From: Chris Lattner <sabre@nondot.org>
Date: Wed, 6 Jun 2007 01:23:55 +0000 (+0000)
Subject: Fix PR1495 and CodeGen/X86/2007-06-05-LSR-Dominator.ll
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=b47f6124f4893c00573d1a5be56a6e4cf877faeb;p=oota-llvm.git

Fix PR1495 and CodeGen/X86/2007-06-05-LSR-Dominator.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37454 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 449cee3bda2..5c007551afb 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -560,11 +560,17 @@ Value *BasedUser::InsertCodeForBaseAtPosition(const SCEVHandle &NewBase,
                                     OperandValToReplace->getType());
 
   Value *Base = Rewriter.expandCodeFor(NewBase, BaseInsertPt);
+
+  // If we are inserting the base and imm values in the same block, make sure to
+  // adjust the IP position if insertion reused a result.
+  if (IP == BaseInsertPt)
+    IP = Rewriter.getInsertionPoint();
   
   // Always emit the immediate (if non-zero) into the same block as the user.
   SCEVHandle NewValSCEV = SCEVAddExpr::get(SCEVUnknown::get(Base), Imm);
   return Rewriter.expandCodeFor(NewValSCEV, IP,
                                 OperandValToReplace->getType());
+  
 }