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bors 2d5a628a1d Auto merge of #128165 - saethlin:optimize-clone-shims, r=compiler-errors 
Let InstCombine remove Clone shims inside Clone shims

The Clone shims that we generate tend to recurse into other Clone shims, which gets very silly very quickly. Here's our current state: https://godbolt.org/z/E69YeY8eq

So I've added InstSimplify to the shims optimization passes, and improved `is_trivially_pure_clone_copy` so that it can delete those calls inside the shim. This makes the shim way smaller because most of its size is the required ceremony for unwinding.

This change also completely breaks the UI test added for https://github.com/rust-lang/rust/issues/104870. With this PR, that program ICEs in MIR type checking because `is_trivially_pure_clone_copy` and the trait solver disagree on whether `*mut u8` is `Copy`. And adding the requisite `Copy` impl to make them agree makes the test not generate any diagnostics. Considering that I spent most of my time on this PR fixing `#![no_core]` tests, I would prefer to just delete this one. The maintenance burden of `#![no_core]` is uniquely high because when they break they tend to break in very confusing ways.

try-job: x86_64-mingw
 		2024-07-26 13:13:04 +00:00
..
asm Rollup merge of #126555 - beetrees:f16-inline-asm-arm, r=Amanieu 2024-06-22 12:57:18 +02:00
auxiliary Move /src/test to /tests 2023-01-11 09:32:08 +00:00
libs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
nvptx-kernel-abi NVPTX:_Especially add the DoubleI32 struct as a nvptx abi test case since it was used as an example when discussing possible problems 2024-05-31 23:12:33 +02:00
stack-protector Run rustfmt on `tests/assembly/`. 2024-05-30 16:15:46 +10:00
targets Add NuttX based targets for RISC-V and ARM 2024-07-19 22:00:42 +08:00
aarch64-naked-fn-no-bti-prolog.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
aarch64-pointer-auth.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
align_offset.rs Run rustfmt on `tests/assembly/`. 2024-05-30 16:15:46 +10:00
asm-comments.rs Always preserve user-written comments in assembly 2024-07-02 21:41:59 -04:00
closure-inherit-target-feature.rs Run rustfmt on `tests/assembly/`. 2024-05-30 16:15:46 +10:00
dwarf4.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
dwarf5.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
is_aligned.rs Run rustfmt on `tests/assembly/`. 2024-05-30 16:15:46 +10:00
issue-83585-small-pod-struct-equality.rs Fix tests for 32 bits targets 2024-06-11 07:45:16 +00:00
manual-eq-efficient.rs Add test for efficient codegen of manual `eq` implementations of a small struct 2024-04-30 13:21:08 +00:00
niche-prefer-zero.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
nvptx-arch-default.rs NVPTX: Enable previously disabled tests 2024-03-11 13:35:58 +01:00
nvptx-arch-emit-asm.rs NVPTX: Enable previously disabled tests 2024-03-11 13:35:58 +01:00
nvptx-arch-link-arg.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
nvptx-arch-target-cpu.rs NVPTX: Enable previously disabled tests 2024-03-11 13:35:58 +01:00
nvptx-atomics.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
nvptx-c-abi-arg-v7.rs NVPTX:_Especially add the DoubleI32 struct as a nvptx abi test case since it was used as an example when discussing possible problems 2024-05-31 23:12:33 +02:00
nvptx-c-abi-ret-v7.rs NVPTX:_Especially add the DoubleI32 struct as a nvptx abi test case since it was used as an example when discussing possible problems 2024-05-31 23:12:33 +02:00
nvptx-internalizing.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
nvptx-linking-binary.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
nvptx-linking-cdylib.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
nvptx-safe-naming.rs NVPTX: Enable previously disabled tests 2024-03-11 13:35:58 +01:00
panic-no-unwind-no-uwtable.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
panic-unwind-no-uwtable.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
pic-relocation-model.rs Run rustfmt on `tests/assembly/`. 2024-05-30 16:15:46 +10:00
pie-relocation-model.rs Run rustfmt on `tests/assembly/`. 2024-05-30 16:15:46 +10:00
simd-bitmask.rs Remove c_unwind from tests and fix tests 2024-06-19 13:54:55 +01:00
simd-intrinsic-gather.rs Remove c_unwind from tests and fix tests 2024-06-19 13:54:55 +01:00
simd-intrinsic-mask-load.rs Let InstCombine remove Clone shims inside Clone shims 2024-07-25 15:14:42 -04:00
simd-intrinsic-mask-reduce.rs Remove c_unwind from tests and fix tests 2024-06-19 13:54:55 +01:00
simd-intrinsic-mask-store.rs Let InstCombine remove Clone shims inside Clone shims 2024-07-25 15:14:42 -04:00
simd-intrinsic-scatter.rs Remove c_unwind from tests and fix tests 2024-06-19 13:54:55 +01:00
simd-intrinsic-select.rs Remove c_unwind from tests and fix tests 2024-06-19 13:54:55 +01:00
slice-is_ascii.rs Ignore less tests in debug builds 2024-02-23 18:04:01 -05:00
sparc-struct-abi.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
stack-probes.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
static-relocation-model.rs Run rustfmt on `tests/assembly/`. 2024-05-30 16:15:46 +10:00
strict_provenance.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
target-feature-multiple.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
thin-lto.rs Run rustfmt on `tests/assembly/`. 2024-05-30 16:15:46 +10:00
wasm_exceptions.rs Fix wasm_exceptions test 2024-06-19 21:26:48 +01:00
x86-return-float.rs Ensure tests don't fail on i586 in CI 2024-07-01 17:39:30 +01:00
x86_64-array-pair-load-store-merge.rs Make more of the test suite run on Mac Catalyst 2024-05-28 12:31:33 +02:00
x86_64-cmp.rs Add+Use `mir::BinOp::Cmp` 2024-03-23 23:23:41 -07:00
x86_64-floating-point-clamp.rs Add inline comments why we're forcing the target cpu 2024-05-01 16:54:20 -07:00
x86_64-fortanix-unknown-sgx-lvi-generic-load.rs Run rustfmt on `tests/assembly/`. 2024-05-30 16:15:46 +10:00
x86_64-fortanix-unknown-sgx-lvi-generic-ret.rs Run rustfmt on `tests/assembly/`. 2024-05-30 16:15:46 +10:00
x86_64-fortanix-unknown-sgx-lvi-inline-assembly.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
x86_64-function-return.rs Make more of the test suite run on Mac Catalyst 2024-05-28 12:31:33 +02:00
x86_64-naked-fn-no-cet-prolog.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
x86_64-no-jump-tables.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
x86_64-sse_crc.rs [AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives 2024-02-22 16:04:04 +00:00
x86_64-typed-swap.rs Avoid non-windows non-linux in assembly x64 test 2024-03-23 00:02:53 -07:00