Add a non-exiting diagnostic handler for LTO.

This is in order to give LTO clients a chance to do some clean-up before
terminating the process.

llvm-svn: 247461

1 files changed, 8 insertions, 2 deletions

diff --git a/llvm/lib/LTO/LTOCodeGenerator.cpp b/llvm/lib/LTO/LTOCodeGenerator.cpp
index 51515b0de50..5dda8292bd6 100644
--- a/llvm/lib/LTO/LTOCodeGenerator.cpp
+++ b/llvm/lib/LTO/LTOCodeGenerator.cpp
@@ -64,17 +64,23 @@ const char* LTOCodeGenerator::getVersionString() {
 #endif
 }
 
+static void handleLTODiagnostic(const DiagnosticInfo &DI) {
+  DiagnosticPrinterRawOStream DP(errs());                                
+  DI.print(DP);                                                          
+  errs() << "\n";
+}
+
 LTOCodeGenerator::LTOCodeGenerator()
     : Context(getGlobalContext()),
       MergedModule(new Module("ld-temp.o", Context)),
-      IRLinker(MergedModule.get()) {
+      IRLinker(MergedModule.get(), handleLTODiagnostic) {
   initializeLTOPasses();
 }
 
 LTOCodeGenerator::LTOCodeGenerator(std::unique_ptr<LLVMContext> Context)
     : OwnedContext(std::move(Context)), Context(*OwnedContext),
       MergedModule(new Module("ld-temp.o", *OwnedContext)),
-      IRLinker(MergedModule.get()) {
+      IRLinker(MergedModule.get(), handleLTODiagnostic) {
   initializeLTOPasses();
 }