llvm.org GIT mirror llvm / ac6a87b test / CodeGen / X86 / membarrier.ll
ac6a87b

Tree @ac6a87b (Download .tar.gz)

membarrier.ll @ac6a87braw · history · blame

; RUN: llc < %s -march=x86-64 -mattr=-sse -O0
; PR9675

define i32 @t() {
entry:
  %i = alloca i32, align 4
  store i32 1, i32* %i, align 4
  fence seq_cst
  %0 = atomicrmw sub i32* %i, i32 1 monotonic
  fence seq_cst
  ret i32 0
}