diff options
Diffstat (limited to 'llvm/lib/Linker/IRMover.cpp')
| -rw-r--r-- | llvm/lib/Linker/IRMover.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Linker/IRMover.cpp b/llvm/lib/Linker/IRMover.cpp index f7170e714b9..6863a895cb1 100644 --- a/llvm/lib/Linker/IRMover.cpp +++ b/llvm/lib/Linker/IRMover.cpp @@ -95,6 +95,12 @@ void TypeMapTy::addTypeMapping(Type *DstTy, Type *SrcTy) { for (StructType *Ty : SpeculativeDstOpaqueTypes) DstResolvedOpaqueTypes.erase(Ty); } else { + // SrcTy and DstTy are recursively ismorphic. We clear names of SrcTy + // and all its descendants to lower amount of renaming in LLVM context + // Renaming occurs because we load all source modules to the same context + // and declaration with existing name gets renamed (i.e Foo -> Foo.42). + // As a result we may get several different types in the destination + // module, which are in fact the same. for (Type *Ty : SpeculativeTypes) if (auto *STy = dyn_cast<StructType>(Ty)) if (STy->hasName()) |
