From 1faa88280edb3eec934dcbd4a033b2162e01274f Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Thu, 24 Jun 2010 16:33:38 +0000
Subject: [PATCH] Make the trunc code consistent with the zext and sext code in
 its handling of pointer types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106757 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Analysis/ScalarEvolution.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index 2a18ab449a1..24354d40282 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -822,7 +822,8 @@ const SCEV *ScalarEvolution::getTruncateExpr(const SCEV *Op,
   // Fold if the operand is constant.
   if (const SCEVConstant *SC = dyn_cast<SCEVConstant>(Op))
     return getConstant(
-      cast<ConstantInt>(ConstantExpr::getTrunc(SC->getValue(), Ty)));
+      cast<ConstantInt>(ConstantExpr::getTrunc(SC->getValue(),
+                                               getEffectiveSCEVType(Ty))));
 
   // trunc(trunc(x)) --> trunc(x)
   if (const SCEVTruncateExpr *ST = dyn_cast<SCEVTruncateExpr>(Op))