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Recommit r236670: [opaque pointer type] Pass explicit pointer type through GEP constant folding""

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Clang regressions were caused by more stringent assertion checking
introduced by this change. Small fix needed to clang has been committed
in r236751.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236752 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie
2015-05-07 17:28:58 +00:00
parent aa46024ea3
commit ad80c2d9ed
4 changed files with 36 additions and 16 deletions
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12
lib/IR/Constants.cpp
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@ -2015,14 +2015,16 @@ Constant *ConstantExpr::getSelect(Constant *C, Constant *V1, Constant *V2,
Constant *ConstantExpr::getGetElementPtr(Type *Ty, Constant *C,
ArrayRef<Value *> Idxs, bool InBounds,
Type *OnlyIfReducedTy) {
if (Constant *FC = ConstantFoldGetElementPtr(C, InBounds, Idxs))
return FC; // Fold a few common cases.
if (!Ty)
Ty = cast<PointerType>(C->getType()->getScalarType())->getElementType();
else
assert(Ty ==
cast<PointerType>(C->getType()->getScalarType())->getElementType());
assert(
Ty ==
cast<PointerType>(C->getType()->getScalarType())->getContainedType(0u));
if (Constant *FC = ConstantFoldGetElementPtr(Ty, C, InBounds, Idxs))
return FC; // Fold a few common cases.
// Get the result type of the getelementptr!
Type *DestTy = GetElementPtrInst::getIndexedType(Ty, Idxs);
assert(DestTy && "GEP indices invalid!");