diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp')
-rw-r--r-- | lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp index 82e97f40fc..d842fabae2 100644 --- a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp +++ b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp @@ -74,7 +74,12 @@ void FunctionLoweringInfo::set(const Function &fn, MachineFunction &mf) { // them. Function::const_iterator BB = Fn->begin(), EB = Fn->end(); for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I) - if (const AllocaInst *AI = dyn_cast<AllocaInst>(I)) + if (const AllocaInst *AI = dyn_cast<AllocaInst>(I)) { + // Don't fold inalloca allocas or other dynamic allocas into the initial + // stack frame allocation, even if they are in the entry block. + if (!AI->isStaticAlloca()) + continue; + if (const ConstantInt *CUI = dyn_cast<ConstantInt>(AI->getArraySize())) { Type *Ty = AI->getAllocatedType(); uint64_t TySize = TLI->getDataLayout()->getTypeAllocSize(Ty); @@ -88,6 +93,7 @@ void FunctionLoweringInfo::set(const Function &fn, MachineFunction &mf) { StaticAllocaMap[AI] = MF->getFrameInfo()->CreateStackObject(TySize, Align, false, AI); } + } for (; BB != EB; ++BB) for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); |