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Resubmit the changes to llvm core to update the functions to support different pointer sizes on a per address space basis.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165941 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Micah Villmow
2012-10-15 16:24:29 +00:00
parent f35c62bf02
commit 2c39b15073
40 changed files with 190 additions and 109 deletions
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9
lib/Transforms/InstCombine/InstCombineCompares.cpp
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@@ -365,11 +365,12 @@ FoldCmpLoadFromIndexedGlobal(GetElementPtrInst *GEP, GlobalVariable *GV,
// order the state machines in complexity of the generated code.
Value *Idx = GEP->getOperand(2);
unsigned AS = GEP->getPointerAddressSpace();
// If the index is larger than the pointer size of the target, truncate the
// index down like the GEP would do implicitly. We don't have to do this for
// an inbounds GEP because the index can't be out of range.
if (!GEP->isInBounds() &&
Idx->getType()->getPrimitiveSizeInBits() > TD->getPointerSizeInBits())
Idx->getType()->getPrimitiveSizeInBits() > TD->getPointerSizeInBits(AS))
Idx = Builder->CreateTrunc(Idx, TD->getIntPtrType(Idx->getContext()));
// If the comparison is only true for one or two elements, emit direct
@@ -528,10 +529,11 @@ static Value *EvaluateGEPOffsetExpression(User *GEP, InstCombiner &IC) {
}
}
unsigned AS = cast<GetElementPtrInst>(GEP)->getPointerAddressSpace();
// Okay, we know we have a single variable index, which must be a
// pointer/array/vector index. If there is no offset, life is simple, return
// the index.
unsigned IntPtrWidth = TD.getPointerSizeInBits();
unsigned IntPtrWidth = TD.getPointerSizeInBits(AS);
if (Offset == 0) {
// Cast to intptrty in case a truncation occurs. If an extension is needed,
// we don't need to bother extending: the extension won't affect where the
@@ -1552,7 +1554,8 @@ Instruction *InstCombiner::visitICmpInstWithCastAndCast(ICmpInst &ICI) {
// Turn icmp (ptrtoint x), (ptrtoint/c) into a compare of the input if the
// integer type is the same size as the pointer type.
if (TD && LHSCI->getOpcode() == Instruction::PtrToInt &&
TD->getPointerSizeInBits() ==
TD->getPointerSizeInBits(
cast<PtrToIntInst>(LHSCI)->getPointerAddressSpace()) ==
cast<IntegerType>(DestTy)->getBitWidth()) {
Value *RHSOp = 0;
if (Constant *RHSC = dyn_cast<Constant>(ICI.getOperand(1))) {