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Address Duncan's comments on r167121.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167130 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -3201,7 +3201,7 @@ static bool ValidLookupTableConstant(Constant *C) {
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}
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/// LookupConstant - If V is a Constant, return it. Otherwise, try to look up
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/// its constant value in ConstantPool, returning NULL if it's not there.
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/// its constant value in ConstantPool, returning 0 if it's not there.
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static Constant *LookupConstant(Value *V,
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const SmallDenseMap<Value*, Constant*>& ConstantPool) {
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if (Constant *C = dyn_cast<Constant>(V))
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@ -3212,7 +3212,7 @@ static Constant *LookupConstant(Value *V,
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/// ConstantFold - Try to fold instruction I into a constant. This works for
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/// simple instructions such as binary operations where both operands are
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/// constant or can be replaced by constants from the ConstantPool. Returns the
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/// resulting constant on success, NULL otherwise.
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/// resulting constant on success, 0 otherwise.
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static Constant *ConstantFold(Instruction *I,
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const SmallDenseMap<Value*, Constant*>& ConstantPool) {
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if (BinaryOperator *BO = dyn_cast<BinaryOperator>(I)) {
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@ -3243,6 +3243,7 @@ static Constant *ConstantFold(Instruction *I,
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return LookupConstant(Select->getTrueValue(), ConstantPool);
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if (A->isNullValue())
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return LookupConstant(Select->getFalseValue(), ConstantPool);
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return 0;
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}
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if (CastInst *Cast = dyn_cast<CastInst>(I)) {
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@ -3257,7 +3258,7 @@ static Constant *ConstantFold(Instruction *I,
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/// GetCaseResults - Try to determine the resulting constant values in phi nodes
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/// at the common destination basic block, *CommonDest, for one of the case
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/// destionations CaseDest corresponding to value CaseVal (NULL for the default
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/// destionations CaseDest corresponding to value CaseVal (0 for the default
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/// case), of a switch instruction SI.
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static bool GetCaseResults(SwitchInst *SI,
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ConstantInt *CaseVal,
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