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Preserve line number information. 

llvm-svn: 130450
This commit is contained in:
Devang Patel 2011-04-28 22:48:14 +00:00
parent c99298ab5e
commit 80d1d3aaec
1 changed files with 7 additions and 0 deletions
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7
llvm/lib/Transforms/Scalar/Reassociate.cpp
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@ -217,6 +217,7 @@ static Instruction *LowerNegateToMultiply(Instruction *Neg,
ValueRankMap.erase(Neg);
Res->takeName(Neg);
Neg->replaceAllUsesWith(Res);
Res->setDebugLoc(Neg->getDebugLoc());
Neg->eraseFromParent();
return Res;
}
@ -506,6 +507,7 @@ static Instruction *BreakUpSubtract(Instruction *Sub,
// Everyone now refers to the add instruction.
ValueRankMap.erase(Sub);
Sub->replaceAllUsesWith(New);
New->setDebugLoc(Sub->getDebugLoc());
Sub->eraseFromParent();
DEBUG(dbgs() << "Negated: " << *New << '\n');
@ -531,6 +533,7 @@ static Instruction *ConvertShiftToMul(Instruction *Shl,
ValueRankMap.erase(Shl);
Mul->takeName(Shl);
Shl->replaceAllUsesWith(Mul);
Mul->setDebugLoc(Shl->getDebugLoc());
Shl->eraseFromParent();
return Mul;
}
@ -1052,6 +1055,8 @@ Value *Reassociate::ReassociateExpression(BinaryOperator *I) {
// eliminate it.
DEBUG(dbgs() << "Reassoc to scalar: " << *V << '\n');
I->replaceAllUsesWith(V);
if (Instruction *VI = dyn_cast<Instruction>(V))
VI->setDebugLoc(I->getDebugLoc());
RemoveDeadBinaryOp(I);
++NumAnnihil;
return V;
@ -1075,6 +1080,8 @@ Value *Reassociate::ReassociateExpression(BinaryOperator *I) {
// This expression tree simplified to something that isn't a tree,
// eliminate it.
I->replaceAllUsesWith(Ops[0].Op);
if (Instruction *OI = dyn_cast<Instruction>(Ops[0].Op))
OI->setDebugLoc(I->getDebugLoc());
RemoveDeadBinaryOp(I);
return Ops[0].Op;
}