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Auto merge of #123555 - DianQK:update-llvm-18, r=cuviper 

Update to LLVM 18.1.3

Fixes #122805.

This should work on all targets: https://rust.godbolt.org/z/svW8ha31z.

r? `@cuviper`
This commit is contained in:
bors 2024-04-07 06:33:58 +00:00
parent af2525317b 5acfe772fa
commit 0e3235f85b
2 changed files with 36 additions and 1 deletions
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2
src/llvm-project

@ -1 +1 @@
Subproject commit 0af6c732ec6ca189cd7725e4a7d4290793046e83
Subproject commit af8f9eb61a2ad4ee1f2d3f46d157b93a47c6a4bf

35
tests/codegen/issues/issue-122805.rs Normal file
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//@ compile-flags: -O
//@ min-llvm-version: 18.1.3
#![crate_type = "lib"]
#![no_std]
// The code is from https://github.com/rust-lang/rust/issues/122805.
// Ensure we do not generate the shufflevector instruction
// to avoid complicating the code.
// CHECK-LABEL: define{{.*}}void @convert(
// CHECK-NOT: shufflevector
// CHECK: insertelement <8 x i16>
// CHECK-NEXT: insertelement <8 x i16>
// CHECK-NEXT: insertelement <8 x i16>
// CHECK-NEXT: insertelement <8 x i16>
// CHECK-NEXT: insertelement <8 x i16>
// CHECK-NEXT: insertelement <8 x i16>
// CHECK-NEXT: insertelement <8 x i16>
// CHECK-NEXT: insertelement <8 x i16>
// CHECK-NEXT: store <8 x i16>
// CHECK-NEXT: ret void
#[no_mangle]
pub fn convert(value: [u16; 8]) -> [u8; 16] {
let addr16 = [
value[0].to_be(),
value[1].to_be(),
value[2].to_be(),
value[3].to_be(),
value[4].to_be(),
value[5].to_be(),
value[6].to_be(),
value[7].to_be(),
];
unsafe { core::mem::transmute::<_, [u8; 16]>(addr16) }
}