_id =
+        data_id_for_alloc_id(&mut fx.constants_cx, fx.module, alloc_id, alloc.inner().mutability);
 
     let local_data_id = fx.module.declare_data_in_func(data_id, &mut fx.bcx.func);
     if fx.clif_comments.enabled() {
@@ -235,6 +233,17 @@ pub(crate) fn data_id_for_alloc_id(
         .or_insert_with(|| module.declare_anonymous_data(mutability.is_mut(), false).unwrap())
 }
 
+pub(crate) fn data_id_for_vtable<'tcx>(
+    tcx: TyCtxt<'tcx>,
+    cx: &mut ConstantCx,
+    module: &mut dyn Module,
+    ty: Ty<'tcx>,
+    trait_ref: Option<Binder<'tcx, ExistentialTraitRef<'tcx>>>,
+) -> DataId {
+    let alloc_id = tcx.vtable_allocation((ty, trait_ref));
+    data_id_for_alloc_id(cx, module, alloc_id, Mutability::Not)
+}
+
 fn data_id_for_static(
     tcx: TyCtxt<'_>,
     module: &mut dyn Module,
@@ -327,7 +336,12 @@ fn data_id_for_static(
 }
 
 fn define_all_allocs(tcx: TyCtxt<'_>, module: &mut dyn Module, cx: &mut ConstantCx) {
+    let mut done = FxHashSet::default();
     while let Some(todo_item) = cx.todo.pop() {
+        if !done.insert(todo_item) {
+            continue;
+        }
+
         let (data_id, alloc, section_name) = match todo_item {
             TodoItem::Alloc(alloc_id) => {
                 let alloc = match tcx.global_alloc(alloc_id) {
@@ -358,10 +372,6 @@ fn define_all_allocs(tcx: TyCtxt<'_>, module: &mut dyn Module, cx: &mut Constant
             }
         };
 
-        if cx.done.contains(&data_id) {
-            continue;
-        }
-
         let mut data = DataDescription::new();
         let alloc = alloc.inner();
         data.set_align(alloc.align.bytes());
@@ -384,13 +394,7 @@ fn define_all_allocs(tcx: TyCtxt<'_>, module: &mut dyn Module, cx: &mut Constant
         }
 
         let bytes = alloc.inspect_with_uninit_and_ptr_outside_interpreter(0..alloc.len()).to_vec();
-        if bytes.is_empty() {
-            // FIXME(bytecodealliance/wasmtime#7918) cranelift-jit has a bug where it causes UB on
-            // empty data objects
-            data.define(Box::new([0]));
-        } else {
-            data.define(bytes.into_boxed_slice());
-        }
+        data.define(bytes.into_boxed_slice());
 
         for &(offset, prov) in alloc.provenance().ptrs().iter() {
             let alloc_id = prov.alloc_id();
@@ -418,8 +422,7 @@ fn define_all_allocs(tcx: TyCtxt<'_>, module: &mut dyn Module, cx: &mut Constant
                     data_id_for_alloc_id(cx, module, alloc_id, target_alloc.inner().mutability)
                 }
                 GlobalAlloc::VTable(ty, trait_ref) => {
-                    let alloc_id = tcx.vtable_allocation((ty, trait_ref));
-                    data_id_for_alloc_id(cx, module, alloc_id, Mutability::Not)
+                    data_id_for_vtable(tcx, cx, module, ty, trait_ref)
                 }
                 GlobalAlloc::Static(def_id) => {
                     if tcx.codegen_fn_attrs(def_id).flags.contains(CodegenFnAttrFlags::THREAD_LOCAL)
@@ -446,7 +449,6 @@ fn define_all_allocs(tcx: TyCtxt<'_>, module: &mut dyn Module, cx: &mut Constant
         }
 
         module.define_data(data_id, &data).unwrap();
-        cx.done.insert(data_id);
     }
 
     assert!(cx.todo.is_empty(), "{:?}", cx.todo);
diff --git a/src/debuginfo/emit.rs b/src/debuginfo/emit.rs
index 81b819a5546..36af7d4450d 100644
--- a/src/debuginfo/emit.rs
+++ b/src/debuginfo/emit.rs
@@ -1,5 +1,6 @@
 //! Write the debuginfo into an object file.
 
+use cranelift_module::{DataId, FuncId};
 use cranelift_object::ObjectProduct;
 use gimli::write::{Address, AttributeValue, EndianVec, Result, Sections, Writer};
 use gimli::{RunTimeEndian, SectionId};
@@ -8,6 +9,18 @@ use rustc_data_structures::fx::FxHashMap;
 use super::object::WriteDebugInfo;
 use super::DebugContext;
 
+pub(super) fn address_for_func(func_id: FuncId) -> Address {
+    let symbol = func_id.as_u32();
+    assert!(symbol & 1 << 31 == 0);
+    Address::Symbol { symbol: symbol as usize, addend: 0 }
+}
+
+pub(super) fn address_for_data(data_id: DataId) -> Address {
+    let symbol = data_id.as_u32();
+    assert!(symbol & 1 << 31 == 0);
+    Address::Symbol { symbol: (symbol | 1 << 31) as usize, addend: 0 }
+}
+
 impl DebugContext {
     pub(crate) fn emit(&mut self, product: &mut ObjectProduct) {
         let unit_range_list_id = self.dwarf.unit.ranges.add(self.unit_range_list.clone());
@@ -171,6 +184,7 @@ impl Writer for WriterRelocate {
                 gimli::DW_EH_PE_pcrel => {
                     let size = match eh_pe.format() {
                         gimli::DW_EH_PE_sdata4 => 4,
+                        gimli::DW_EH_PE_sdata8 => 8,
                         _ => return Err(gimli::write::Error::UnsupportedPointerEncoding(eh_pe)),
                     };
                     self.relocs.push(DebugReloc {
diff --git a/src/debuginfo/line_info.rs b/src/debuginfo/line_info.rs
index d1b21d0a0b6..380eba437c2 100644
--- a/src/debuginfo/line_info.rs
+++ b/src/debuginfo/line_info.rs
@@ -5,14 +5,12 @@ use std::path::{Component, Path};
 
 use cranelift_codegen::binemit::CodeOffset;
 use cranelift_codegen::MachSrcLoc;
-use gimli::write::{
-    Address, AttributeValue, FileId, FileInfo, LineProgram, LineString, LineStringTable,
-};
-use rustc_data_structures::sync::Lrc;
+use gimli::write::{AttributeValue, FileId, FileInfo, LineProgram, LineString, LineStringTable};
 use rustc_span::{
     FileName, Pos, SourceFile, SourceFileAndLine, SourceFileHash, SourceFileHashAlgorithm,
 };
 
+use crate::debuginfo::emit::address_for_func;
 use crate::debuginfo::FunctionDebugContext;
 use crate::prelude::*;
 
@@ -60,10 +58,11 @@ fn make_file_info(hash: SourceFileHash) -> Option<FileInfo> {
 
 impl DebugContext {
     pub(crate) fn get_span_loc(
+        &mut self,
         tcx: TyCtxt<'_>,
         function_span: Span,
         span: Span,
-    ) -> (Lrc<SourceFile>, u64, u64) {
+    ) -> (FileId, u64, u64) {
         // Based on https://github.com/rust-lang/rust/blob/e369d87b015a84653343032833d65d0545fd3f26/src/librustc_codegen_ssa/mir/mod.rs#L116-L131
         // In order to have a good line stepping behavior in debugger, we overwrite debug
         // locations of macro expansions with that of the outermost expansion site (when the macro is
@@ -71,61 +70,66 @@ impl DebugContext {
         let span = tcx.collapsed_debuginfo(span, function_span);
         match tcx.sess.source_map().lookup_line(span.lo()) {
             Ok(SourceFileAndLine { sf: file, line }) => {
+                let file_id = self.add_source_file(&file);
                 let line_pos = file.lines()[line];
                 let col = file.relative_position(span.lo()) - line_pos;
 
-                (file, u64::try_from(line).unwrap() + 1, u64::from(col.to_u32()) + 1)
+                (file_id, u64::try_from(line).unwrap() + 1, u64::from(col.to_u32()) + 1)
             }
-            Err(file) => (file, 0, 0),
+            Err(file) => (self.add_source_file(&file), 0, 0),
         }
     }
 
     pub(crate) fn add_source_file(&mut self, source_file: &SourceFile) -> FileId {
-        let line_program: &mut LineProgram = &mut self.dwarf.unit.line_program;
-        let line_strings: &mut LineStringTable = &mut self.dwarf.line_strings;
+        let cache_key = (source_file.stable_id, source_file.src_hash);
+        *self.created_files.entry(cache_key).or_insert_with(|| {
+            let line_program: &mut LineProgram = &mut self.dwarf.unit.line_program;
+            let line_strings: &mut LineStringTable = &mut self.dwarf.line_strings;
 
-        match &source_file.name {
-            FileName::Real(path) => {
-                let (dir_path, file_name) =
-                    split_path_dir_and_file(if self.should_remap_filepaths {
-                        path.remapped_path_if_available()
-                    } else {
-                        path.local_path_if_available()
-                    });
-                let dir_name = osstr_as_utf8_bytes(dir_path.as_os_str());
-                let file_name = osstr_as_utf8_bytes(file_name);
-
-                let dir_id = if !dir_name.is_empty() {
-                    let dir_name = LineString::new(dir_name, line_program.encoding(), line_strings);
-                    line_program.add_directory(dir_name)
-                } else {
-                    line_program.default_directory()
-                };
-                let file_name = LineString::new(file_name, line_program.encoding(), line_strings);
-
-                let info = make_file_info(source_file.src_hash);
-
-                line_program.file_has_md5 &= info.is_some();
-                line_program.add_file(file_name, dir_id, info)
-            }
-            // FIXME give more appropriate file names
-            filename => {
-                let dir_id = line_program.default_directory();
-                let dummy_file_name = LineString::new(
-                    filename
-                        .display(if self.should_remap_filepaths {
-                            FileNameDisplayPreference::Remapped
+            match &source_file.name {
+                FileName::Real(path) => {
+                    let (dir_path, file_name) =
+                        split_path_dir_and_file(if self.should_remap_filepaths {
+                            path.remapped_path_if_available()
                         } else {
-                            FileNameDisplayPreference::Local
-                        })
-                        .to_string()
-                        .into_bytes(),
-                    line_program.encoding(),
-                    line_strings,
-                );
-                line_program.add_file(dummy_file_name, dir_id, None)
+                            path.local_path_if_available()
+                        });
+                    let dir_name = osstr_as_utf8_bytes(dir_path.as_os_str());
+                    let file_name = osstr_as_utf8_bytes(file_name);
+
+                    let dir_id = if !dir_name.is_empty() {
+                        let dir_name =
+                            LineString::new(dir_name, line_program.encoding(), line_strings);
+                        line_program.add_directory(dir_name)
+                    } else {
+                        line_program.default_directory()
+                    };
+                    let file_name =
+                        LineString::new(file_name, line_program.encoding(), line_strings);
+
+                    let info = make_file_info(source_file.src_hash);
+
+                    line_program.file_has_md5 &= info.is_some();
+                    line_program.add_file(file_name, dir_id, info)
+                }
+                filename => {
+                    let dir_id = line_program.default_directory();
+                    let dummy_file_name = LineString::new(
+                        filename
+                            .display(if self.should_remap_filepaths {
+                                FileNameDisplayPreference::Remapped
+                            } else {
+                                FileNameDisplayPreference::Local
+                            })
+                            .to_string()
+                            .into_bytes(),
+                        line_program.encoding(),
+                        line_strings,
+                    );
+                    line_program.add_file(dummy_file_name, dir_id, None)
+                }
             }
-        }
+        })
     }
 }
 
@@ -138,7 +142,7 @@ impl FunctionDebugContext {
     pub(super) fn create_debug_lines(
         &mut self,
         debug_context: &mut DebugContext,
-        symbol: usize,
+        func_id: FuncId,
         context: &Context,
     ) -> CodeOffset {
         let create_row_for_span =
@@ -151,11 +155,7 @@ impl FunctionDebugContext {
                 debug_context.dwarf.unit.line_program.generate_row();
             };
 
-        debug_context
-            .dwarf
-            .unit
-            .line_program
-            .begin_sequence(Some(Address::Symbol { symbol, addend: 0 }));
+        debug_context.dwarf.unit.line_program.begin_sequence(Some(address_for_func(func_id)));
 
         let mut func_end = 0;
 
