[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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@326174 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index f75b55d..170a307 100644 (file)
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -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::createAddRecFromPHI(PHINode *PN) {
     // 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);