From 7ea68536b588de524cd92f3fc593ddc1d2cfc30c Mon Sep 17 00:00:00 2001
From: Nick Lewycky <nicholas@mxc.ca>
Date: Sat, 6 Jun 2009 23:13:08 +0000
Subject: Don't crash on multiple return value with no obvious inserted value.
 Fixes PR4314.

llvm-svn: 73007
---
 llvm/lib/Transforms/Scalar/SCCP.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'llvm/lib/Transforms/Scalar/SCCP.cpp')

diff --git a/llvm/lib/Transforms/Scalar/SCCP.cpp b/llvm/lib/Transforms/Scalar/SCCP.cpp
index d73519c04e3..3deee547729 100644
--- a/llvm/lib/Transforms/Scalar/SCCP.cpp
+++ b/llvm/lib/Transforms/Scalar/SCCP.cpp
@@ -639,8 +639,8 @@ void SCCPSolver::visitReturnInst(ReturnInst &I) {
       DenseMap<std::pair<Function*, unsigned>, LatticeVal>::iterator
         It = TrackedMultipleRetVals.find(std::make_pair(F, i));
       if (It == TrackedMultipleRetVals.end()) break;
-      Value *Val = FindInsertedValue(I.getOperand(0), i);
-      mergeInValue(It->second, F, getValueState(Val));
+      if (Value *Val = FindInsertedValue(I.getOperand(0), i))
+        mergeInValue(It->second, F, getValueState(Val));
     }
   }
 }
-- 
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