Enable ODR uniquing of DITypes for ThinLTO backends
Summary:
This is a follow-on to apply Duncan's new DIType ODR uniquing from
r266549 and r266713 in more places.
When invoking ThinLTO backend compiles via clang (for a distributed
build), invoke enableDebugTypeODRUniquing() before parsing the module.
Reviewers: dexonsmith, joker.eph
Subscribers: llvm-commits, joker.eph
Differential Revision: http://reviews.llvm.org/D19264
llvm-svn: 266852
diff --git a/clang/lib/CodeGen/CodeGenAction.cpp b/clang/lib/CodeGen/CodeGenAction.cpp
index 9bdbacd..d280a3ea 100644
--- a/clang/lib/CodeGen/CodeGenAction.cpp
+++ b/clang/lib/CodeGen/CodeGenAction.cpp
@@ -794,6 +794,11 @@
if (Invalid)
return;
+ // For ThinLTO backend invocations, ensure that the context
+ // merges types based on ODR identifiers.
+ if (!CI.getCodeGenOpts().ThinLTOIndexFile.empty())
+ VMContext->enableDebugTypeODRUniquing();
+
llvm::SMDiagnostic Err;
TheModule = parseIR(MainFile->getMemBufferRef(), Err, *VMContext);
if (!TheModule) {