Remove alignment from ctors/dtors lists in an attempt to placate LTO.

llvm-svn: 287458

1 files changed, 9 insertions, 3 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index c931bbff063..869f0097c7f 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -756,9 +756,15 @@ void CodeGenModule::EmitCtorList(CtorList &Fns, const char *GlobalName) {
     ctors.add(ctor.finish());
   }
 
-  (void) ctors.finishAndCreateGlobal(GlobalName, getPointerAlign(),
-                                     /*constant*/ false,
-                                     llvm::GlobalValue::AppendingLinkage);
+  auto list =
+    ctors.finishAndCreateGlobal(GlobalName, getPointerAlign(),
+                                /*constant*/ false,
+                                llvm::GlobalValue::AppendingLinkage);
+
+  // The LTO linker doesn't seem to like it when we set an alignment
+  // on appending variables.  Take it off as a workaround.
+  list->setAlignment(0);
+
   Fns.clear();
 }