diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Analysis/IPA/InlineCost.cpp | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/llvm/lib/Analysis/IPA/InlineCost.cpp b/llvm/lib/Analysis/IPA/InlineCost.cpp index 8dafc1c1c61..a803f8c3bf9 100644 --- a/llvm/lib/Analysis/IPA/InlineCost.cpp +++ b/llvm/lib/Analysis/IPA/InlineCost.cpp @@ -287,8 +287,17 @@ bool CallAnalyzer::accumulateGEPOffset(GEPOperator &GEP, APInt &Offset) { } bool CallAnalyzer::visitAlloca(AllocaInst &I) { - // FIXME: Check whether inlining will turn a dynamic alloca into a static + // Check whether inlining will turn a dynamic alloca into a static // alloca, and handle that case. + if (I.isArrayAllocation()) { + if (Constant *Size = SimplifiedValues.lookup(I.getArraySize())) { + ConstantInt *AllocSize = dyn_cast<ConstantInt>(Size); + assert(AllocSize && "Allocation size not a constant int?"); + Type *Ty = I.getAllocatedType(); + AllocatedSize += Ty->getPrimitiveSizeInBits() * AllocSize->getZExtValue(); + return Base::visitAlloca(I); + } + } // Accumulate the allocated size. if (I.isStaticAlloca()) { |
