[PATCH] D27911: [LoopUnroll] Keep UP.Count when considering complete unroll

[Z. Zheng via Phabricator via llvm-commits]

zzheng updated this revision to Diff 83759.
zzheng added a comment.

Moved UP.Count = FullUnrollTripCount under condition as suggested by Evgeny.


Repository:
  rL LLVM

https://reviews.llvm.org/D27911

Files:
  lib/Transforms/Scalar/LoopUnrollPass.cpp


Index: lib/Transforms/Scalar/LoopUnrollPass.cpp
===================================================================
--- lib/Transforms/Scalar/LoopUnrollPass.cpp
+++ lib/Transforms/Scalar/LoopUnrollPass.cpp
@@ -742,8 +742,8 @@
   assert((ExactTripCount == 0 || MaxTripCount == 0) &&
          "ExtractTripCound and MaxTripCount cannot both be non zero.");
   unsigned FullUnrollTripCount = ExactTripCount ? ExactTripCount : MaxTripCount;
-  UP.Count = FullUnrollTripCount;
   if (FullUnrollTripCount && FullUnrollTripCount <= UP.FullUnrollMaxCount) {
+    UP.Count = FullUnrollTripCount;
     // When computing the unrolled size, note that BEInsns are not replicated
     // like the rest of the loop body.
     if (getUnrolledLoopSize(LoopSize, UP) < UP.Threshold) {


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