@@ -178,10 +178,7 @@ impl FunctionDebugContext {
         assert_ne!(func_end, 0);
 
         let entry = debug_context.dwarf.unit.get_mut(self.entry_id);
-        entry.set(
-            gimli::DW_AT_low_pc,
-            AttributeValue::Address(Address::Symbol { symbol, addend: 0 }),
-        );
+        entry.set(gimli::DW_AT_low_pc, AttributeValue::Address(address_for_func(func_id)));
         entry.set(gimli::DW_AT_high_pc, AttributeValue::Udata(u64::from(func_end)));
 
         func_end
diff --git a/src/debuginfo/mod.rs b/src/debuginfo/mod.rs
index 2d9c2ecdbc2..1bb0e590513 100644
--- a/src/debuginfo/mod.rs
+++ b/src/debuginfo/mod.rs
@@ -3,20 +3,29 @@
 mod emit;
 mod line_info;
 mod object;
+mod types;
 mod unwind;
 
 use cranelift_codegen::ir::Endianness;
 use cranelift_codegen::isa::TargetIsa;
+use cranelift_module::DataId;
 use gimli::write::{
-    Address, AttributeValue, DwarfUnit, FileId, LineProgram, LineString, Range, RangeList,
-    UnitEntryId,
+    Address, AttributeValue, DwarfUnit, Expression, FileId, LineProgram, LineString, Range,
+    RangeList, UnitEntryId,
 };
-use gimli::{Encoding, Format, LineEncoding, RunTimeEndian};
+use gimli::{AArch64, Encoding, Format, LineEncoding, Register, RiscV, RunTimeEndian, X86_64};
 use indexmap::IndexSet;
+use rustc_codegen_ssa::debuginfo::type_names;
+use rustc_hir::def::DefKind;
+use rustc_hir::def_id::DefIdMap;
 use rustc_session::Session;
+use rustc_span::{SourceFileHash, StableSourceFileId};
+use rustc_target::abi::call::FnAbi;
 
 pub(crate) use self::emit::{DebugReloc, DebugRelocName};
+pub(crate) use self::types::TypeDebugContext;
 pub(crate) use self::unwind::UnwindContext;
+use crate::debuginfo::emit::{address_for_data, address_for_func};
 use crate::prelude::*;
 
 pub(crate) fn producer(sess: &Session) -> String {
@@ -28,6 +37,10 @@ pub(crate) struct DebugContext {
 
     dwarf: DwarfUnit,
     unit_range_list: RangeList,
+    created_files: FxHashMap<(StableSourceFileId, SourceFileHash), FileId>,
+    stack_pointer_register: Register,
+    namespace_map: DefIdMap<UnitEntryId>,
+    array_size_type: UnitEntryId,
 
     should_remap_filepaths: bool,
 }
@@ -39,7 +52,7 @@ pub(crate) struct FunctionDebugContext {
 }
 
 impl DebugContext {
-    pub(crate) fn new(tcx: TyCtxt<'_>, isa: &dyn TargetIsa) -> Self {
+    pub(crate) fn new(tcx: TyCtxt<'_>, isa: &dyn TargetIsa, cgu_name: &str) -> Self {
         let encoding = Encoding {
             format: Format::Dwarf32,
             // FIXME this should be configurable
@@ -60,6 +73,15 @@ impl DebugContext {
             Endianness::Big => RunTimeEndian::Big,
         };
 
+        let stack_pointer_register = match isa.triple().architecture {
+            target_lexicon::Architecture::Aarch64(_) => AArch64::SP,
+            target_lexicon::Architecture::Riscv64(_) => RiscV::SP,
+            target_lexicon::Architecture::X86_64 | target_lexicon::Architecture::X86_64h => {
+                X86_64::RSP
+            }
+            _ => Register(u16::MAX),
+        };
+
         let mut dwarf = DwarfUnit::new(encoding);
 
         let should_remap_filepaths = tcx.sess.should_prefer_remapped_for_codegen();
@@ -95,7 +117,7 @@ impl DebugContext {
         dwarf.unit.line_program = line_program;
 
         {
-            let name = dwarf.strings.add(name);
+            let name = dwarf.strings.add(format!("{name}/@/{cgu_name}"));
             let comp_dir = dwarf.strings.add(comp_dir);
 
             let root = dwarf.unit.root();
@@ -103,41 +125,134 @@ impl DebugContext {
             root.set(gimli::DW_AT_producer, AttributeValue::StringRef(dwarf.strings.add(producer)));
             root.set(gimli::DW_AT_language, AttributeValue::Language(gimli::DW_LANG_Rust));
             root.set(gimli::DW_AT_name, AttributeValue::StringRef(name));
+
+            // This will be replaced when emitting the debuginfo. It is only
+            // defined here to ensure that the order of the attributes matches
+            // rustc.
+            root.set(gimli::DW_AT_stmt_list, AttributeValue::Udata(0));
+
             root.set(gimli::DW_AT_comp_dir, AttributeValue::StringRef(comp_dir));
             root.set(gimli::DW_AT_low_pc, AttributeValue::Address(Address::Constant(0)));
         }
 
+        let array_size_type = dwarf.unit.add(dwarf.unit.root(), gimli::DW_TAG_base_type);
+        let array_size_type_entry = dwarf.unit.get_mut(array_size_type);
+        array_size_type_entry.set(
+            gimli::DW_AT_name,
+            AttributeValue::StringRef(dwarf.strings.add("__ARRAY_SIZE_TYPE__")),
+        );
+        array_size_type_entry
+            .set(gimli::DW_AT_encoding, AttributeValue::Encoding(gimli::DW_ATE_unsigned));
+        array_size_type_entry.set(
+            gimli::DW_AT_byte_size,
+            AttributeValue::Udata(isa.frontend_config().pointer_bytes().into()),
+        );
+
         DebugContext {
             endian,
             dwarf,
             unit_range_list: RangeList(Vec::new()),
+            created_files: FxHashMap::default(),
+            stack_pointer_register,
+            namespace_map: DefIdMap::default(),
+            array_size_type,
             should_remap_filepaths,
         }
     }
 
-    pub(crate) fn define_function(
+    fn item_namespace(&mut self, tcx: TyCtxt<'_>, def_id: DefId) -> UnitEntryId {
+        if let Some(&scope) = self.namespace_map.get(&def_id) {
+            return scope;
+        }
+
+        let def_key = tcx.def_key(def_id);
+        let parent_scope = def_key
+            .parent
+            .map(|parent| self.item_namespace(tcx, DefId { krate: def_id.krate, index: parent }))
+            .unwrap_or(self.dwarf.unit.root());
+
+        let namespace_name = {
+            let mut output = String::new();
+            type_names::push_item_name(tcx, def_id, false, &mut output);
+            output
+        };
+        let namespace_name_id = self.dwarf.strings.add(namespace_name);
+
+        let scope = self.dwarf.unit.add(parent_scope, gimli::DW_TAG_namespace);
+        let scope_entry = self.dwarf.unit.get_mut(scope);
+        scope_entry.set(gimli::DW_AT_name, AttributeValue::StringRef(namespace_name_id));
+
+        self.namespace_map.insert(def_id, scope);
+        scope
+    }
+
+    pub(crate) fn define_function<'tcx>(
         &mut self,
-        tcx: TyCtxt<'_>,
-        name: &str,
+        tcx: TyCtxt<'tcx>,
+        type_dbg: &mut TypeDebugContext<'tcx>,
+        instance: Instance<'tcx>,
+        fn_abi: &'tcx FnAbi<'tcx, Ty<'tcx>>,
+        linkage_name: &str,
         function_span: Span,
     ) -> FunctionDebugContext {
-        let (file, line, column) = DebugContext::get_span_loc(tcx, function_span, function_span);
+        let (file_id, line, column) = self.get_span_loc(tcx, function_span, function_span);
 
-        let file_id = self.add_source_file(&file);
+        let scope = self.item_namespace(tcx, tcx.parent(instance.def_id()));
 
-        // FIXME: add to appropriate scope instead of root
-        let scope = self.dwarf.unit.root();
+        let mut name = String::new();
+        type_names::push_item_name(tcx, instance.def_id(), false, &mut name);
+
+        // Find the enclosing function, in case this is a closure.
+        let enclosing_fn_def_id = tcx.typeck_root_def_id(instance.def_id());
+
+        // We look up the generics of the enclosing function and truncate the args
+        // to their length in order to cut off extra stuff that might be in there for
+        // closures or coroutines.
+        let generics = tcx.generics_of(enclosing_fn_def_id);
+        let args = instance.args.truncate_to(tcx, generics);
+
+        type_names::push_generic_params(
+            tcx,
+            tcx.normalize_erasing_regions(ty::ParamEnv::reveal_all(), args),
+            enclosing_fn_def_id,
+            &mut name,
+        );
 
         let entry_id = self.dwarf.unit.add(scope, gimli::DW_TAG_subprogram);
         let entry = self.dwarf.unit.get_mut(entry_id);
+        let linkage_name_id =
+            if name != linkage_name { Some(self.dwarf.strings.add(linkage_name)) } else { None };
         let name_id = self.dwarf.strings.add(name);
+
+        // These will be replaced in FunctionDebugContext::finalize. They are
+        // only defined here to ensure that the order of the attributes matches
+        // rustc.
+        entry.set(gimli::DW_AT_low_pc, AttributeValue::Udata(0));
+        entry.set(gimli::DW_AT_high_pc, AttributeValue::Udata(0));
+
+        let mut frame_base_expr = Expression::new();
+        frame_base_expr.op_reg(self.stack_pointer_register);
+        entry.set(gimli::DW_AT_frame_base, AttributeValue::Exprloc(frame_base_expr));
+
+        if let Some(linkage_name_id) = linkage_name_id {
+            entry.set(gimli::DW_AT_linkage_name, AttributeValue::StringRef(linkage_name_id));
+        }
         // Gdb requires DW_AT_name. Otherwise the DW_TAG_subprogram is skipped.
         entry.set(gimli::DW_AT_name, AttributeValue::StringRef(name_id));
-        entry.set(gimli::DW_AT_linkage_name, AttributeValue::StringRef(name_id));
 
         entry.set(gimli::DW_AT_decl_file, AttributeValue::FileIndex(Some(file_id)));
         entry.set(gimli::DW_AT_decl_line, AttributeValue::Udata(line));
-        entry.set(gimli::DW_AT_decl_column, AttributeValue::Udata(column));
+
+        if !fn_abi.ret.is_ignore() {
+            let return_dw_ty = self.debug_type(tcx, type_dbg, fn_abi.ret.layout.ty);
+            let entry = self.dwarf.unit.get_mut(entry_id);
+            entry.set(gimli::DW_AT_type, AttributeValue::UnitRef(return_dw_ty));
+        }
+
+        if tcx.is_reachable_non_generic(instance.def_id()) {
+            let entry = self.dwarf.unit.get_mut(entry_id);
+            entry.set(gimli::DW_AT_external, AttributeValue::FlagPresent);
+        }
 
         FunctionDebugContext {
             entry_id,
@@ -145,6 +260,62 @@ impl DebugContext {
             source_loc_set: IndexSet::new(),
         }
     }
+
+    // Adapted from https://github.com/rust-lang/rust/blob/10a7aa14fed9b528b74b0f098c4899c37c09a9c7/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs#L1288-L1346
+    pub(crate) fn define_static<'tcx>(
+        &mut self,
+        tcx: TyCtxt<'tcx>,
+        type_dbg: &mut TypeDebugContext<'tcx>,
+        def_id: DefId,
+        data_id: DataId,
+    ) {
+        let DefKind::Static { nested, .. } = tcx.def_kind(def_id) else { bug!() };
+        if nested {
+            return;
+        }
+
+        let scope = self.item_namespace(tcx, tcx.parent(def_id));
+
+        let span = tcx.def_span(def_id);
+        let (file_id, line, _column) = self.get_span_loc(tcx, span, span);
+
+        let static_type = Instance::mono(tcx, def_id).ty(tcx, ty::ParamEnv::reveal_all());
+        let static_layout = tcx.layout_of(ty::ParamEnv::reveal_all().and(static_type)).unwrap();
+        // FIXME use the actual type layout
+        let type_id = self.debug_type(tcx, type_dbg, static_type);
+
+        let name = tcx.item_name(def_id);
+        let linkage_name = tcx.symbol_name(Instance::mono(tcx, def_id)).name;
+
+        let entry_id = self.dwarf.unit.add(scope, gimli::DW_TAG_variable);
+        let entry = self.dwarf.unit.get_mut(entry_id);
+        let linkage_name_id = if name.as_str() != linkage_name {
+            Some(self.dwarf.strings.add(linkage_name))
+        } else {
+            None
+        };
+        let name_id = self.dwarf.strings.add(name.as_str());
+
+        entry.set(gimli::DW_AT_name, AttributeValue::StringRef(name_id));
+        entry.set(gimli::DW_AT_type, AttributeValue::UnitRef(type_id));
+
+        if tcx.is_reachable_non_generic(def_id) {
+            entry.set(gimli::DW_AT_external, AttributeValue::FlagPresent);
+        }
+
+        entry.set(gimli::DW_AT_decl_file, AttributeValue::FileIndex(Some(file_id)));
+        entry.set(gimli::DW_AT_decl_line, AttributeValue::Udata(line));
+
+        entry.set(gimli::DW_AT_alignment, AttributeValue::Udata(static_layout.align.pref.bytes()));
+
+        let mut expr = Expression::new();
+        expr.op_addr(address_for_data(data_id));
+        entry.set(gimli::DW_AT_location, AttributeValue::Exprloc(expr));
+
+        if let Some(linkage_name_id) = linkage_name_id {
+            entry.set(gimli::DW_AT_linkage_name, AttributeValue::StringRef(linkage_name_id));
+        }
+    }
 }
 
 impl FunctionDebugContext {
@@ -154,21 +325,16 @@ impl FunctionDebugContext {
         func_id: FuncId,
         context: &Context,
     ) {
-        let symbol = func_id.as_u32() as usize;
+        let end = self.create_debug_lines(debug_context, func_id, context);
 
