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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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3
lib/Transforms/Utils/Local.cpp
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@ -806,7 +806,8 @@ unsigned llvm::getOrEnforceKnownAlignment(Value *V, unsigned PrefAlign,
const DataLayout *TD) {
assert(V->getType()->isPointerTy() &&
"getOrEnforceKnownAlignment expects a pointer!");
unsigned BitWidth = TD ? TD->getPointerSizeInBits() : 64;
unsigned AS = cast<PointerType>(V->getType())->getAddressSpace();
unsigned BitWidth = TD ? TD->getPointerSizeInBits(AS) : 64;
APInt KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
ComputeMaskedBits(V, KnownZero, KnownOne, TD);
unsigned TrailZ = KnownZero.countTrailingOnes();