From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 9 Jun 2006 00:12:42 +0000 (+0000)
Subject: RewriteExpr, either the new PHI node of induction variable or the
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=86c75d31133319a88216c1b1cd26a789e4023000;p=oota-llvm.git

RewriteExpr, either the new PHI node of induction variable or the
post-increment value, should be first cast to the appropriated type (to the
type of the common expr). Otherwise, the rewrite of a use based on (common +
iv) may end up with an incorrect type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28735 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index d3ac797651f..6e4460b509e 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -1074,6 +1074,9 @@ void LoopStrengthReduce::StrengthReduceStridedIVUsers(const SCEVHandle &Stride,
         if (L->contains(User.Inst->getParent()))
           User.Inst->moveBefore(LatchBlock->getTerminator());
       }
+      if (RewriteOp->getType() != ReplacedTy)
+        RewriteOp = SCEVExpander::InsertCastOfTo(RewriteOp, ReplacedTy);
+
       SCEVHandle RewriteExpr = SCEVUnknown::get(RewriteOp);
 
       // Clear the SCEVExpander's expression map so that we are guaranteed