-        let end = self.create_debug_lines(debug_context, symbol, context);
-
-        debug_context.unit_range_list.0.push(Range::StartLength {
-            begin: Address::Symbol { symbol, addend: 0 },
-            length: u64::from(end),
-        });
+        debug_context
+            .unit_range_list
+            .0
+            .push(Range::StartLength { begin: address_for_func(func_id), length: u64::from(end) });
 
         let func_entry = debug_context.dwarf.unit.get_mut(self.entry_id);
         // Gdb requires both DW_AT_low_pc and DW_AT_high_pc. Otherwise the DW_TAG_subprogram is skipped.
-        func_entry.set(
-            gimli::DW_AT_low_pc,
-            AttributeValue::Address(Address::Symbol { symbol, addend: 0 }),
-        );
+        func_entry.set(gimli::DW_AT_low_pc, AttributeValue::Address(address_for_func(func_id)));
         // Using Udata for DW_AT_high_pc requires at least DWARF4
         func_entry.set(gimli::DW_AT_high_pc, AttributeValue::Udata(u64::from(end)));
     }
diff --git a/src/debuginfo/object.rs b/src/debuginfo/object.rs
index f1840a7bf73..27eabd8a0a6 100644
--- a/src/debuginfo/object.rs
+++ b/src/debuginfo/object.rs
@@ -1,4 +1,4 @@
-use cranelift_module::FuncId;
+use cranelift_module::{DataId, FuncId};
 use cranelift_object::ObjectProduct;
 use gimli::SectionId;
 use object::write::{Relocation, StandardSegment};
@@ -57,10 +57,13 @@ impl WriteDebugInfo for ObjectProduct {
         let (symbol, symbol_offset) = match reloc.name {
             DebugRelocName::Section(id) => (section_map.get(&id).unwrap().1, 0),
             DebugRelocName::Symbol(id) => {
-                let symbol_id = self.function_symbol(FuncId::from_u32(id.try_into().unwrap()));
-                self.object
-                    .symbol_section_and_offset(symbol_id)
-                    .expect("Debug reloc for undef sym???")
+                let id = id.try_into().unwrap();
+                let symbol_id = if id & 1 << 31 == 0 {
+                    self.function_symbol(FuncId::from_u32(id))
+                } else {
+                    self.data_symbol(DataId::from_u32(id & !(1 << 31)))
+                };
+                self.object.symbol_section_and_offset(symbol_id).unwrap_or((symbol_id, 0))
             }
         };
         self.object
diff --git a/src/debuginfo/types.rs b/src/debuginfo/types.rs
new file mode 100644
index 00000000000..7baf0a3868d
--- /dev/null
+++ b/src/debuginfo/types.rs
@@ -0,0 +1,204 @@
+// Adapted from https://github.com/rust-lang/rust/blob/10a7aa14fed9b528b74b0f098c4899c37c09a9c7/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
+
+use gimli::write::{AttributeValue, UnitEntryId};
+use rustc_codegen_ssa::debuginfo::type_names;
+use rustc_data_structures::fx::FxHashMap;
+use rustc_middle::ty::layout::LayoutOf;
+use rustc_middle::ty::{self, Ty, TyCtxt};
+
+use crate::{has_ptr_meta, DebugContext, RevealAllLayoutCx};
+
+#[derive(Default)]
+pub(crate) struct TypeDebugContext<'tcx> {
+    type_map: FxHashMap<Ty<'tcx>, UnitEntryId>,
+}
+
+/// Returns from the enclosing function if the type debuginfo node with the given
+/// unique ID can be found in the type map.
+macro_rules! return_if_type_created_in_meantime {
+    ($type_dbg:expr, $ty:expr) => {
+        if let Some(&type_id) = $type_dbg.type_map.get(&$ty) {
+            return type_id;
+        }
+    };
+}
+
+impl DebugContext {
+    pub(crate) fn debug_type<'tcx>(
+        &mut self,
+        tcx: TyCtxt<'tcx>,
+        type_dbg: &mut TypeDebugContext<'tcx>,
+        ty: Ty<'tcx>,
+    ) -> UnitEntryId {
+        if let Some(&type_id) = type_dbg.type_map.get(&ty) {
+            return type_id;
+        }
+
+        let type_id = match ty.kind() {
+            ty::Never | ty::Bool | ty::Char | ty::Int(_) | ty::Uint(_) | ty::Float(_) => {
+                self.basic_type(tcx, ty)
+            }
+            ty::Tuple(elems) if elems.is_empty() => self.basic_type(tcx, ty),
+            ty::Array(elem_ty, len) => self.array_type(
+                tcx,
+                type_dbg,
+                ty,
+                *elem_ty,
+                len.eval_target_usize(tcx, ty::ParamEnv::reveal_all()),
+            ),
+            // ty::Slice(_) | ty::Str
+            // ty::Dynamic
+            // ty::Foreign
+            ty::RawPtr(pointee_type, _) | ty::Ref(_, pointee_type, _) => {
+                self.pointer_type(tcx, type_dbg, ty, *pointee_type)
+            }
+            // ty::Adt(def, args) if def.is_box() && args.get(1).map_or(true, |arg| cx.layout_of(arg.expect_ty()).is_1zst())
+            // ty::FnDef(..) | ty::FnPtr(..)
+            // ty::Closure(..)
+            // ty::Adt(def, ..)
+            ty::Tuple(components) => self.tuple_type(tcx, type_dbg, ty, *components),
+            // ty::Param(_)
+            // FIXME implement remaining types and add unreachable!() to the fallback branch
+            _ => self.placeholder_for_type(tcx, type_dbg, ty),
+        };
+
+        type_dbg.type_map.insert(ty, type_id);
+
+        type_id
+    }
+
+    fn basic_type<'tcx>(&mut self, tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> UnitEntryId {
+        let (name, encoding) = match ty.kind() {
+            ty::Never => ("!", gimli::DW_ATE_unsigned),
+            ty::Tuple(elems) if elems.is_empty() => ("()", gimli::DW_ATE_unsigned),
+            ty::Bool => ("bool", gimli::DW_ATE_boolean),
+            ty::Char => ("char", gimli::DW_ATE_UTF),
+            ty::Int(int_ty) => (int_ty.name_str(), gimli::DW_ATE_signed),
+            ty::Uint(uint_ty) => (uint_ty.name_str(), gimli::DW_ATE_unsigned),
+            ty::Float(float_ty) => (float_ty.name_str(), gimli::DW_ATE_float),
+            _ => unreachable!(),
+        };
+
+        let type_id = self.dwarf.unit.add(self.dwarf.unit.root(), gimli::DW_TAG_base_type);
+        let type_entry = self.dwarf.unit.get_mut(type_id);
+        type_entry.set(gimli::DW_AT_name, AttributeValue::StringRef(self.dwarf.strings.add(name)));
+        type_entry.set(gimli::DW_AT_encoding, AttributeValue::Encoding(encoding));
+        type_entry.set(
+            gimli::DW_AT_byte_size,
+            AttributeValue::Udata(RevealAllLayoutCx(tcx).layout_of(ty).size.bytes()),
+        );
+
+        type_id
+    }
+
+    fn array_type<'tcx>(
+        &mut self,
+        tcx: TyCtxt<'tcx>,
+        type_dbg: &mut TypeDebugContext<'tcx>,
+        array_ty: Ty<'tcx>,
+        elem_ty: Ty<'tcx>,
+        len: u64,
+    ) -> UnitEntryId {
+        let elem_dw_ty = self.debug_type(tcx, type_dbg, elem_ty);
+
+        return_if_type_created_in_meantime!(type_dbg, array_ty);
+
+        let array_type_id = self.dwarf.unit.add(self.dwarf.unit.root(), gimli::DW_TAG_array_type);
+        let array_type_entry = self.dwarf.unit.get_mut(array_type_id);
+        array_type_entry.set(gimli::DW_AT_type, AttributeValue::UnitRef(elem_dw_ty));
+
+        let subrange_id = self.dwarf.unit.add(array_type_id, gimli::DW_TAG_subrange_type);
+        let subrange_entry = self.dwarf.unit.get_mut(subrange_id);
+        subrange_entry.set(gimli::DW_AT_type, AttributeValue::UnitRef(self.array_size_type));
+        subrange_entry.set(gimli::DW_AT_lower_bound, AttributeValue::Udata(0));
+        subrange_entry.set(gimli::DW_AT_count, AttributeValue::Udata(len));
+
+        array_type_id
+    }
+
+    fn pointer_type<'tcx>(
+        &mut self,
+        tcx: TyCtxt<'tcx>,
+        type_dbg: &mut TypeDebugContext<'tcx>,
+        ptr_type: Ty<'tcx>,
+        pointee_type: Ty<'tcx>,
+    ) -> UnitEntryId {
+        let pointee_dw_ty = self.debug_type(tcx, type_dbg, pointee_type);
+
+        return_if_type_created_in_meantime!(type_dbg, ptr_type);
+
+        let name = type_names::compute_debuginfo_type_name(tcx, ptr_type, true);
+
+        if !has_ptr_meta(tcx, ptr_type) {
+            let pointer_type_id =
+                self.dwarf.unit.add(self.dwarf.unit.root(), gimli::DW_TAG_pointer_type);
+            let pointer_entry = self.dwarf.unit.get_mut(pointer_type_id);
+            pointer_entry.set(gimli::DW_AT_type, AttributeValue::UnitRef(pointee_dw_ty));
+            pointer_entry
+                .set(gimli::DW_AT_name, AttributeValue::StringRef(self.dwarf.strings.add(name)));
+
+            pointer_type_id
+        } else {
+            // FIXME implement debuginfo for fat pointers
+            self.placeholder_for_type(tcx, type_dbg, ptr_type)
+        }
+    }
+
+    fn tuple_type<'tcx>(
+        &mut self,
+        tcx: TyCtxt<'tcx>,
+        type_dbg: &mut TypeDebugContext<'tcx>,
+        tuple_type: Ty<'tcx>,
+        components: &'tcx [Ty<'tcx>],
+    ) -> UnitEntryId {
+        let components = components
+            .into_iter()
+            .map(|&ty| (ty, self.debug_type(tcx, type_dbg, ty)))
+            .collect::<Vec<_>>();
+
+        return_if_type_created_in_meantime!(type_dbg, tuple_type);
+
+        let name = type_names::compute_debuginfo_type_name(tcx, tuple_type, false);
+        let layout = RevealAllLayoutCx(tcx).layout_of(tuple_type);
+
+        let tuple_type_id =
+            self.dwarf.unit.add(self.dwarf.unit.root(), gimli::DW_TAG_structure_type);
+        let tuple_entry = self.dwarf.unit.get_mut(tuple_type_id);
+        tuple_entry.set(gimli::DW_AT_name, AttributeValue::StringRef(self.dwarf.strings.add(name)));
+        tuple_entry.set(gimli::DW_AT_byte_size, AttributeValue::Udata(layout.size.bytes()));
+        tuple_entry.set(gimli::DW_AT_alignment, AttributeValue::Udata(layout.align.pref.bytes()));
+
+        for (i, (ty, dw_ty)) in components.into_iter().enumerate() {
+            let member_id = self.dwarf.unit.add(tuple_type_id, gimli::DW_TAG_member);
+            let member_entry = self.dwarf.unit.get_mut(member_id);
+            member_entry.set(
+                gimli::DW_AT_name,
+                AttributeValue::StringRef(self.dwarf.strings.add(format!("__{i}"))),
+            );
+            member_entry.set(gimli::DW_AT_type, AttributeValue::UnitRef(dw_ty));
+            member_entry.set(
+                gimli::DW_AT_alignment,
+                AttributeValue::Udata(RevealAllLayoutCx(tcx).layout_of(ty).align.pref.bytes()),
+            );
+            member_entry.set(
+                gimli::DW_AT_data_member_location,
+                AttributeValue::Udata(layout.fields.offset(i).bytes()),
+            );
+        }
+
+        tuple_type_id
+    }
+
+    fn placeholder_for_type<'tcx>(
+        &mut self,
+        tcx: TyCtxt<'tcx>,
+        type_dbg: &mut TypeDebugContext<'tcx>,
+        ty: Ty<'tcx>,
+    ) -> UnitEntryId {
+        self.debug_type(
+            tcx,
+            type_dbg,
+            Ty::new_array(tcx, tcx.types.u8, RevealAllLayoutCx(tcx).layout_of(ty).size.bytes()),
+        )
+    }
+}
diff --git a/src/debuginfo/unwind.rs b/src/debuginfo/unwind.rs
index 35278e6fb29..96ab7a29205 100644
--- a/src/debuginfo/unwind.rs
+++ b/src/debuginfo/unwind.rs
@@ -3,9 +3,10 @@
 use cranelift_codegen::ir::Endianness;
 use cranelift_codegen::isa::{unwind::UnwindInfo, TargetIsa};
 use cranelift_object::ObjectProduct;
-use gimli::write::{Address, CieId, EhFrame, FrameTable, Section};
+use gimli::write::{CieId, EhFrame, FrameTable, Section};
 use gimli::RunTimeEndian;
 
