diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/InlineFunction.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/InlineFunction.cpp | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/Utils/InlineFunction.cpp b/llvm/lib/Transforms/Utils/InlineFunction.cpp index 0ac8fa5..3026342 100644 --- a/llvm/lib/Transforms/Utils/InlineFunction.cpp +++ b/llvm/lib/Transforms/Utils/InlineFunction.cpp @@ -921,14 +921,20 @@ void ScopedAliasMetadataDeepCloner::remap(ValueToValueMapTy &VMap) { if (!I) continue; + // Only update scopes when we find them in the map. If they are not, it is + // because we already handled that instruction before. This is faster than + // tracking which instructions we already updated. if (MDNode *M = I->getMetadata(LLVMContext::MD_alias_scope)) - I->setMetadata(LLVMContext::MD_alias_scope, MDMap[M]); + if (MDNode *MNew = MDMap.lookup(M)) + I->setMetadata(LLVMContext::MD_alias_scope, MNew); if (MDNode *M = I->getMetadata(LLVMContext::MD_noalias)) - I->setMetadata(LLVMContext::MD_noalias, MDMap[M]); + if (MDNode *MNew = MDMap.lookup(M)) + I->setMetadata(LLVMContext::MD_noalias, MNew); if (auto *Decl = dyn_cast<NoAliasScopeDeclInst>(I)) - Decl->setScopeList(MDMap[Decl->getScopeList()]); + if (MDNode *MNew = MDMap.lookup(Decl->getScopeList())) + Decl->setScopeList(MNew); } } |