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14 lines
331 B
LLVM
14 lines
331 B
LLVM
; RUN: llc < %s -mtriple=i386-pc-linux -mcpu=corei7 | FileCheck %s
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define i64 @atomicSub(i64* %a, i64 %b) nounwind {
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entry:
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%0 = atomicrmw sub i64* %a, i64 %b seq_cst
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ret i64 %0
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; CHECK: atomicSub
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; CHECK: movl %eax, %ebx
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; CHECK: subl {{%[a-z]+}}, %ebx
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; CHECK: movl %edx, %ecx
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; CHECK: sbbl {{%[a-z]+}}, %ecx
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; CHECK: ret
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}
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