+use super::emit::address_for_func;
 use super::object::WriteDebugInfo;
 use crate::prelude::*;
 
@@ -47,11 +48,8 @@ impl UnwindContext {
 
         match unwind_info {
             UnwindInfo::SystemV(unwind_info) => {
-                self.frame_table.add_fde(
-                    self.cie_id.unwrap(),
-                    unwind_info
-                        .to_fde(Address::Symbol { symbol: func_id.as_u32() as usize, addend: 0 }),
-                );
+                self.frame_table
+                    .add_fde(self.cie_id.unwrap(), unwind_info.to_fde(address_for_func(func_id)));
             }
             UnwindInfo::WindowsX64(_) => {
                 // FIXME implement this
diff --git a/src/driver/aot.rs b/src/driver/aot.rs
index 757082a5fed..75268341a4f 100644
--- a/src/driver/aot.rs
+++ b/src/driver/aot.rs
@@ -1,25 +1,29 @@
 //! The AOT driver uses [`cranelift_object`] to write object files suitable for linking into a
 //! standalone executable.
 
-use std::fs::File;
-use std::path::PathBuf;
+use std::fs::{self, File};
+use std::path::{Path, PathBuf};
 use std::sync::Arc;
 use std::thread::JoinHandle;
 
 use cranelift_object::{ObjectBuilder, ObjectModule};
 use rustc_codegen_ssa::assert_module_sources::CguReuse;
+use rustc_codegen_ssa::back::link::ensure_removed;
 use rustc_codegen_ssa::back::metadata::create_compressed_metadata_file;
 use rustc_codegen_ssa::base::determine_cgu_reuse;
+use rustc_codegen_ssa::errors as ssa_errors;
 use rustc_codegen_ssa::{CodegenResults, CompiledModule, CrateInfo, ModuleKind};
 use rustc_data_structures::profiling::SelfProfilerRef;
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
+use rustc_metadata::fs::copy_to_stdout;
 use rustc_metadata::EncodedMetadata;
 use rustc_middle::dep_graph::{WorkProduct, WorkProductId};
 use rustc_middle::mir::mono::{CodegenUnit, MonoItem};
-use rustc_session::config::{DebugInfo, OutputFilenames, OutputType};
+use rustc_session::config::{DebugInfo, OutFileName, OutputFilenames, OutputType};
 use rustc_session::Session;
 
 use crate::concurrency_limiter::{ConcurrencyLimiter, ConcurrencyLimiterToken};
+use crate::debuginfo::TypeDebugContext;
 use crate::global_asm::GlobalAsmConfig;
 use crate::{prelude::*, BackendConfig};
 
@@ -53,6 +57,7 @@ impl OngoingCodegen {
     pub(crate) fn join(
         self,
         sess: &Session,
+        outputs: &OutputFilenames,
         backend_config: &BackendConfig,
     ) -> (CodegenResults, FxIndexMap<WorkProductId, WorkProduct>) {
         let mut work_products = FxIndexMap::default();
@@ -110,19 +115,185 @@ impl OngoingCodegen {
 
         sess.dcx().abort_if_errors();
 
-        (
-            CodegenResults {
-                modules,
-                allocator_module: self.allocator_module,
-                metadata_module: self.metadata_module,
-                metadata: self.metadata,
-                crate_info: self.crate_info,
-            },
-            work_products,
-        )
+        let codegen_results = CodegenResults {
+            modules,
+            allocator_module: self.allocator_module,
+            metadata_module: self.metadata_module,
+            metadata: self.metadata,
+            crate_info: self.crate_info,
+        };
+
+        produce_final_output_artifacts(sess, &codegen_results, outputs);
+
+        (codegen_results, work_products)
     }
 }
 
+// Adapted from https://github.com/rust-lang/rust/blob/73476d49904751f8d90ce904e16dfbc278083d2c/compiler/rustc_codegen_ssa/src/back/write.rs#L547C1-L706C2
+fn produce_final_output_artifacts(
+    sess: &Session,
+    codegen_results: &CodegenResults,
+    crate_output: &OutputFilenames,
+) {
+    let user_wants_bitcode = false;
+    let mut user_wants_objects = false;
+
+    // Produce final compile outputs.
+    let copy_gracefully = |from: &Path, to: &OutFileName| match to {
+        OutFileName::Stdout => {
+            if let Err(e) = copy_to_stdout(from) {
+                sess.dcx().emit_err(ssa_errors::CopyPath::new(from, to.as_path(), e));
+            }
+        }
+        OutFileName::Real(path) => {
+            if let Err(e) = fs::copy(from, path) {
+                sess.dcx().emit_err(ssa_errors::CopyPath::new(from, path, e));
+            }
+        }
+    };
+
+    let copy_if_one_unit = |output_type: OutputType, keep_numbered: bool| {
+        if codegen_results.modules.len() == 1 {
+            // 1) Only one codegen unit. In this case it's no difficulty
+            //    to copy `foo.0.x` to `foo.x`.
+            let module_name = Some(&codegen_results.modules[0].name[..]);
+            let path = crate_output.temp_path(output_type, module_name);
+            let output = crate_output.path(output_type);
+            if !output_type.is_text_output() && output.is_tty() {
+                sess.dcx()
+                    .emit_err(ssa_errors::BinaryOutputToTty { shorthand: output_type.shorthand() });
+            } else {
+                copy_gracefully(&path, &output);
+            }
+            if !sess.opts.cg.save_temps && !keep_numbered {
+                // The user just wants `foo.x`, not `foo.#module-name#.x`.
+                ensure_removed(sess.dcx(), &path);
+            }
+        } else {
+            let extension = crate_output
+                .temp_path(output_type, None)
+                .extension()
+                .unwrap()
+                .to_str()
+                .unwrap()
+                .to_owned();
+
+            if crate_output.outputs.contains_explicit_name(&output_type) {
+                // 2) Multiple codegen units, with `--emit foo=some_name`. We have
+                //    no good solution for this case, so warn the user.
+                sess.dcx().emit_warn(ssa_errors::IgnoringEmitPath { extension });
+            } else if crate_output.single_output_file.is_some() {
+                // 3) Multiple codegen units, with `-o some_name`. We have
+                //    no good solution for this case, so warn the user.
+                sess.dcx().emit_warn(ssa_errors::IgnoringOutput { extension });
+            } else {
+                // 4) Multiple codegen units, but no explicit name. We
+                //    just leave the `foo.0.x` files in place.
+                // (We don't have to do any work in this case.)
+            }
+        }
+    };
+
+    // Flag to indicate whether the user explicitly requested bitcode.
+    // Otherwise, we produced it only as a temporary output, and will need
+    // to get rid of it.
+    for output_type in crate_output.outputs.keys() {
+        match *output_type {
+            OutputType::Bitcode => {
+                // Cranelift doesn't have bitcode
+                // user_wants_bitcode = true;
+                // // Copy to .bc, but always keep the .0.bc. There is a later
+                // // check to figure out if we should delete .0.bc files, or keep
+                // // them for making an rlib.
+                // copy_if_one_unit(OutputType::Bitcode, true);
+            }
+            OutputType::LlvmAssembly => {
+                // Cranelift IR text already emitted during codegen
+                // copy_if_one_unit(OutputType::LlvmAssembly, false);
+            }
+            OutputType::Assembly => {
+                // Currently no support for emitting raw assembly files
+                // copy_if_one_unit(OutputType::Assembly, false);
+            }
+            OutputType::Object => {
+                user_wants_objects = true;
+                copy_if_one_unit(OutputType::Object, true);
+            }
+            OutputType::Mir | OutputType::Metadata | OutputType::Exe | OutputType::DepInfo => {}
+        }
+    }
+
+    // Clean up unwanted temporary files.
+
+    // We create the following files by default:
+    //  - #crate#.#module-name#.bc
+    //  - #crate#.#module-name#.o
+    //  - #crate#.crate.metadata.bc
+    //  - #crate#.crate.metadata.o
+    //  - #crate#.o (linked from crate.##.o)
+    //  - #crate#.bc (copied from crate.##.bc)
+    // We may create additional files if requested by the user (through
+    // `-C save-temps` or `--emit=` flags).
+
+    if !sess.opts.cg.save_temps {
+        // Remove the temporary .#module-name#.o objects. If the user didn't
+        // explicitly request bitcode (with --emit=bc), and the bitcode is not
+        // needed for building an rlib, then we must remove .#module-name#.bc as
+        // well.
+
+        // Specific rules for keeping .#module-name#.bc:
+        //  - If the user requested bitcode (`user_wants_bitcode`), and
+        //    codegen_units > 1, then keep it.
+        //  - If the user requested bitcode but codegen_units == 1, then we
+        //    can toss .#module-name#.bc because we copied it to .bc earlier.
+        //  - If we're not building an rlib and the user didn't request
+        //    bitcode, then delete .#module-name#.bc.
+        // If you change how this works, also update back::link::link_rlib,
+        // where .#module-name#.bc files are (maybe) deleted after making an
+        // rlib.
+        let needs_crate_object = crate_output.outputs.contains_key(&OutputType::Exe);
+
+        let keep_numbered_bitcode = user_wants_bitcode && sess.codegen_units().as_usize() > 1;
+
+        let keep_numbered_objects =
+            needs_crate_object || (user_wants_objects && sess.codegen_units().as_usize() > 1);
+
+        for module in codegen_results.modules.iter() {
+            if let Some(ref path) = module.object {
+                if !keep_numbered_objects {
+                    ensure_removed(sess.dcx(), path);
+                }
+            }
+
+            if let Some(ref path) = module.dwarf_object {
+                if !keep_numbered_objects {
+                    ensure_removed(sess.dcx(), path);
+                }
+            }
+
+            if let Some(ref path) = module.bytecode {
+                if !keep_numbered_bitcode {
+                    ensure_removed(sess.dcx(), path);
+                }
+            }
+        }
+
+        if !user_wants_bitcode {
+            if let Some(ref allocator_module) = codegen_results.allocator_module {
+                if let Some(ref path) = allocator_module.bytecode {
+                    ensure_removed(sess.dcx(), path);
+                }
+            }
+        }
+    }
+
+    // We leave the following files around by default:
+    //  - #crate#.o
+    //  - #crate#.crate.metadata.o
+    //  - #crate#.bc
+    // These are used in linking steps and will be cleaned up afterward.
+}
+
 fn make_module(sess: &Session, backend_config: &BackendConfig, name: String) -> ObjectModule {
     let isa = crate::build_isa(sess, backend_config);
 
