llvm/test/CodeGen/X86/membarrier.ll
2011-09-27 00:17:29 +00:00

13 lines
232 B
LLVM

; 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
}