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Fix a potential bug that can cause miscomparison with and without debug info.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114220 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2010-09-17 21:56:26 +00:00
parent 38cb1cdfb7
commit f437f73348
1 changed files with 1 additions and 1 deletions
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2
lib/CodeGen/MachineCSE.cpp
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@ -101,7 +101,7 @@ bool MachineCSE::PerformTrivialCoalescing(MachineInstr *MI,
unsigned Reg = MO.getReg(); unsigned Reg = MO.getReg();
if (!Reg || TargetRegisterInfo::isPhysicalRegister(Reg)) if (!Reg || TargetRegisterInfo::isPhysicalRegister(Reg))
continue; continue;
if (!MRI->hasOneUse(Reg)) if (!MRI->hasOneNonDBGUse(Reg))
// Only coalesce single use copies. This ensure the copy will be // Only coalesce single use copies. This ensure the copy will be
// deleted. // deleted.
continue; continue;