@@ -290,6 +461,7 @@ fn module_codegen(
                 tcx.sess.opts.debuginfo != DebugInfo::None,
                 cgu_name,
             );
+            let mut type_dbg = TypeDebugContext::default();
             super::predefine_mono_items(tcx, &mut module, &mono_items);
             let mut codegened_functions = vec![];
             for (mono_item, _) in mono_items {
@@ -298,6 +470,7 @@ fn module_codegen(
                         let codegened_function = crate::base::codegen_fn(
                             tcx,
                             &mut cx,
+                            &mut type_dbg,
                             Function::new(),
                             &mut module,
                             inst,
@@ -305,7 +478,10 @@ fn module_codegen(
                         codegened_functions.push(codegened_function);
                     }
                     MonoItem::Static(def_id) => {
-                        crate::constant::codegen_static(tcx, &mut module, def_id)
+                        let data_id = crate::constant::codegen_static(tcx, &mut module, def_id);
+                        if let Some(debug_context) = &mut cx.debug_context {
+                            debug_context.define_static(tcx, &mut type_dbg, def_id, data_id);
+                        }
                     }
                     MonoItem::GlobalAsm(item_id) => {
                         crate::global_asm::codegen_global_asm_item(
diff --git a/src/driver/jit.rs b/src/driver/jit.rs
index 6b2b946db02..6dbc3f19127 100644
--- a/src/driver/jit.rs
+++ b/src/driver/jit.rs
@@ -12,6 +12,7 @@ use rustc_middle::mir::mono::MonoItem;
 use rustc_session::Session;
 use rustc_span::Symbol;
 
+use crate::debuginfo::TypeDebugContext;
 use crate::{prelude::*, BackendConfig};
 use crate::{CodegenCx, CodegenMode};
 
@@ -229,7 +230,14 @@ pub(crate) fn codegen_and_compile_fn<'tcx>(
             crate::PrintOnPanic(|| format!("{:?} {}", instance, tcx.symbol_name(instance).name));
 
         let cached_func = std::mem::replace(&mut cached_context.func, Function::new());
-        let codegened_func = crate::base::codegen_fn(tcx, cx, cached_func, module, instance);
+        let codegened_func = crate::base::codegen_fn(
+            tcx,
+            cx,
+            &mut TypeDebugContext::default(),
+            cached_func,
+            module,
+            instance,
+        );
 
         crate::base::compile_fn(cx, cached_context, module, codegened_func);
     });
diff --git a/src/global_asm.rs b/src/global_asm.rs
index 44650898de8..5a0cd3990f2 100644
--- a/src/global_asm.rs
+++ b/src/global_asm.rs
@@ -8,6 +8,7 @@ use std::sync::Arc;
 
 use rustc_ast::{InlineAsmOptions, InlineAsmTemplatePiece};
 use rustc_hir::{InlineAsmOperand, ItemId};
+use rustc_middle::mir::interpret::ErrorHandled;
 use rustc_session::config::{OutputFilenames, OutputType};
 use rustc_target::asm::InlineAsmArch;
 
@@ -32,18 +33,27 @@ pub(crate) fn codegen_global_asm_item(tcx: TyCtxt<'_>, global_asm: &mut String,
                 InlineAsmTemplatePiece::Placeholder { operand_idx, modifier: _, span: op_sp } => {
                     match asm.operands[operand_idx].0 {
                         InlineAsmOperand::Const { ref anon_const } => {
-                            let const_value =
-                                tcx.const_eval_poly(anon_const.def_id.to_def_id()).unwrap_or_else(
-                                    |_| span_bug!(op_sp, "asm const cannot be resolved"),
-                                );
-                            let ty = tcx.typeck_body(anon_const.body).node_type(anon_const.hir_id);
-                            let string = rustc_codegen_ssa::common::asm_const_to_str(
-                                tcx,
-                                op_sp,
-                                const_value,
-                                RevealAllLayoutCx(tcx).layout_of(ty),
-                            );
-                            global_asm.push_str(&string);
+                            match tcx.const_eval_poly(anon_const.def_id.to_def_id()) {
+                                Ok(const_value) => {
+                                    let ty = tcx
+                                        .typeck_body(anon_const.body)
+                                        .node_type(anon_const.hir_id);
+                                    let string = rustc_codegen_ssa::common::asm_const_to_str(
+                                        tcx,
+                                        op_sp,
+                                        const_value,
+                                        RevealAllLayoutCx(tcx).layout_of(ty),
+                                    );
+                                    global_asm.push_str(&string);
+                                }
+                                Err(ErrorHandled::Reported { .. }) => {
+                                    // An error has already been reported and compilation is
+                                    // guaranteed to fail if execution hits this path.
+                                }
+                                Err(ErrorHandled::TooGeneric(_)) => {
+                                    span_bug!(op_sp, "asm const cannot be resolved; too generic");
+                                }
+                            }
                         }
                         InlineAsmOperand::SymFn { anon_const } => {
                             if cfg!(not(feature = "inline_asm_sym")) {
diff --git a/src/intrinsics/mod.rs b/src/intrinsics/mod.rs
index 25694af78f1..0b213ff8269 100644
--- a/src/intrinsics/mod.rs
+++ b/src/intrinsics/mod.rs
@@ -341,6 +341,8 @@ fn codegen_float_intrinsic_call<'tcx>(
         sym::roundf64 => ("round", 1, fx.tcx.types.f64, types::F64),
         sym::roundevenf32 => ("roundevenf", 1, fx.tcx.types.f32, types::F32),
         sym::roundevenf64 => ("roundeven", 1, fx.tcx.types.f64, types::F64),
+        sym::nearbyintf32 => ("nearbyintf", 1, fx.tcx.types.f32, types::F32),
+        sym::nearbyintf64 => ("nearbyint", 1, fx.tcx.types.f64, types::F64),
         sym::sinf32 => ("sinf", 1, fx.tcx.types.f32, types::F32),
         sym::sinf64 => ("sin", 1, fx.tcx.types.f64, types::F64),
         sym::cosf32 => ("cosf", 1, fx.tcx.types.f32, types::F32),
@@ -392,6 +394,8 @@ fn codegen_float_intrinsic_call<'tcx>(
         | sym::ceilf64
         | sym::truncf32
         | sym::truncf64
+        | sym::nearbyintf32
+        | sym::nearbyintf64
         | sym::sqrtf32
         | sym::sqrtf64 => {
             let val = match intrinsic {
@@ -399,6 +403,7 @@ fn codegen_float_intrinsic_call<'tcx>(
                 sym::floorf32 | sym::floorf64 => fx.bcx.ins().floor(args[0]),
                 sym::ceilf32 | sym::ceilf64 => fx.bcx.ins().ceil(args[0]),
                 sym::truncf32 | sym::truncf64 => fx.bcx.ins().trunc(args[0]),
+                sym::nearbyintf32 | sym::nearbyintf64 => fx.bcx.ins().nearest(args[0]),
                 sym::sqrtf32 | sym::sqrtf64 => fx.bcx.ins().sqrt(args[0]),
                 _ => unreachable!(),
             };
diff --git a/src/lib.rs b/src/lib.rs
index a59a39074f8..d0ab64a5584 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -148,7 +148,7 @@ impl CodegenCx {
         let unwind_context =
             UnwindContext::new(isa, matches!(backend_config.codegen_mode, CodegenMode::Aot));
         let debug_context = if debug_info && !tcx.sess.target.options.is_like_windows {
-            Some(DebugContext::new(tcx, isa))
+            Some(DebugContext::new(tcx, isa, cgu_name.as_str()))
         } else {
             None
         };
@@ -233,12 +233,13 @@ impl CodegenBackend for CraneliftCodegenBackend {
         &self,
         ongoing_codegen: Box<dyn Any>,
         sess: &Session,
-        _outputs: &OutputFilenames,
+        outputs: &OutputFilenames,
     ) -> (CodegenResults, FxIndexMap<WorkProductId, WorkProduct>) {
-        ongoing_codegen
-            .downcast::<driver::aot::OngoingCodegen>()
-            .unwrap()
-            .join(sess, self.config.borrow().as_ref().unwrap())
+        ongoing_codegen.downcast::<driver::aot::OngoingCodegen>().unwrap().join(
+            sess,
+            outputs,
+            self.config.borrow().as_ref().unwrap(),
+        )
     }
 
     fn link(
diff --git a/src/vtable.rs b/src/vtable.rs
index d2254d4c15e..86ebf37d105 100644
--- a/src/vtable.rs
+++ b/src/vtable.rs
@@ -2,7 +2,7 @@
 //!
 //! See `rustc_codegen_ssa/src/meth.rs` for reference.
 
-use crate::constant::data_id_for_alloc_id;
+use crate::constant::data_id_for_vtable;
 use crate::prelude::*;
 
 pub(crate) fn vtable_memflags() -> MemFlags {
@@ -92,12 +92,10 @@ pub(crate) fn get_vtable<'tcx>(
     ty: Ty<'tcx>,
     trait_ref: Option<ty::PolyExistentialTraitRef<'tcx>>,
 ) -> Value {
-    let alloc_id = fx.tcx.vtable_allocation((ty, trait_ref));
-    let data_id =
-        data_id_for_alloc_id(&mut fx.constants_cx, &mut *fx.module, alloc_id, Mutability::Not);
+    let data_id = data_id_for_vtable(fx.tcx, &mut fx.constants_cx, fx.module, ty, trait_ref);
     let local_data_id = fx.module.declare_data_in_func(data_id, fx.bcx.func);
     if fx.clif_comments.enabled() {
-        fx.add_comment(local_data_id, format!("vtable: {:?}", alloc_id));
+        fx.add_comment(local_data_id, "vtable");
     }
     fx.bcx.ins().global_value(fx.pointer_type, local_data_id)
 }

From 5de668acb07218424cbfe79f32f4961ca773570d Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Tue, 19 Mar 2024 13:51:22 +0100
Subject: [PATCH 06/23] Replace `RemapFileNameExt::for_codegen` with explicit
 calls

---
 src/debuginfo/mod.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/debuginfo/mod.rs b/src/debuginfo/mod.rs
index 1bb0e590513..c9f59ae9f29 100644
--- a/src/debuginfo/mod.rs
+++ b/src/debuginfo/mod.rs
@@ -84,7 +84,9 @@ impl DebugContext {
 
         let mut dwarf = DwarfUnit::new(encoding);
 
-        let should_remap_filepaths = tcx.sess.should_prefer_remapped_for_codegen();
+        use rustc_session::config::RemapPathScopeComponents;
+        let should_remap_filepaths =
+            tcx.sess.should_prefer_remapped(RemapPathScopeComponents::DEBUGINFO);
 
         let producer = producer(tcx.sess);
         let comp_dir = tcx

From d6a817a7d9b8950cf73914d17cfc1c8e35dc2c7f Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Tue, 19 Mar 2024 13:51:22 +0100
Subject: [PATCH 07/23] Make local_crate_source_file return a RealFileName

so it can be remapped (or not) by callers
---
 src/debuginfo/mod.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/debuginfo/mod.rs b/src/debuginfo/mod.rs
index c9f59ae9f29..222dc56a2b1 100644
--- a/src/debuginfo/mod.rs
+++ b/src/debuginfo/mod.rs
@@ -99,9 +99,16 @@ impl DebugContext {
                 FileNameDisplayPreference::Local
             })
             .into_owned();
+
         let (name, file_info) = match tcx.sess.local_crate_source_file() {
             Some(path) => {
-                let name = path.to_string_lossy().into_owned();
+                let name = path
+                    .to_string_lossy(if should_remap_filepaths {
+                        FileNameDisplayPreference::Remapped
+                    } else {
+                        FileNameDisplayPreference::Local
+                    })
+                    .into_owned();
                 (name, None)
             }
             None => (tcx.crate_name(LOCAL_CRATE).to_string(), None),

From 6a2b2b43bd65ee7e3def7e10289bb98ca415dc03 Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Thu, 21 Mar 2024 21:13:06 +0100
Subject: [PATCH 08/23] Introduce `FileNameMapping::to_real_filename` and use
 it everywhere

---
 src/debuginfo/mod.rs | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/src/debuginfo/mod.rs b/src/debuginfo/mod.rs
index 222dc56a2b1..b661fa185b8 100644
--- a/src/debuginfo/mod.rs
+++ b/src/debuginfo/mod.rs
@@ -85,6 +85,8 @@ impl DebugContext {
         let mut dwarf = DwarfUnit::new(encoding);
 
         use rustc_session::config::RemapPathScopeComponents;
+        use rustc_session::RemapFileNameExt;
+
         let should_remap_filepaths =
             tcx.sess.should_prefer_remapped(RemapPathScopeComponents::DEBUGINFO);
 
