22 lines
550 B
LLVM
22 lines
550 B
LLVM
; RUN: llc -mtriple=arm-eabi -mcpu=cortex-a9 %s -o - | FileCheck %s
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; CHECK-LABEL: max:
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define i32 @max(i8 %ctx, i32* %ptr, i32 %val)
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{
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; CHECK: ldrex
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; CHECK: cmp [[old:r[0-9]*]], [[val:r[0-9]*]]
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; CHECK: movhi {{r[0-9]*}}, [[old]]
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%old = atomicrmw umax i32* %ptr, i32 %val monotonic
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ret i32 %old
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}
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; CHECK-LABEL: min:
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define i32 @min(i8 %ctx, i32* %ptr, i32 %val)
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{
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; CHECK: ldrex
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; CHECK: cmp [[old:r[0-9]*]], [[val:r[0-9]*]]
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; CHECK: movls {{r[0-9]*}}, [[old]]
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%old = atomicrmw umin i32* %ptr, i32 %val monotonic
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ret i32 %old
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}
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