commit 67894a3d02caa0b4628a942bef923907bbd97c47
author Gabor Greif <ggreif@gmail.com> Wed Apr 14 16:48:56 2010 +0000
committer Gabor Greif <ggreif@gmail.com> Wed Apr 14 16:48:56 2010 +0000
tree d166a7a6be6f352364454fc559e3ecf185f59359
parent de4c0a7da7cfa1693ad9e6e09969003b610af08a

performance: cache the dereferenced use_iterator

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101253 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Scalar/Reg2Mem.cpp

diff --git a/lib/Transforms/Scalar/Reg2Mem.cpp b/lib/Transforms/Scalar/Reg2Mem.cpp
index 7a6eec3..13222ac 100644
--- a/lib/Transforms/Scalar/Reg2Mem.cpp
+++ b/lib/Transforms/Scalar/Reg2Mem.cpp
@@ -46,10 +46,11 @@
    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;
     }