@@ -93,22 +95,16 @@ impl DebugContext {
             .sess
             .opts
             .working_dir
-            .to_string_lossy(if should_remap_filepaths {
-                FileNameDisplayPreference::Remapped
-            } else {
-                FileNameDisplayPreference::Local
-            })
-            .into_owned();
+            .for_scope(tcx.sess, RemapPathScopeComponents::DEBUGINFO)
+            .to_string_lossy()
+            .to_string();
 
         let (name, file_info) = match tcx.sess.local_crate_source_file() {
             Some(path) => {
                 let name = path
-                    .to_string_lossy(if should_remap_filepaths {
-                        FileNameDisplayPreference::Remapped
-                    } else {
-                        FileNameDisplayPreference::Local
-                    })
-                    .into_owned();
+                    .for_scope(tcx.sess, RemapPathScopeComponents::DEBUGINFO)
+                    .to_string_lossy()
+                    .to_string();
                 (name, None)
             }
             None => (tcx.crate_name(LOCAL_CRATE).to_string(), None),

From 4d7ded634aab19de52b382794010563574f1507d Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Fri, 22 Mar 2024 15:27:17 +0100
Subject: [PATCH 09/23] Replace Session should_remap_filepaths with
 filename_display_preference

---
 src/debuginfo/line_info.rs | 15 ++-------------
 src/debuginfo/mod.rs       | 23 +++++++----------------
 2 files changed, 9 insertions(+), 29 deletions(-)

diff --git a/src/debuginfo/line_info.rs b/src/debuginfo/line_info.rs
index 380eba437c2..32b9c824ded 100644
--- a/src/debuginfo/line_info.rs
+++ b/src/debuginfo/line_info.rs
@@ -89,11 +89,7 @@ impl DebugContext {
             match &source_file.name {
                 FileName::Real(path) => {
                     let (dir_path, file_name) =
-                        split_path_dir_and_file(if self.should_remap_filepaths {
-                            path.remapped_path_if_available()
-                        } else {
-                            path.local_path_if_available()
-                        });
+                        split_path_dir_and_file(path.to_path(self.filename_display_preference));
                     let dir_name = osstr_as_utf8_bytes(dir_path.as_os_str());
                     let file_name = osstr_as_utf8_bytes(file_name);
 
@@ -115,14 +111,7 @@ impl DebugContext {
                 filename => {
                     let dir_id = line_program.default_directory();
                     let dummy_file_name = LineString::new(
-                        filename
-                            .display(if self.should_remap_filepaths {
-                                FileNameDisplayPreference::Remapped
-                            } else {
-                                FileNameDisplayPreference::Local
-                            })
-                            .to_string()
-                            .into_bytes(),
+                        filename.display(self.filename_display_preference).to_string().into_bytes(),
                         line_program.encoding(),
                         line_strings,
                     );
diff --git a/src/debuginfo/mod.rs b/src/debuginfo/mod.rs
index b661fa185b8..5d943b5d996 100644
--- a/src/debuginfo/mod.rs
+++ b/src/debuginfo/mod.rs
@@ -42,7 +42,7 @@ pub(crate) struct DebugContext {
     namespace_map: DefIdMap<UnitEntryId>,
     array_size_type: UnitEntryId,
 
-    should_remap_filepaths: bool,
+    filename_display_preference: FileNameDisplayPreference,
 }
 
 pub(crate) struct FunctionDebugContext {
@@ -85,26 +85,17 @@ impl DebugContext {
         let mut dwarf = DwarfUnit::new(encoding);
 
         use rustc_session::config::RemapPathScopeComponents;
-        use rustc_session::RemapFileNameExt;
 
-        let should_remap_filepaths =
-            tcx.sess.should_prefer_remapped(RemapPathScopeComponents::DEBUGINFO);
+        let filename_display_preference =
+            tcx.sess.filename_display_preference(RemapPathScopeComponents::DEBUGINFO);
 
         let producer = producer(tcx.sess);
-        let comp_dir = tcx
-            .sess
-            .opts
-            .working_dir
-            .for_scope(tcx.sess, RemapPathScopeComponents::DEBUGINFO)
-            .to_string_lossy()
-            .to_string();
+        let comp_dir =
+            tcx.sess.opts.working_dir.to_string_lossy(filename_display_preference).to_string();
 
         let (name, file_info) = match tcx.sess.local_crate_source_file() {
             Some(path) => {
-                let name = path
-                    .for_scope(tcx.sess, RemapPathScopeComponents::DEBUGINFO)
-                    .to_string_lossy()
-                    .to_string();
+                let name = path.to_string_lossy(filename_display_preference).to_string();
                 (name, None)
             }
             None => (tcx.crate_name(LOCAL_CRATE).to_string(), None),
@@ -161,7 +152,7 @@ impl DebugContext {
             stack_pointer_register,
             namespace_map: DefIdMap::default(),
             array_size_type,
-            should_remap_filepaths,
+            filename_display_preference,
         }
     }
 

From e7829154b6dbfd0d5881fd6ce09a61108047e159 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Sat, 30 Mar 2024 11:02:18 +0000
Subject: [PATCH 10/23] Rustup to rustc 1.79.0-nightly (faae5f1ff 2024-03-29)

---
 rust-toolchain | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust-toolchain b/rust-toolchain
index 612fc61ec27..3a9740fd7ab 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2024-03-28"
+channel = "nightly-2024-03-30"
 components = ["rust-src", "rustc-dev", "llvm-tools"]

From 7cdec718681936ff4a41ab8de712bfb415636983 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Sun, 31 Mar 2024 09:01:37 +0000
Subject: [PATCH 11/23] Move the rustc testing section out of the readme

To make the readme a bit easier to read.
---
 Readme.md             | 22 +---------------------
 docs/rustc_testing.md | 23 +++++++++++++++++++++++
 2 files changed, 24 insertions(+), 21 deletions(-)
 create mode 100644 docs/rustc_testing.md

diff --git a/Readme.md b/Readme.md
index a297b22326f..00ea15cb38c 100644
--- a/Readme.md
+++ b/Readme.md
@@ -101,27 +101,7 @@ For additional ways to use rustc_codegen_cranelift like the JIT mode see [usage.
 
 ## Building and testing with changes in rustc code
 
-This is useful when changing code in `rustc_codegen_cranelift` as part of changing [main Rust repository](https://github.com/rust-lang/rust/).
-This can happen, for example, when you are implementing a new compiler intrinsic.
-
-Instruction below uses `$RustCheckoutDir` as substitute for any folder where you cloned Rust repository.
-
-You need to do this steps to successfully compile and use the cranelift backend with your changes in rustc code:
-
-1. `cd $RustCheckoutDir`
-2. Run `python x.py setup` and choose option for compiler (`b`).
-3. Build compiler and necessary tools: `python x.py build --stage=2 compiler library/std src/tools/rustdoc src/tools/rustfmt`
-   * (Optional) You can also build cargo by adding `src/tools/cargo` to previous command.
-4. Copy cargo from a nightly toolchain: `cp $(rustup +nightly which cargo) ./build/host/stage2/bin/cargo`. Note that you would need to do this every time you rebuilt `rust` repository.
-5. Link your new `rustc` to toolchain: `rustup toolchain link stage2 ./build/host/stage2/`.
-6. (Windows only) compile the build system: `rustc +stage2 -O build_system/main.rs -o y.exe`.
-7. You need to prefix every `./y.sh` (or `y` if you built `build_system/main.rs` as `y`) command by `rustup run stage2` to make cg_clif use your local changes in rustc.
-  * `rustup run stage2 ./y.sh prepare`
-  * `rustup run stage2 ./y.sh build`
-  * (Optional) run tests: `rustup run stage2 ./y.sh test`
-8. Now you can use your cg_clif build to compile other Rust programs, e.g. you can open any Rust crate and run commands like `$RustCheckoutDir/compiler/rustc_codegen_cranelift/dist/cargo-clif build --release`.
-
-You can also set `rust-analyzer.rustc.source` to your rust workspace to get rust-analyzer to understand your changes.
+See [rustc_testing.md](docs/rustc_testing.md).
 
 ## Not yet supported
 
diff --git a/docs/rustc_testing.md b/docs/rustc_testing.md
new file mode 100644
index 00000000000..88c55557231
--- /dev/null
+++ b/docs/rustc_testing.md
@@ -0,0 +1,23 @@
+# Building and testing with changes in rustc code
+
+This is useful when changing code in `rustc_codegen_cranelift` as part of changing [main Rust repository](https://github.com/rust-lang/rust/).
+This can happen, for example, when you are implementing a new compiler intrinsic.
+
+Instruction below uses `$RustCheckoutDir` as substitute for any folder where you cloned Rust repository.
+
+You need to do this steps to successfully compile and use the cranelift backend with your changes in rustc code:
+
+1. `cd $RustCheckoutDir`
+2. Run `python x.py setup` and choose option for compiler (`b`).
+3. Build compiler and necessary tools: `python x.py build --stage=2 compiler library/std src/tools/rustdoc src/tools/rustfmt`
+   * (Optional) You can also build cargo by adding `src/tools/cargo` to previous command.
+4. Copy cargo from a nightly toolchain: `cp $(rustup +nightly which cargo) ./build/host/stage2/bin/cargo`. Note that you would need to do this every time you rebuilt `rust` repository.
+5. Link your new `rustc` to toolchain: `rustup toolchain link stage2 ./build/host/stage2/`.
+6. (Windows only) compile the build system: `rustc +stage2 -O build_system/main.rs -o y.exe`.
+7. You need to prefix every `./y.sh` (or `y` if you built `build_system/main.rs` as `y`) command by `rustup run stage2` to make cg_clif use your local changes in rustc.
+  * `rustup run stage2 ./y.sh prepare`
+  * `rustup run stage2 ./y.sh build`
+  * (Optional) run tests: `rustup run stage2 ./y.sh test`
+8. Now you can use your cg_clif build to compile other Rust programs, e.g. you can open any Rust crate and run commands like `$RustCheckoutDir/compiler/rustc_codegen_cranelift/dist/cargo-clif build --release`.
+
+You can also set `rust-analyzer.rustc.source` to your rust workspace to get rust-analyzer to understand your changes.

From d9f29fa018b7534e14f7452f41667dec3d67e1b7 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Sun, 31 Mar 2024 09:09:58 +0000
Subject: [PATCH 12/23] Rustfmt all scripts

---
 .github/workflows/main.yml | 1 +
 scripts/filter_profile.rs  | 9 +++------
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 526871d0c05..1fef6bdb945 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -23,6 +23,7 @@ jobs:
         cargo fmt --check
         rustfmt --check build_system/main.rs
         rustfmt --check example/*
+        rustfmt --check scripts/*.rs
 
 
   test:
diff --git a/scripts/filter_profile.rs b/scripts/filter_profile.rs
index 03912b18ea5..0252d5b3340 100755
--- a/scripts/filter_profile.rs
+++ b/scripts/filter_profile.rs
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-#![forbid(unsafe_code)]/* This line is ignored by bash
+#![rustfmt::skip]/* This line is ignored by bash
 # This block is ignored by rustc
 pushd $(dirname "$0")/../
 RUSTC="$(pwd)/dist/rustc-clif"
@@ -26,11 +26,8 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     }
     let profile = std::fs::read_to_string(profile_name)
         .map_err(|err| format!("Failed to read profile {}", err))?;
-    let mut output = std::fs::OpenOptions::new()
-        .create(true)
-        .write(true)
-        .truncate(true)
-        .open(output_name)?;
+    let mut output =
+        std::fs::OpenOptions::new().create(true).write(true).truncate(true).open(output_name)?;
 
     for line in profile.lines() {
         let mut stack = &line[..line.rfind(" ").unwrap()];

From 4e4de3f5b771cac99593f2421a122a7bc6e06ffb Mon Sep 17 00:00:00 2001
From: Taiki Endo <te316e89@gmail.com>
Date: Wed, 3 Apr 2024 21:30:19 +0900
Subject: [PATCH 13/23] Fix ICE on unchecked shift

