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d0b9369094
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. llvm-svn: 238232
13 lines
317 B
LLVM
13 lines
317 B
LLVM
; RUN: llc < %s -march=x86-64 -mcpu=core2 | FileCheck %s
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; Basic 128-bit cmpxchg
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define void @t1(i128* nocapture %p) nounwind ssp {
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entry:
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; CHECK: movl $1, %ebx
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; CHECK: lock cmpxchg16b
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%r = cmpxchg i128* %p, i128 0, i128 1 seq_cst seq_cst
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ret void
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}
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; FIXME: Handle 128-bit atomicrmw/load atomic/store atomic
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