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Teach InstructionSimplify about pointer address spaces

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187635 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault 2013-08-02 00:10:44 +00:00
parent ddbdeefa28
commit 7eef3bdd7b
1 changed files with 9 additions and 4 deletions
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13
lib/Analysis/InstructionSimplify.cpp
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@ -676,7 +676,8 @@ static Constant *stripAndComputeConstantOffsets(const DataLayout *TD,
if (!TD)
return ConstantInt::get(IntegerType::get(V->getContext(), 64), 0);
unsigned IntPtrWidth = TD->getPointerSizeInBits();
unsigned AS = V->getType()->getPointerAddressSpace();
unsigned IntPtrWidth = TD->getPointerSizeInBits(AS);
APInt Offset = APInt::getNullValue(IntPtrWidth);
// Even though we don't look through PHI nodes, we could be called on an
@ -689,7 +690,11 @@ static Constant *stripAndComputeConstantOffsets(const DataLayout *TD,
break;
V = GEP->getPointerOperand();
} else if (Operator::getOpcode(V) == Instruction::BitCast) {
V = cast<Operator>(V)->getOperand(0);
Value *Op0 = cast<Operator>(V)->getOperand(0);
assert(TD->getPointerTypeSizeInBits(V->getType()) ==
TD->getPointerTypeSizeInBits(Op0->getType()) &&
"Bitcasting between pointers from different size address spaces");
V = Op0;
} else if (GlobalAlias *GA = dyn_cast<GlobalAlias>(V)) {
if (GA->mayBeOverridden())
break;
@ -701,7 +706,7 @@ static Constant *stripAndComputeConstantOffsets(const DataLayout *TD,
"Unexpected operand type!");
} while (Visited.insert(V));
Type *IntPtrTy = TD->getIntPtrType(V->getContext());
Type *IntPtrTy = TD->getIntPtrType(V->getContext(), AS);
Constant *OffsetIntPtr = ConstantInt::get(IntPtrTy, Offset);
if (V->getType()->isVectorTy())
return ConstantVector::getSplat(V->getType()->getVectorNumElements(),
@ -2034,7 +2039,7 @@ static Value *SimplifyICmpInst(unsigned Predicate, Value *LHS, Value *RHS,
// Turn icmp (ptrtoint x), (ptrtoint/constant) into a compare of the input
// if the integer type is the same size as the pointer type.
if (MaxRecurse && Q.TD && isa<PtrToIntInst>(LI) &&
Q.TD->getPointerSizeInBits() == DstTy->getPrimitiveSizeInBits()) {
Q.TD->getTypeSizeInBits(SrcTy) == DstTy->getPrimitiveSizeInBits()) {
if (Constant *RHSC = dyn_cast<Constant>(RHS)) {
// Transfer the cast to the constant.
if (Value *V = SimplifyICmpInst(Pred, SrcOp,