From e516aa1127f17f565f86c367eeda4cfead2e24cf Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Wed, 5 Mar 2008 00:36:59 +0000
Subject: [PATCH] Skip functions that return multiple values.

llvm-svn: 47924
---
 llvm/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/llvm/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp b/llvm/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
index f9aaa2366661..5d151ed70a0a 100644
--- a/llvm/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
+++ b/llvm/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
@@ -50,6 +50,11 @@ bool UnifyFunctionExitNodes::runOnFunction(Function &F) {
   // Loop over all of the blocks in a function, tracking all of the blocks that
   // return.
   //
+
+  // PHINode can not handle aggregates returned by multiple value ret
+  // instructions. TODO: Handle each return value independently.
+  if (isa<StructType>(F.getReturnType()))
+    return false;
   std::vector<BasicBlock*> ReturningBlocks;
   std::vector<BasicBlock*> UnwindingBlocks;
   std::vector<BasicBlock*> UnreachableBlocks;