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; RUN: llc < %s -march=x86-64 -mattr=-sse -O0
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; PR9675
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define i32 @t() {
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entry:
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%i = alloca i32, align 4
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store i32 1, i32* %i, align 4
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fence seq_cst
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%0 = atomicrmw sub i32* %i, i32 1 monotonic
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fence seq_cst
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ret i32 0
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}
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