From 99d6b8ec95b86b3e66e2fea50d4114c844edc9dd Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 9 Feb 2004 00:20:55 +0000
Subject: [PATCH] The ConstantExpr::getCast call can cause a CPR to be
 generated.  If so, strip it off.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11213 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/LevelRaise.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/Transforms/LevelRaise.cpp b/lib/Transforms/LevelRaise.cpp
index c128688da2f..12268edbeda 100644
--- a/lib/Transforms/LevelRaise.cpp
+++ b/lib/Transforms/LevelRaise.cpp
@@ -539,6 +539,10 @@ bool RPR::PeepholeOptimize(BasicBlock *BB, BasicBlock::iterator &BI) {
         NewCast = new CastInst(CI->getCalledValue(), NewPFunTy,
                                CI->getCalledValue()->getName()+"_c",CI);
 
+      // Strip off unneeded CPR's.
+      if (ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(NewCast))
+        NewCast = CPR->getValue();
+
       // Create a new call instruction...
       CallInst *NewCall = new CallInst(NewCast,
                            std::vector<Value*>(CI->op_begin()+1, CI->op_end()));
-- 
2.34.1