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| author | Artur Pilipenko <apilipenko@azulsystems.com> | 2016-04-27 10:42:29 +0000 |
|---|---|---|
| committer | Artur Pilipenko <apilipenko@azulsystems.com> | 2016-04-27 10:42:29 +0000 |
| commit | c97eac6555a42d50ffa0bcc7795bad50af0aacf7 (patch) | |
| tree | ceccc17cd4f6bdea372b01211a5419cbd1233beb /llvm/lib/IR/Value.cpp | |
| parent | 2f13da3ea4097afec3dff79522e80119e0a84e25 (diff) | |
| download | bcm5719-llvm-c97eac6555a42d50ffa0bcc7795bad50af0aacf7.tar.gz bcm5719-llvm-c97eac6555a42d50ffa0bcc7795bad50af0aacf7.zip | |
Use DL preferred alignment for alloca in Value::getPointerAlignment
Teach Value::getPointerAlignment that allocas with no explicit alignment are aligned to preferred alignment of the allocated type.
Reviewed By: hfinkel
Differential Revision: http://reviews.llvm.org/D17569
llvm-svn: 267689
Diffstat (limited to 'llvm/lib/IR/Value.cpp')
| -rw-r--r-- | llvm/lib/IR/Value.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/llvm/lib/IR/Value.cpp b/llvm/lib/IR/Value.cpp index cc20c4855f2..08b4936e702 100644 --- a/llvm/lib/IR/Value.cpp +++ b/llvm/lib/IR/Value.cpp @@ -554,9 +554,14 @@ unsigned Value::getPointerAlignment(const DataLayout &DL) const { if (EltTy->isSized()) Align = DL.getABITypeAlignment(EltTy); } - } else if (const AllocaInst *AI = dyn_cast<AllocaInst>(this)) + } else if (const AllocaInst *AI = dyn_cast<AllocaInst>(this)) { Align = AI->getAlignment(); - else if (auto CS = ImmutableCallSite(this)) + if (Align == 0) { + Type *AllocatedType = AI->getAllocatedType(); + if (AllocatedType->isSized()) + Align = DL.getPrefTypeAlignment(AllocatedType); + } + } else if (auto CS = ImmutableCallSite(this)) Align = CS.getAttributes().getParamAlignment(AttributeSet::ReturnIndex); else if (const LoadInst *LI = dyn_cast<LoadInst>(this)) if (MDNode *MD = LI->getMetadata(LLVMContext::MD_align)) { |
