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Teach getOrEnforceKnownAlignment about address spaces 

llvm-svn: 187629
This commit is contained in:
Matt Arsenault 2013-08-01 22:42:18 +00:00
parent e4e6e9ed47
commit 87dc60761f
1 changed files with 5 additions and 4 deletions
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9
llvm/lib/Transforms/Utils/Local.cpp
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@ -928,12 +928,13 @@ static unsigned enforceKnownAlignment(Value *V, unsigned Align,
/// and it is more than the alignment of the ultimate object, see if we can
/// increase the alignment of the ultimate object, making this check succeed.
unsigned llvm::getOrEnforceKnownAlignment(Value *V, unsigned PrefAlign,
const DataLayout *TD) {
const DataLayout *DL) {
assert(V->getType()->isPointerTy() &&
"getOrEnforceKnownAlignment expects a pointer!");
unsigned BitWidth = TD ? TD->getPointerSizeInBits() : 64;
unsigned BitWidth = DL ? DL->getPointerTypeSizeInBits(V->getType()) : 64;
APInt KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
ComputeMaskedBits(V, KnownZero, KnownOne, TD);
ComputeMaskedBits(V, KnownZero, KnownOne, DL);
unsigned TrailZ = KnownZero.countTrailingOnes();
// Avoid trouble with ridiculously large TrailZ values, such as
@ -946,7 +947,7 @@ unsigned llvm::getOrEnforceKnownAlignment(Value *V, unsigned PrefAlign,
Align = std::min(Align, +Value::MaximumAlignment);
if (PrefAlign > Align)
Align = enforceKnownAlignment(V, Align, PrefAlign, TD);
Align = enforceKnownAlignment(V, Align, PrefAlign, DL);
// We don't need to make any adjustment.
return Align;