diff options
Diffstat (limited to 'lib/Transforms/IPO/FunctionAttrs.cpp')
| -rw-r--r-- | lib/Transforms/IPO/FunctionAttrs.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Transforms/IPO/FunctionAttrs.cpp b/lib/Transforms/IPO/FunctionAttrs.cpp index fcdc5f18f1..8bdf5d75da 100644 --- a/lib/Transforms/IPO/FunctionAttrs.cpp +++ b/lib/Transforms/IPO/FunctionAttrs.cpp @@ -195,6 +195,13 @@ bool FunctionAttrs::AddReadAttrs(const CallGraphSCC &SCC) { if (AA->pointsToConstantMemory(Loc, /*OrLocal=*/true)) continue; } + } else if (VAArgInst *VI = dyn_cast<VAArgInst>(I)) { + // Ignore vaargs on local memory. + AliasAnalysis::Location Loc(VI->getPointerOperand(), + AliasAnalysis::UnknownSize, + VI->getMetadata(LLVMContext::MD_tbaa)); + if (AA->pointsToConstantMemory(Loc, /*OrLocal=*/true)) + continue; } // Any remaining instructions need to be taken seriously! Check if they |