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PR3934: Fix a bogus two-address pass assertion.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68979 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2009-04-13 20:04:24 +00:00
parent 7126702edf
commit 3005ed6048
2 changed files with 26 additions and 8 deletions
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18
lib/CodeGen/TwoAddressInstructionPass.cpp
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@ -628,10 +628,10 @@ void TwoAddressInstructionPass::ProcessCopy(MachineInstr *MI,
if (IsDstPhys && !IsSrcPhys)
DstRegMap.insert(std::make_pair(SrcReg, DstReg));
else if (!IsDstPhys && IsSrcPhys) {
bool isNew =
SrcRegMap.insert(std::make_pair(DstReg, SrcReg)).second;
isNew = isNew; // Silence compiler warning.
assert(isNew && "Can't map to two src physical registers!");
bool isNew = SrcRegMap.insert(std::make_pair(DstReg, SrcReg)).second;
if (!isNew)
assert(SrcRegMap[DstReg] == SrcReg &&
"Can't map to two src physical registers!");
SmallVector<unsigned, 4> VirtRegPairs;
bool isCopy = false;
@ -653,8 +653,9 @@ void TwoAddressInstructionPass::ProcessCopy(MachineInstr *MI,
break;
}
bool isNew = SrcRegMap.insert(std::make_pair(NewReg, DstReg)).second;
isNew = isNew; // Silence compiler warning.
assert(isNew && "Can't map to two src physical registers!");
if (!isNew)
assert(SrcRegMap[NewReg] == DstReg &&
"Can't map to two src physical registers!");
VirtRegPairs.push_back(NewReg);
DstReg = NewReg;
}
@ -666,8 +667,9 @@ void TwoAddressInstructionPass::ProcessCopy(MachineInstr *MI,
unsigned FromReg = VirtRegPairs.back();
VirtRegPairs.pop_back();
bool isNew = DstRegMap.insert(std::make_pair(FromReg, ToReg)).second;
isNew = isNew; // Silence compiler warning.
assert(isNew && "Can't map to two dst physical registers!");
if (!isNew)
assert(DstRegMap[FromReg] == ToReg &&
"Can't map to two dst physical registers!");
ToReg = FromReg;
}
}