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Change the implementation of dominates(inst, inst) to one based on what the

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verifier does. This correctly handles invoke.
Thanks to Duncan, Andrew and Chris for the comments.
Thanks to Joerg for the early testing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151469 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2012-02-26 02:19:19 +00:00
parent 8691216d91
commit c9ae8cc24c
5 changed files with 156 additions and 32 deletions
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11
lib/Analysis/ScalarEvolutionExpander.cpp
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@ -515,8 +515,7 @@ Value *SCEVExpander::expandAddToGEP(const SCEV *const *op_begin,
Type::getInt8PtrTy(Ty->getContext(), PTy->getAddressSpace()));
assert(!isa<Instruction>(V) ||
SE.DT->properlyDominates(cast<Instruction>(V),
Builder.GetInsertPoint()));
SE.DT->dominates(cast<Instruction>(V), Builder.GetInsertPoint()));
// Expand the operands for a plain byte offset.
Value *Idx = expandCodeFor(SE.getAddExpr(Ops), Ty);
@ -908,7 +907,7 @@ Instruction *SCEVExpander::getIVIncOperand(Instruction *IncV,
case Instruction::Add:
case Instruction::Sub: {
Instruction *OInst = dyn_cast<Instruction>(IncV->getOperand(1));
if (!OInst || SE.DT->properlyDominates(OInst, InsertPos))
if (!OInst || SE.DT->dominates(OInst, InsertPos))
return dyn_cast<Instruction>(IncV->getOperand(0));
return NULL;
}
@ -920,7 +919,7 @@ Instruction *SCEVExpander::getIVIncOperand(Instruction *IncV,
if (isa<Constant>(*I))
continue;
if (Instruction *OInst = dyn_cast<Instruction>(*I)) {
if (!SE.DT->properlyDominates(OInst, InsertPos))
if (!SE.DT->dominates(OInst, InsertPos))
return NULL;
}
if (allowScale) {
@ -947,7 +946,7 @@ Instruction *SCEVExpander::getIVIncOperand(Instruction *IncV,
/// it available to other uses in this loop. Recursively hoist any operands,
/// until we reach a value that dominates InsertPos.
bool SCEVExpander::hoistIVInc(Instruction *IncV, Instruction *InsertPos) {
if (SE.DT->properlyDominates(IncV, InsertPos))
if (SE.DT->dominates(IncV, InsertPos))
return true;
// InsertPos must itself dominate IncV so that IncV's new position satisfies
@ -964,7 +963,7 @@ bool SCEVExpander::hoistIVInc(Instruction *IncV, Instruction *InsertPos) {
// IncV is safe to hoist.
IVIncs.push_back(IncV);
IncV = Oper;
if (SE.DT->properlyDominates(IncV, InsertPos))
if (SE.DT->dominates(IncV, InsertPos))
break;
}
for (SmallVectorImpl<Instruction*>::reverse_iterator I = IVIncs.rbegin(),