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Rollup merge of #138182 - durin42:llvm-21-fp128-windows, r=tgross35

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rustc_target: update x86_win64 to match the documented calling convention for f128

llvm/llvm-project@5ee1c0b714 updates llvm to match the documented calling convention to pass f128 indirectly. This change makes us do that on all versions of LLVM, not just starting with LLVM 21.

`@rustbot` label llvm-main

try-job: dist-x86_64-msvc
try-job: dist-x86_64-mingw
try-job: x86_64-msvc-1
try-job: x86_64-msvc-2
try-job: x86_64-mingw-1
try-job: x86_64-mingw-2
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Stuart Cook 2025-04-11 13:31:44 +10:00 committed by GitHub
commit 63df6f1200
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1 changed files with 2 additions and 1 deletions
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tests/assembly/x86_64-windows-float-abi.rs
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@ -37,7 +37,8 @@ pub extern "C" fn second_f64(_: f64, x: f64) -> f64 {
}
// CHECK-LABEL: second_f128
// CHECK: movaps %xmm1, %xmm0
// FIXME(llvm21): this can be just %rdx instead of the regex once we don't test on LLVM 20
// CHECK: movaps {{(%xmm1|\(%rdx\))}}, %xmm0
// CHECK-NEXT: retq
#[no_mangle]
pub extern "C" fn second_f128(_: f128, x: f128) -> f128 {