[llvm] 5efb380 - [NFC] Undo AIX build compiler workaround

[Hubert Tong via llvm-commits]

Author: Hubert Tong
Date: 2022-06-13T17:00:33-04:00
New Revision: 5efb380c263ca91f2d545fbabc57cc9ee339e5d8

URL: https://github.com/llvm/llvm-project/commit/5efb380c263ca91f2d545fbabc57cc9ee339e5d8
DIFF: https://github.com/llvm/llvm-project/commit/5efb380c263ca91f2d545fbabc57cc9ee339e5d8.diff

LOG: [NFC] Undo AIX build compiler workaround

Removes the workaround from https://reviews.llvm.org/D98509#2732628 for
an AIX build compiler issue.

The AIX build compiler product that caused the issue has since been
fixed. Also, the AIX build compiler has been changed to one based on
LLVM.

Added: 
    

Modified: 
    llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index c6b7ca8c68c97..70a8fd89dfbbd 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -1657,15 +1657,10 @@ class LoopVectorizationCostModel {
   /// \return the maximized element count based on the targets vector
   /// registers and the loop trip-count, but limited to a maximum safe VF.
   /// This is a helper function of computeFeasibleMaxVF.
-  /// FIXME: MaxSafeVF is currently passed by reference to avoid some obscure
-  /// issue that occurred on one of the buildbots which cannot be reproduced
-  /// without having access to the properietary compiler (see comments on
-  /// D98509). The issue is currently under investigation and this workaround
-  /// will be removed as soon as possible.
   ElementCount getMaximizedVFForTarget(unsigned ConstTripCount,
                                        unsigned SmallestType,
                                        unsigned WidestType,
-                                       const ElementCount &MaxSafeVF,
+                                       ElementCount MaxSafeVF,
                                        bool FoldTailByMasking);
 
   /// \return the maximum legal scalable VF, based on the safe max number
@@ -5166,7 +5161,7 @@ LoopVectorizationCostModel::computeMaxVF(ElementCount UserVF, unsigned UserIC) {
 
 ElementCount LoopVectorizationCostModel::getMaximizedVFForTarget(
     unsigned ConstTripCount, unsigned SmallestType, unsigned WidestType,
-    const ElementCount &MaxSafeVF, bool FoldTailByMasking) {
+    ElementCount MaxSafeVF, bool FoldTailByMasking) {
   bool ComputeScalableMaxVF = MaxSafeVF.isScalable();
   TypeSize WidestRegister = TTI.getRegisterBitWidth(
       ComputeScalableMaxVF ? TargetTransformInfo::RGK_ScalableVector