Link the type of aliases.

They are not more or less "well typed" than GlobalVariables.

llvm-svn: 222725

1 files changed, 5 insertions, 2 deletions

diff --git a/llvm/lib/Linker/LinkModules.cpp b/llvm/lib/Linker/LinkModules.cpp
index 9664e3f5618..a8dc324daa2 100644
--- a/llvm/lib/Linker/LinkModules.cpp
+++ b/llvm/lib/Linker/LinkModules.cpp
@@ -786,6 +786,11 @@ void ModuleLinker::computeTypeMapping() {
       TypeMap.addTypeMapping(DGV->getType(), SGV.getType());
   }
 
+  for (GlobalValue &SGV : SrcM->aliases()) {
+    if (GlobalValue *DGV = getLinkedToGlobal(&SGV))
+      TypeMap.addTypeMapping(DGV->getType(), SGV.getType());
+  }
+
   // Incorporate types by name, scanning all the types in the source module.
   // At this point, the destination module may have a type "%foo = { i32 }" for
   // example.  When the source module got loaded into the same LLVMContext, if
@@ -829,8 +834,6 @@ void ModuleLinker::computeTypeMapping() {
         TypeMap.addTypeMapping(DST, ST);
   }
 
-  // Don't bother incorporating aliases, they aren't generally typed well.
-
   // Now that we have discovered all of the type equivalences, get a body for
   // any 'opaque' types in the dest module that are now resolved.
   TypeMap.linkDefinedTypeBodies();