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bug 122: 

- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass

llvm-svn: 14946
This commit is contained in:
Reid Spencer 2004-07-18 00:29:57 +00:00
parent 5f6815980b
commit 9e855c6832
2 changed files with 6 additions and 5 deletions
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5
llvm/lib/Transforms/Scalar/CorrelatedExprs.cpp
View File

@ -243,7 +243,7 @@ namespace {
void BuildRankMap(Function &F);
unsigned getRank(Value *V) const {
if (isa<Constant>(V) || isa<GlobalValue>(V)) return 0;
if (isa<Constant>(V)) return 0;
std::map<Value*, unsigned>::const_iterator I = RankMap.find(V);
if (I != RankMap.end()) return I->second;
return 0; // Must be some other global thing
@ -476,7 +476,8 @@ bool CEE::ForwardCorrelatedEdgeDestination(TerminatorInst *TI, unsigned SuccNo,
ValueInfo &PredicateVI = NewRI.getValueInfo(BI->getCondition());
if (PredicateVI.getReplacement() &&
isa<Constant>(PredicateVI.getReplacement())) {
isa<Constant>(PredicateVI.getReplacement()) &&
!isa<GlobalValue>(PredicateVI.getReplacement())) {
ConstantBool *CB = cast<ConstantBool>(PredicateVI.getReplacement());
// Forward to the successor that corresponds to the branch we will take.

6
llvm/lib/Transforms/Scalar/LowerGC.cpp
View File

@ -140,7 +140,8 @@ bool LowerGC::doInitialization(Module &M) {
/// not have the specified type, insert a cast.
static void Coerce(Instruction *I, unsigned OpNum, Type *Ty) {
if (I->getOperand(OpNum)->getType() != Ty) {
if (Constant *C = dyn_cast<Constant>(I->getOperand(OpNum)))
Constant *C = dyn_cast<Constant>(I->getOperand(OpNum));
if (C && !isa<GlobalValue>(I->getOperand(OpNum)))
I->setOperand(OpNum, ConstantExpr::getCast(C, Ty));
else {
CastInst *C = new CastInst(I->getOperand(OpNum), Ty, "", I);
@ -252,8 +253,7 @@ bool LowerGC::runOnFunction(Function &F) {
Par[2] = ConstantUInt::get(Type::UIntTy, i);
Par[3] = One;
Value *MetaDataPtr = new GetElementPtrInst(AI, Par, "MetaDataPtr", IP);
assert(isa<Constant>(GCRoots[i]->getOperand(2)) ||
isa<GlobalValue>(GCRoots[i]->getOperand(2)));
assert(isa<Constant>(GCRoots[i]->getOperand(2)) && "Must be a constant");
new StoreInst(GCRoots[i]->getOperand(2), MetaDataPtr, IP);
// Initialize the root pointer to null on entry to the function.