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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-- -mattr=-sse -O0 | FileCheck %s
; PR9675
define i32 @t() {
; CHECK-LABEL: t:
; CHECK: # %bb.0:
; CHECK-NEXT: movl $1, -{{[0-9]+}}(%rsp)
; CHECK-NEXT: lock orl $0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT: lock decl -{{[0-9]+}}(%rsp)
; CHECK-NEXT: lock orl $0, -{{[0-9]+}}(%rsp)
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: retq
%i = alloca i32, align 4
store i32 1, ptr %i, align 4
fence seq_cst
%t0 = atomicrmw sub ptr %i, i32 1 monotonic
fence seq_cst
ret i32 0
}
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