---
 src/num.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/num.rs b/src/num.rs
index 8992f40fb90..fd665d5932f 100644
--- a/src/num.rs
+++ b/src/num.rs
@@ -110,7 +110,7 @@ pub(crate) fn codegen_int_binop<'tcx>(
     in_lhs: CValue<'tcx>,
     in_rhs: CValue<'tcx>,
 ) -> CValue<'tcx> {
-    if bin_op != BinOp::Shl && bin_op != BinOp::Shr {
+    if !matches!(bin_op, BinOp::Shl | BinOp::ShlUnchecked | BinOp::Shr | BinOp::ShrUnchecked) {
         assert_eq!(
             in_lhs.layout().ty,
             in_rhs.layout().ty,

From b0710dc5f5be62a2f5151642a71edb54b6ee8728 Mon Sep 17 00:00:00 2001
From: joboet <jonasboettiger@icloud.com>
Date: Wed, 3 Apr 2024 15:17:00 +0200
Subject: [PATCH 14/23] rename `expose_addr` to `expose_provenance`

---
 src/base.rs            | 2 +-
 src/intrinsics/simd.rs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/base.rs b/src/base.rs
index 249c16898ce..0aa2bae8f78 100644
--- a/src/base.rs
+++ b/src/base.rs
@@ -649,7 +649,7 @@ fn codegen_stmt<'tcx>(
                     | CastKind::IntToFloat
                     | CastKind::FnPtrToPtr
                     | CastKind::PtrToPtr
-                    | CastKind::PointerExposeAddress
+                    | CastKind::PointerExposeProvenance
                     | CastKind::PointerWithExposedProvenance,
                     ref operand,
                     to_ty,
diff --git a/src/intrinsics/simd.rs b/src/intrinsics/simd.rs
index 783ad5d1dd1..67f9d831062 100644
--- a/src/intrinsics/simd.rs
+++ b/src/intrinsics/simd.rs
@@ -965,7 +965,7 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
             });
         }
 
-        sym::simd_expose_addr | sym::simd_with_exposed_provenance | sym::simd_cast_ptr => {
+        sym::simd_expose_provenance | sym::simd_with_exposed_provenance | sym::simd_cast_ptr => {
             intrinsic_args!(fx, args => (arg); intrinsic);
             ret.write_cvalue_transmute(fx, arg);
         }

From 46fc398706da87768f1f8ea1cdb9af2e17512a68 Mon Sep 17 00:00:00 2001
From: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
Date: Wed, 3 Apr 2024 17:49:59 +0300
Subject: [PATCH 15/23] rustc_index: Add a `ZERO` constant to index types

It is commonly used.
---
 src/intrinsics/llvm_x86.rs | 2 +-
 src/vtable.rs              | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/intrinsics/llvm_x86.rs b/src/intrinsics/llvm_x86.rs
index 1615dc5de69..8df83c706a1 100644
--- a/src/intrinsics/llvm_x86.rs
+++ b/src/intrinsics/llvm_x86.rs
@@ -1393,7 +1393,7 @@ fn llvm_add_sub<'tcx>(
 
     // c + carry -> c + first intermediate carry or borrow respectively
     let int0 = crate::num::codegen_checked_int_binop(fx, bin_op, a, b);
-    let c = int0.value_field(fx, FieldIdx::new(0));
+    let c = int0.value_field(fx, FieldIdx::ZERO);
     let cb0 = int0.value_field(fx, FieldIdx::new(1)).load_scalar(fx);
 
     // c + carry -> c + second intermediate carry or borrow respectively
diff --git a/src/vtable.rs b/src/vtable.rs
index 86ebf37d105..04e24320f91 100644
--- a/src/vtable.rs
+++ b/src/vtable.rs
@@ -61,7 +61,7 @@ pub(crate) fn get_ptr_and_method_ref<'tcx>(
             if ty.is_dyn_star() {
                 let inner_layout = fx.layout_of(arg.layout().ty.builtin_deref(true).unwrap().ty);
                 let dyn_star = CPlace::for_ptr(Pointer::new(arg.load_scalar(fx)), inner_layout);
-                let ptr = dyn_star.place_field(fx, FieldIdx::new(0)).to_ptr();
+                let ptr = dyn_star.place_field(fx, FieldIdx::ZERO).to_ptr();
                 let vtable =
                     dyn_star.place_field(fx, FieldIdx::new(1)).to_cvalue(fx).load_scalar(fx);
                 break 'block (ptr, vtable);

From 737421a25b9a46aca017ffef1b1d648e278d1d87 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Fri, 5 Apr 2024 12:15:41 +0000
Subject: [PATCH 16/23] Rustup to rustc 1.79.0-nightly (385fa9d84 2024-04-04)

---
 build_system/prepare.rs |  1 -
 build_system/tests.rs   | 17 ++++++++---------
 rust-toolchain          |  2 +-
 3 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/build_system/prepare.rs b/build_system/prepare.rs
index 3677d0a7d36..5525a5f63e9 100644
--- a/build_system/prepare.rs
+++ b/build_system/prepare.rs
@@ -15,7 +15,6 @@ pub(crate) fn prepare(dirs: &Dirs) {
     RelPath::DOWNLOAD.ensure_exists(dirs);
     crate::tests::RAND_REPO.fetch(dirs);
     crate::tests::REGEX_REPO.fetch(dirs);
-    crate::tests::PORTABLE_SIMD_REPO.fetch(dirs);
 }
 
 pub(crate) fn prepare_stdlib(dirs: &Dirs, rustc: &Path) {
diff --git a/build_system/tests.rs b/build_system/tests.rs
index 1c3e615c7ab..9efb6ed715c 100644
--- a/build_system/tests.rs
+++ b/build_system/tests.rs
@@ -130,16 +130,10 @@ pub(crate) static REGEX_REPO: GitRepo = GitRepo::github(
 
 pub(crate) static REGEX: CargoProject = CargoProject::new(&REGEX_REPO.source_dir(), "regex_target");
 
-pub(crate) static PORTABLE_SIMD_REPO: GitRepo = GitRepo::github(
-    "rust-lang",
-    "portable-simd",
-    "5794c837bc605c4cd9dbb884285976dfdb293cce",
-    "a64d8fdd0ed0d9c4",
-    "portable-simd",
-);
+pub(crate) static PORTABLE_SIMD_SRC: RelPath = RelPath::BUILD.join("coretests");
 
 pub(crate) static PORTABLE_SIMD: CargoProject =
-    CargoProject::new(&PORTABLE_SIMD_REPO.source_dir(), "portable-simd_target");
+    CargoProject::new(&PORTABLE_SIMD_SRC, "portable-simd_target");
 
 static LIBCORE_TESTS_SRC: RelPath = RelPath::BUILD.join("coretests");
 
@@ -221,7 +215,12 @@ const EXTENDED_SYSROOT_SUITE: &[TestCase] = &[
         }
     }),
     TestCase::custom("test.portable-simd", &|runner| {
-        PORTABLE_SIMD_REPO.patch(&runner.dirs);
+        apply_patches(
+            &runner.dirs,
+            "portable-simd",
+            &runner.stdlib_source.join("library/portable-simd"),
+            &PORTABLE_SIMD_SRC.to_path(&runner.dirs),
+        );
 
         PORTABLE_SIMD.clean(&runner.dirs);
 
diff --git a/rust-toolchain b/rust-toolchain
index 3a9740fd7ab..09e436b3eed 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2024-03-30"
+channel = "nightly-2024-04-05"
 components = ["rust-src", "rustc-dev", "llvm-tools"]

From 40d40fb2293734b6ac9c77e764bf0183819e4a95 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Tue, 2 Apr 2024 14:29:00 +0000
Subject: [PATCH 17/23] Fix warning in mini_core

---
 example/mini_core.rs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/example/mini_core.rs b/example/mini_core.rs
index 1cee5131907..85b0590809c 100644
--- a/example/mini_core.rs
+++ b/example/mini_core.rs
@@ -467,7 +467,6 @@ pub fn panic(_msg: &'static str) -> ! {
 
 macro_rules! panic_const {
     ($($lang:ident = $message:expr,)+) => {
-        #[cfg(not(bootstrap))]
         pub mod panic_const {
             use super::*;
 

From 91ffd74de41fa473bf8e7ac94b8159578ba3e94c Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Tue, 2 Apr 2024 15:05:06 +0000
Subject: [PATCH 18/23] Simplify GHA CI workflow

---
 .github/workflows/main.yml | 28 +++++++---------------------
 1 file changed, 7 insertions(+), 21 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1fef6bdb945..40be442a827 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -48,15 +48,19 @@ jobs:
           - os: ubuntu-latest
             env:
               TARGET_TRIPLE: x86_64-pc-windows-gnu
+            apt_deps: gcc-mingw-w64-x86-64 wine-stable
           - os: ubuntu-latest
             env:
               TARGET_TRIPLE: aarch64-unknown-linux-gnu
+            apt_deps: gcc-aarch64-linux-gnu qemu-user
           - os: ubuntu-latest
             env:
               TARGET_TRIPLE: s390x-unknown-linux-gnu
+            apt_deps: gcc-s390x-linux-gnu qemu-user
           - os: ubuntu-latest
             env:
               TARGET_TRIPLE: riscv64gc-unknown-linux-gnu
+            apt_deps: gcc-riscv64-linux-gnu qemu-user
           - os: windows-latest
             env:
               TARGET_TRIPLE: x86_64-pc-windows-msvc
@@ -81,29 +85,11 @@ jobs:
       if: matrix.os == 'windows-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
       run: rustup set default-host x86_64-pc-windows-gnu
 
-    - name: Install MinGW toolchain and wine
-      if: matrix.os == 'ubuntu-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
+    - name: Install toolchain and emulator
+      if: matrix.apt_deps != null
       run: |
         sudo apt-get update
-        sudo apt-get install -y gcc-mingw-w64-x86-64 wine-stable
-
-    - name: Install AArch64 toolchain and qemu
-      if: matrix.os == 'ubuntu-latest' && matrix.env.TARGET_TRIPLE == 'aarch64-unknown-linux-gnu'
-      run: |
-        sudo apt-get update
-        sudo apt-get install -y gcc-aarch64-linux-gnu qemu-user
-
-    - name: Install s390x toolchain and qemu
-      if: matrix.env.TARGET_TRIPLE == 's390x-unknown-linux-gnu'
-      run: |
-        sudo apt-get update
-        sudo apt-get install -y gcc-s390x-linux-gnu qemu-user
-
-    - name: Install riscv64gc toolchain and qemu
-      if: matrix.env.TARGET_TRIPLE == 'riscv64gc-unknown-linux-gnu'
-      run: |
-        sudo apt-get update
-        sudo apt-get install -y gcc-riscv64-linux-gnu qemu-user
+        sudo apt-get install -y ${{ matrix.apt_deps }}
 
     - name: Prepare dependencies
       run: ./y.sh prepare

From 65342df8cd9ed8ca5311edc69f445fdb7b60a191 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Tue, 2 Apr 2024 15:11:20 +0000
Subject: [PATCH 19/23] Dedup default shell specification for GHA

---
 .github/workflows/main.yml | 20 ++++----------------
 1 file changed, 4 insertions(+), 16 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 40be442a827..504add29349 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,6 +4,10 @@ on:
   - push
   - pull_request
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
   rustfmt:
     runs-on: ubuntu-latest
@@ -30,10 +34,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     timeout-minutes: 60
 
-    defaults:
-      run:
-        shell: bash
-
     strategy:
       fail-fast: false
       matrix:
@@ -129,10 +129,6 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 60
 
-    defaults:
-      run:
-        shell: bash
-
     steps:
     - uses: actions/checkout@v4
 
@@ -155,10 +151,6 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 60
 
-    defaults:
-      run:
-        shell: bash
-
     steps:
     - uses: actions/checkout@v4
 
@@ -190,10 +182,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     timeout-minutes: 60
 
-    defaults:
-      run:
-        shell: bash
-
     strategy:
       fail-fast: false
       matrix:

From 603b2800f7fa61947b35419f1a5a33e265792001 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Tue, 2 Apr 2024 15:17:56 +0000
Subject: [PATCH 20/23] Revoke all permissions from GHA workflows where
 possible

---
 .github/workflows/abi-cafe.yml | 2 ++
 .github/workflows/main.yml     | 2 ++
 .github/workflows/rustc.yml    | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/.github/workflows/abi-cafe.yml b/.github/workflows/abi-cafe.yml
index e6bf944f552..a745f2801cc 100644
--- a/.github/workflows/abi-cafe.yml
+++ b/.github/workflows/abi-cafe.yml
@@ -3,6 +3,8 @@ name: Abi-cafe
 on:
   - push
 
