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[MachineSink] Use the real post dominator tree
[oota-llvm.git]
/
test
/
CodeGen
/
X86
/
pr21099.ll
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; RUN: llc < %s -O2 -march=x86-64 -verify-machineinstrs | FileCheck %s
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define void @pr21099(i64* %p) {
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; CHECK-LABEL: pr21099
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; CHECK: lock
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; CHECK-NEXT: addq $-2147483648
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; This number is INT32_MIN: 0x80000000UL
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%1 = atomicrmw add i64* %p, i64 -2147483648 seq_cst
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ret void
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}