[llvm] r326174 - [SCEV] Cleanup SCEVInitRewriter. NFC.

[Serguei Katkov via llvm-commits]

Author: skatkov
Date: Mon Feb 26 22:39:31 2018
New Revision: 326174

URL: http://llvm.org/viewvc/llvm-project?rev=326174&view=rev
Log:
[SCEV] Cleanup SCEVInitRewriter. NFC.

Set default value for IgnoreOtherLoops of SCEVInitRewriter::rewrite to true
to be consistent with SCEVPostIncRewriter which does not have this parameter
but behaves as it would be true.

This is follow up for rL326067.

Modified:
    llvm/trunk/lib/Analysis/ScalarEvolution.cpp

Modified: llvm/trunk/lib/Analysis/ScalarEvolution.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/ScalarEvolution.cpp?rev=326174&r1=326173&r2=326174&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/ScalarEvolution.cpp (original)
+++ llvm/trunk/lib/Analysis/ScalarEvolution.cpp Mon Feb 26 22:39:31 2018
@@ -4093,7 +4093,7 @@ namespace {
 class SCEVInitRewriter : public SCEVRewriteVisitor<SCEVInitRewriter> {
 public:
   static const SCEV *rewrite(const SCEV *S, const Loop *L, ScalarEvolution &SE,
-                             bool IgnoreOtherLoops = false) {
+                             bool IgnoreOtherLoops = true) {
     SCEVInitRewriter Rewriter(L, SE);
     const SCEV *Result = Rewriter.visit(S);
     if (Rewriter.hasSeenLoopVariantSCEVUnknown())
@@ -5020,7 +5020,7 @@ const SCEV *ScalarEvolution::createAddRe
     // by one iteration:
     //   PHI(f(0), f({1,+,1})) --> f({0,+,1})
     const SCEV *Shifted = SCEVShiftRewriter::rewrite(BEValue, L, *this);
-    const SCEV *Start = SCEVInitRewriter::rewrite(Shifted, L, *this);
+    const SCEV *Start = SCEVInitRewriter::rewrite(Shifted, L, *this, false);
     if (Shifted != getCouldNotCompute() &&
         Start != getCouldNotCompute()) {
       const SCEV *StartVal = getSCEV(StartValueV);