32 lines
785 B
LLVM
32 lines
785 B
LLVM
; RUN: llc -mtriple=x86_64-- < %s | FileCheck %s
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@sc8 = external global i8
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define void @atomic_maxmin_i8() {
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; CHECK: atomic_maxmin_i8
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%1 = atomicrmw max i8* @sc8, i8 5 acquire
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; CHECK: [[LABEL1:\.?LBB[0-9]+_[0-9]+]]:
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; CHECK: cmpb
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; CHECK: jg
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; CHECK: lock cmpxchgb
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; CHECK: jne [[LABEL1]]
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%2 = atomicrmw min i8* @sc8, i8 6 acquire
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; CHECK: [[LABEL3:\.?LBB[0-9]+_[0-9]+]]:
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; CHECK: cmpb
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; CHECK: jl
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; CHECK: lock cmpxchgb
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; CHECK: jne [[LABEL3]]
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%3 = atomicrmw umax i8* @sc8, i8 7 acquire
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; CHECK: [[LABEL5:\.?LBB[0-9]+_[0-9]+]]:
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; CHECK: cmpb
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; CHECK: ja
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; CHECK: lock cmpxchgb
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; CHECK: jne [[LABEL5]]
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%4 = atomicrmw umin i8* @sc8, i8 8 acquire
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; CHECK: [[LABEL7:\.?LBB[0-9]+_[0-9]+]]:
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; CHECK: cmpb
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; CHECK: jb
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; CHECK: lock cmpxchgb
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; CHECK: jne [[LABEL7]]
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ret void
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}
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