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Add a Constant version of stripPointerCasts.

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Thanks to rnk for the suggestion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210205 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2014-06-04 19:01:48 +00:00
parent dcac1523c0
commit cfee6c49ea
4 changed files with 13 additions and 5 deletions
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8
include/llvm/IR/Constant.h
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@ -163,6 +163,14 @@ public:
/// that want to check to see if a global is unused, but don't want to deal
/// with potentially dead constants hanging off of the globals.
void removeDeadConstantUsers() const;
Constant *stripPointerCasts() {
return cast<Constant>(Value::stripPointerCasts());
}
const Constant *stripPointerCasts() const {
return const_cast<Constant*>(this)->stripPointerCasts();
}
};
} // End llvm namespace

2
lib/Analysis/ConstantFolding.cpp
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@ -706,7 +706,7 @@ static Constant *CastGEPIndices(ArrayRef<Constant *> Ops,
static Constant* StripPtrCastKeepAS(Constant* Ptr) {
assert(Ptr->getType()->isPointerTy() && "Not a pointer type");
PointerType *OldPtrTy = cast<PointerType>(Ptr->getType());
Ptr = cast<Constant>(Ptr->stripPointerCasts());
Ptr = Ptr->stripPointerCasts();
PointerType *NewPtrTy = cast<PointerType>(Ptr->getType());
// Preserve the address space number of the pointer.

2
lib/ExecutionEngine/JIT/JITEmitter.cpp
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@ -687,7 +687,7 @@ void *JITResolver::JITCompilerFn(void *Stub) {
//
static GlobalObject *getSimpleAliasee(Constant *C) {
C = cast<Constant>(C->stripPointerCasts());
C = C->stripPointerCasts();
return dyn_cast<GlobalObject>(C);
}

6
lib/Transforms/InstCombine/InstructionCombining.cpp
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@ -2108,7 +2108,7 @@ Instruction *InstCombiner::visitLandingPadInst(LandingPadInst &LI) {
if (LI.isCatch(i)) {
// A catch clause.
Constant *CatchClause = LI.getClause(i);
Constant *TypeInfo = cast<Constant>(CatchClause->stripPointerCasts());
Constant *TypeInfo = CatchClause->stripPointerCasts();
// If we already saw this clause, there is no point in having a second
// copy of it.
@ -2181,8 +2181,8 @@ Instruction *InstCombiner::visitLandingPadInst(LandingPadInst &LI) {
// catch-alls. If so, the filter can be discarded.
bool SawCatchAll = false;
for (unsigned j = 0; j != NumTypeInfos; ++j) {
Value *Elt = Filter->getOperand(j);
Constant *TypeInfo = cast<Constant>(Elt->stripPointerCasts());
Constant *Elt = Filter->getOperand(j);
Constant *TypeInfo = Elt->stripPointerCasts();
if (isCatchAll(Personality, TypeInfo)) {
// This element is a catch-all. Bail out, noting this fact.
SawCatchAll = true;