+permissions: {}
+
 jobs:
   abi_cafe:
     runs-on: ${{ matrix.os }}
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 504add29349..8488f437f85 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,6 +8,8 @@ defaults:
   run:
     shell: bash
 
+permissions: {}
+
 jobs:
   rustfmt:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/rustc.yml b/.github/workflows/rustc.yml
index 930d025b73e..75ea94ee797 100644
--- a/.github/workflows/rustc.yml
+++ b/.github/workflows/rustc.yml
@@ -3,6 +3,8 @@ name: Various rustc tests
 on:
   - push
 
+permissions: {}
+
 jobs:
   bootstrap_rustc:
     runs-on: ubuntu-latest

From f269cdd80582ec92972483641676e4a933b583a0 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Fri, 5 Apr 2024 13:56:21 +0000
Subject: [PATCH 21/23] Move disabling incr comp and denying warnings to the CI
 config

---
 .cirrus.yml                   |  3 +++
 .github/workflows/main.yml    |  8 ++++++++
 build_system/build_backend.rs |  6 +-----
 build_system/build_sysroot.rs |  4 +---
 build_system/main.rs          |  8 +++++---
 build_system/utils.rs         | 10 ----------
 6 files changed, 18 insertions(+), 21 deletions(-)

diff --git a/.cirrus.yml b/.cirrus.yml
index aa1a2bad2cf..97c2f45d31e 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -13,4 +13,7 @@ task:
     - ./y.sh prepare
   test_script:
     - . $HOME/.cargo/env
+    # Disabling incr comp reduces cache size and incr comp doesn't save as much
+    # on CI anyway.
+    - export CARGO_BUILD_INCREMENTAL=false
     - ./y.sh test
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8488f437f85..fee5a078396 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,6 +10,14 @@ defaults:
 
 permissions: {}
 
+env:
+  # Disabling incr comp reduces cache size and incr comp doesn't save as much
+  # on CI anyway.
+  CARGO_BUILD_INCREMENTAL: false
+  # Rust's CI denies warnings. Deny them here too to ensure subtree syncs don't
+  # fail because of warnings.
+  RUSTFLAGS: "-Dwarnings"
+
 jobs:
   rustfmt:
     runs-on: ubuntu-latest
diff --git a/build_system/build_backend.rs b/build_system/build_backend.rs
index d90111adf77..20f1bba2272 100644
--- a/build_system/build_backend.rs
+++ b/build_system/build_backend.rs
@@ -3,7 +3,7 @@ use std::path::PathBuf;
 use crate::path::{Dirs, RelPath};
 use crate::rustc_info::get_file_name;
 use crate::shared_utils::{rustflags_from_env, rustflags_to_cmd_env};
-use crate::utils::{is_ci, is_ci_opt, maybe_incremental, CargoProject, Compiler, LogGroup};
+use crate::utils::{is_ci, is_ci_opt, CargoProject, Compiler, LogGroup};
 
 pub(crate) static CG_CLIF: CargoProject = CargoProject::new(&RelPath::SOURCE, "cg_clif");
 
@@ -16,16 +16,12 @@ pub(crate) fn build_backend(
     let _group = LogGroup::guard("Build backend");
 
     let mut cmd = CG_CLIF.build(&bootstrap_host_compiler, dirs);
-    maybe_incremental(&mut cmd);
 
     let mut rustflags = rustflags_from_env("RUSTFLAGS");
 
     rustflags.push("-Zallow-features=rustc_private".to_owned());
 
     if is_ci() {
-        // Deny warnings on CI
-        rustflags.push("-Dwarnings".to_owned());
-
         if !is_ci_opt() {
             cmd.env("CARGO_PROFILE_RELEASE_DEBUG_ASSERTIONS", "true");
             cmd.env("CARGO_PROFILE_RELEASE_OVERFLOW_CHECKS", "true");
diff --git a/build_system/build_sysroot.rs b/build_system/build_sysroot.rs
index 1ed896c6bf0..10c3f9cfa2c 100644
--- a/build_system/build_sysroot.rs
+++ b/build_system/build_sysroot.rs
@@ -6,8 +6,7 @@ use std::process::Command;
 use crate::path::{Dirs, RelPath};
 use crate::rustc_info::get_file_name;
 use crate::utils::{
-    maybe_incremental, remove_dir_if_exists, spawn_and_wait, try_hard_link, CargoProject, Compiler,
-    LogGroup,
+    remove_dir_if_exists, spawn_and_wait, try_hard_link, CargoProject, Compiler, LogGroup,
 };
 use crate::{config, CodegenBackend, SysrootKind};
 
@@ -270,7 +269,6 @@ fn build_clif_sysroot_for_triple(
     }
     compiler.rustflags.extend(rustflags);
     let mut build_cmd = STANDARD_LIBRARY.build(&compiler, dirs);
-    maybe_incremental(&mut build_cmd);
     if channel == "release" {
         build_cmd.arg("--release");
     }
diff --git a/build_system/main.rs b/build_system/main.rs
index e8cf486e966..8a80d13ba9b 100644
--- a/build_system/main.rs
+++ b/build_system/main.rs
@@ -61,15 +61,17 @@ fn main() {
     env::set_var("CG_CLIF_DISABLE_INCR_CACHE", "1");
 
     if is_ci() {
-        // Disabling incr comp reduces cache size and incr comp doesn't save as much on CI anyway
-        env::set_var("CARGO_BUILD_INCREMENTAL", "false");
-
         if !is_ci_opt() {
             // Enable the Cranelift verifier
             env::set_var("CG_CLIF_ENABLE_VERIFIER", "1");
         }
     }
 
+    // Force incr comp even in release mode unless in CI or incremental builds are explicitly disabled
+    if env::var_os("CARGO_BUILD_INCREMENTAL").is_none() {
+        env::set_var("CARGO_BUILD_INCREMENTAL", "true");
+    }
+
     let mut args = env::args().skip(1);
     let command = match args.next().as_deref() {
         Some("prepare") => Command::Prepare,
diff --git a/build_system/utils.rs b/build_system/utils.rs
index 149f1618f5c..7b84ce37859 100644
--- a/build_system/utils.rs
+++ b/build_system/utils.rs
@@ -288,13 +288,3 @@ impl Drop for LogGroup {
         IN_GROUP.store(false, Ordering::SeqCst);
     }
 }
-
-pub(crate) fn maybe_incremental(cmd: &mut Command) {
-    if is_ci() || std::env::var("CARGO_BUILD_INCREMENTAL").map_or(false, |val| val == "false") {
-        // Disabling incr comp reduces cache size and incr comp doesn't save as much on CI anyway
-        cmd.env("CARGO_BUILD_INCREMENTAL", "false");
-    } else {
-        // Force incr comp even in release mode unless in CI or incremental builds are explicitly disabled
-        cmd.env("CARGO_BUILD_INCREMENTAL", "true");
-    }
-}

From 1bab6df32b7e593f75ab6470c0b650b345107995 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Tue, 2 Apr 2024 14:17:35 +0000
Subject: [PATCH 22/23] Remove all checks for CI in the build system

And introduce the CG_CLIF_EXPENSIVE_CHECKS env var in the place.
---
 .github/workflows/main.yml    | 11 +++++++----
 build_system/build_backend.rs | 12 ++++++------
 build_system/main.rs          |  9 +--------
 build_system/utils.rs         |  8 --------
 4 files changed, 14 insertions(+), 26 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index fee5a078396..913a5c5a850 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -44,6 +44,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     timeout-minutes: 60
 
+    env:
+      CG_CLIF_EXPENSIVE_CHECKS: 1
+
     strategy:
       fail-fast: false
       matrix:
@@ -182,10 +185,10 @@ jobs:
       run: ./y.sh prepare
 
     - name: Build
-      run: CI_OPT=1 ./y.sh build --sysroot none
+      run: ./y.sh build --sysroot none
 
     - name: Benchmark
-      run: CI_OPT=1 ./y.sh bench
+      run: ./y.sh bench
 
 
   dist:
@@ -237,10 +240,10 @@ jobs:
       run: ./y.sh prepare
 
     - name: Build backend
-      run: CI_OPT=1 ./y.sh build --sysroot none
+      run: ./y.sh build --sysroot none
 
     - name: Build sysroot
-      run: CI_OPT=1 ./y.sh build
+      run: ./y.sh build
 
     - name: Package prebuilt cg_clif
       run: tar cvfJ cg_clif.tar.xz dist
diff --git a/build_system/build_backend.rs b/build_system/build_backend.rs
index 20f1bba2272..129713e574a 100644
--- a/build_system/build_backend.rs
+++ b/build_system/build_backend.rs
@@ -1,9 +1,10 @@
+use std::env;
 use std::path::PathBuf;
 
 use crate::path::{Dirs, RelPath};
 use crate::rustc_info::get_file_name;
 use crate::shared_utils::{rustflags_from_env, rustflags_to_cmd_env};
-use crate::utils::{is_ci, is_ci_opt, CargoProject, Compiler, LogGroup};
+use crate::utils::{CargoProject, Compiler, LogGroup};
 
 pub(crate) static CG_CLIF: CargoProject = CargoProject::new(&RelPath::SOURCE, "cg_clif");
 
@@ -21,11 +22,10 @@ pub(crate) fn build_backend(
 
     rustflags.push("-Zallow-features=rustc_private".to_owned());
 
-    if is_ci() {
-        if !is_ci_opt() {
-            cmd.env("CARGO_PROFILE_RELEASE_DEBUG_ASSERTIONS", "true");
-            cmd.env("CARGO_PROFILE_RELEASE_OVERFLOW_CHECKS", "true");
-        }
+    if env::var("CG_CLIF_EXPENSIVE_CHECKS").is_ok() {
+        // Enabling debug assertions implicitly enables the clif ir verifier
+        cmd.env("CARGO_PROFILE_RELEASE_DEBUG_ASSERTIONS", "true");
+        cmd.env("CARGO_PROFILE_RELEASE_OVERFLOW_CHECKS", "true");
     }
 
     if use_unstable_features {
diff --git a/build_system/main.rs b/build_system/main.rs
index 8a80d13ba9b..cdd2bae03f8 100644
--- a/build_system/main.rs
+++ b/build_system/main.rs
@@ -6,7 +6,7 @@ use std::env;
 use std::path::PathBuf;
 use std::process;
 
-use self::utils::{is_ci, is_ci_opt, Compiler};
+use self::utils::Compiler;
 
 mod abi_cafe;
 mod bench;
@@ -60,13 +60,6 @@ fn main() {
     }
     env::set_var("CG_CLIF_DISABLE_INCR_CACHE", "1");
 
-    if is_ci() {
-        if !is_ci_opt() {
-            // Enable the Cranelift verifier
-            env::set_var("CG_CLIF_ENABLE_VERIFIER", "1");
-        }
-    }
-
     // Force incr comp even in release mode unless in CI or incremental builds are explicitly disabled
     if env::var_os("CARGO_BUILD_INCREMENTAL").is_none() {
         env::set_var("CARGO_BUILD_INCREMENTAL", "true");
diff --git a/build_system/utils.rs b/build_system/utils.rs
index 7b84ce37859..9f95122b341 100644
--- a/build_system/utils.rs
+++ b/build_system/utils.rs
@@ -254,14 +254,6 @@ pub(crate) fn copy_dir_recursively(from: &Path, to: &Path) {
     }
 }
 
-pub(crate) fn is_ci() -> bool {
-    env::var("CI").is_ok()
-}
-
-pub(crate) fn is_ci_opt() -> bool {
-    env::var("CI_OPT").is_ok()
-}
-
 static IN_GROUP: AtomicBool = AtomicBool::new(false);
 pub(crate) struct LogGroup {
     is_gha: bool,

From fbda869b4e230c788b6bce426038ba8419956f2d Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Wed, 27 Mar 2024 20:43:19 +0000
Subject: [PATCH 23/23] Add a couple more sync impls to mini_core

---
 example/mini_core.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/example/mini_core.rs b/example/mini_core.rs
index 85b0590809c..e45c16ee280 100644
--- a/example/mini_core.rs
+++ b/example/mini_core.rs
@@ -90,8 +90,9 @@ unsafe impl Sync for i16 {}
 unsafe impl Sync for i32 {}
 unsafe impl Sync for isize {}
 unsafe impl Sync for char {}
+unsafe impl Sync for f32 {}
 unsafe impl<'a, T: ?Sized> Sync for &'a T {}
-unsafe impl Sync for [u8; 16] {}
+unsafe impl<T: Sync, const N: usize> Sync for [T; N] {}
 
 #[lang = "freeze"]
 unsafe auto trait Freeze {}