diff options
Diffstat (limited to 'lib/Linker/IRMover.cpp')
| -rw-r--r-- | lib/Linker/IRMover.cpp | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/lib/Linker/IRMover.cpp b/lib/Linker/IRMover.cpp index 4935868c00f4..09c67bc47863 100644 --- a/lib/Linker/IRMover.cpp +++ b/lib/Linker/IRMover.cpp @@ -694,6 +694,14 @@ void IRLinker::computeTypeMapping() { if (!ST->hasName()) continue; + if (TypeMap.DstStructTypesSet.hasType(ST)) { + // This is actually a type from the destination module. + // getIdentifiedStructTypes() can have found it by walking debug info + // metadata nodes, some of which get linked by name when ODR Type Uniquing + // is enabled on the Context, from the source to the destination module. + continue; + } + // Check to see if there is a dot in the name followed by a digit. size_t DotPos = ST->getName().rfind('.'); if (DotPos == 0 || DotPos == StringRef::npos || @@ -1336,13 +1344,19 @@ bool IRMover::IdentifiedStructTypeSet::hasType(StructType *Ty) { IRMover::IRMover(Module &M) : Composite(M) { TypeFinder StructTypes; - StructTypes.run(M, true); + StructTypes.run(M, /* OnlyNamed */ false); for (StructType *Ty : StructTypes) { if (Ty->isOpaque()) IdentifiedStructTypes.addOpaque(Ty); else IdentifiedStructTypes.addNonOpaque(Ty); } + // Self-map metadatas in the destination module. This is needed when + // DebugTypeODRUniquing is enabled on the LLVMContext, since metadata in the + // destination module may be reached from the source module. + for (auto *MD : StructTypes.getVisitedMetadata()) { + SharedMDs[MD].reset(const_cast<MDNode *>(MD)); + } } Error IRMover::move( |