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Add in the first iteration of support for llvm/clang/lldb to allow variable per address space pointer sizes to be optimized correctly.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165726 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Micah Villmow
2012-10-11 17:21:41 +00:00
parent ebba49395c
commit f3840d2c16
40 changed files with 188 additions and 109 deletions
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10
lib/Transforms/InstCombine/InstCombineCasts.cpp
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@ -1293,15 +1293,16 @@ Instruction *InstCombiner::visitIntToPtr(IntToPtrInst &CI) {
// If the source integer type is not the intptr_t type for this target, do a
// trunc or zext to the intptr_t type, then inttoptr of it. This allows the
// cast to be exposed to other transforms.
unsigned AS = CI.getAddressSpace();
if (TD) {
if (CI.getOperand(0)->getType()->getScalarSizeInBits() >
TD->getPointerSizeInBits()) {
TD->getPointerSizeInBits(AS)) {
Value *P = Builder->CreateTrunc(CI.getOperand(0),
TD->getIntPtrType(CI.getContext()));
return new IntToPtrInst(P, CI.getType());
}
if (CI.getOperand(0)->getType()->getScalarSizeInBits() <
TD->getPointerSizeInBits()) {
TD->getPointerSizeInBits(AS)) {
Value *P = Builder->CreateZExt(CI.getOperand(0),
TD->getIntPtrType(CI.getContext()));
return new IntToPtrInst(P, CI.getType());
@ -1368,13 +1369,14 @@ Instruction *InstCombiner::visitPtrToInt(PtrToIntInst &CI) {
// If the destination integer type is not the intptr_t type for this target,
// do a ptrtoint to intptr_t then do a trunc or zext. This allows the cast
// to be exposed to other transforms.
unsigned AS = CI.getPointerAddressSpace();
if (TD) {
if (CI.getType()->getScalarSizeInBits() < TD->getPointerSizeInBits()) {
if (CI.getType()->getScalarSizeInBits() < TD->getPointerSizeInBits(AS)) {
Value *P = Builder->CreatePtrToInt(CI.getOperand(0),
TD->getIntPtrType(CI.getContext()));
return new TruncInst(P, CI.getType());
}
if (CI.getType()->getScalarSizeInBits() > TD->getPointerSizeInBits()) {
if (CI.getType()->getScalarSizeInBits() > TD->getPointerSizeInBits(AS)) {
Value *P = Builder->CreatePtrToInt(CI.getOperand(0),
TD->getIntPtrType(CI.getContext()));
return new ZExtInst(P, CI.getType());