[PATCH] D26877: Minor fixes in Loop Strength Reduction

[Evgeny Stupachenko via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rG0c4300fac7e0: Fix LSR best register search algorithm. (authored by evstupac).
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

Changed prior to commit:
  https://reviews.llvm.org/D26877?vs=78784&id=223554#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D26877/new/

https://reviews.llvm.org/D26877

Files:
  llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp


Index: llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
===================================================================
--- llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -4178,9 +4178,10 @@
     for (const SCEV *Reg : RegUses) {
       if (Taken.count(Reg))
         continue;
-      if (!Best)
+      if (!Best) {
         Best = Reg;
-      else {
+        BestNum = RegUses.getUsedByIndices(Reg).count();
+      } else {
         unsigned Count = RegUses.getUsedByIndices(Reg).count();
         if (Count > BestNum) {
           Best = Reg;


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