From c08e5df836894a66efd6e945e7baa0faff582e5b Mon Sep 17 00:00:00 2001
From: Gabor Greif <ggreif@gmail.com>
Date: Wed, 14 Apr 2010 16:48:56 +0000
Subject: performance: cache the dereferenced use_iterator

llvm-svn: 101253
---
 llvm/lib/Transforms/Scalar/Reg2Mem.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'llvm/lib/Transforms/Scalar/Reg2Mem.cpp')

diff --git a/llvm/lib/Transforms/Scalar/Reg2Mem.cpp b/llvm/lib/Transforms/Scalar/Reg2Mem.cpp
index 7a6eec3d46b..13222ac2200 100644
--- a/llvm/lib/Transforms/Scalar/Reg2Mem.cpp
+++ b/llvm/lib/Transforms/Scalar/Reg2Mem.cpp
@@ -46,10 +46,11 @@ namespace {
    bool valueEscapes(const Instruction *Inst) const {
      const BasicBlock *BB = Inst->getParent();
       for (Value::const_use_iterator UI = Inst->use_begin(),E = Inst->use_end();
-           UI != E; ++UI)
-        if (cast<Instruction>(*UI)->getParent() != BB ||
-            isa<PHINode>(*UI))
+           UI != E; ++UI) {
+        const Instruction *I = cast<Instruction>(*UI);
+        if (I->getParent() != BB || isa<PHINode>(I))
           return true;
+      }
       return false;
     }
 
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