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view test/CodeGen/X86/cmpxchg16b.ll @ 33:e4204d083e25

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LLVM 3.5
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 14:32:10 +0900
parents 95c75e76d11b
children 54457678186b
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; RUN: llc < %s -march=x86-64 -mcpu=core2 | FileCheck %s

; Basic 128-bit cmpxchg
define void @t1(i128* nocapture %p) nounwind ssp {
entry:
; CHECK: movl	$1, %ebx
; CHECK: lock
; CHECK-NEXT: cmpxchg16b
  %r = cmpxchg i128* %p, i128 0, i128 1 seq_cst
  ret void
}

; FIXME: Handle 128-bit atomicrmw/load atomic/store atomic