1 files changed, 5 insertions, 1 deletions
diff --git a/lib/CodeGen/CGCall.cpp b/lib/CodeGen/CGCall.cpp
index d2ad5dc887..e3b93a3f45 100644
--- a/lib/CodeGen/CGCall.cpp
+++ b/lib/CodeGen/CGCall.cpp
@@ -954,9 +954,13 @@ void CodeGenFunction::EmitFunctionProlog(const CGFunctionInfo &FI,
         if (Arg->getType().isRestrictQualified())
           AI->addAttr(llvm::Attribute::NoAlias);
 
+        // Ensure the argument is the correct type.
+        if (V->getType() != ArgI.getCoerceToType())
+          V = Builder.CreateBitCast(V, ArgI.getCoerceToType());
+
         if (isPromoted)
           V = emitArgumentDemotion(*this, Arg, V);
-
+        
         EmitParmDecl(*Arg, V, ArgNo);
         break;
       }