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890a876e0e
This gets gas and llc -filetype=obj to agree on the order of prefixes. For llvm-mc we need to fix the asm parser to know that it makes a difference on which line the "lock" is in. Part of pr23594. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238232 91177308-0d34-0410-b5e6-96231b3b80d8
20 lines
487 B
LLVM
20 lines
487 B
LLVM
; RUN: llc < %s -mcpu=corei7 -march=x86 -verify-machineinstrs | FileCheck %s
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; 64-bit load/store on x86-32
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; FIXME: The generated code can be substantially improved.
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define void @test1(i64* %ptr, i64 %val1) {
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; CHECK-LABEL: test1
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; CHECK: lock cmpxchg8b
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; CHECK-NEXT: jne
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store atomic i64 %val1, i64* %ptr seq_cst, align 8
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ret void
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}
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define i64 @test2(i64* %ptr) {
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; CHECK-LABEL: test2
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; CHECK: lock cmpxchg8b
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%val = load atomic i64, i64* %ptr seq_cst, align 8
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ret i64 %val
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}
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