[llvm] da4c7db - [X86] Rename matchShuffleAsByteRotate to matchShuffleAsElementRotate. NFC.

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2020-03-29T16:41:58+01:00
New Revision: da4c7db793aa71a1e59c31b346e975593c090232

URL: https://github.com/llvm/llvm-project/commit/da4c7db793aa71a1e59c31b346e975593c090232
DIFF: https://github.com/llvm/llvm-project/commit/da4c7db793aa71a1e59c31b346e975593c090232.diff

LOG: [X86] Rename matchShuffleAsByteRotate to matchShuffleAsElementRotate. NFC.

This was an inner helper function for the real matchShuffleAsByteRotate function, but it is more generic and is used directly for VALIGN lowering which doesn't work at the byte level.

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86ISelLowering.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index e0d9ee6e08a3..3bb9c68df782 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -11914,11 +11914,11 @@ static SDValue lowerShuffleAsBitRotate(const SDLoc &DL, MVT VT, SDValue V1,
   return DAG.getBitcast(VT, Rot);
 }
 
-/// Try to lower a vector shuffle as a byte rotation.
+/// Try to match a vector shuffle as an element rotation.
 ///
 /// This is used for support PALIGNR for SSSE3 or VALIGND/Q for AVX512.
-static int matchShuffleAsByteRotate(SDValue &V1, SDValue &V2,
-                                    ArrayRef<int> Mask) {
+static int matchShuffleAsElementRotate(SDValue &V1, SDValue &V2,
+                                       ArrayRef<int> Mask) {
   int NumElts = Mask.size();
 
   // We need to detect various ways of spelling a rotation:
@@ -12013,7 +12013,7 @@ static int matchShuffleAsByteRotate(MVT VT, SDValue &V1, SDValue &V2,
   if (!is128BitLaneRepeatedShuffleMask(VT, Mask, RepeatedMask))
     return -1;
 
-  int Rotation = matchShuffleAsByteRotate(V1, V2, RepeatedMask);
+  int Rotation = matchShuffleAsElementRotate(V1, V2, RepeatedMask);
   if (Rotation <= 0)
     return -1;
 
@@ -12093,7 +12093,7 @@ static SDValue lowerShuffleAsVALIGN(const SDLoc &DL, MVT VT, SDValue V1,
          && "VLX required for 128/256-bit vectors");
 
   SDValue Lo = V1, Hi = V2;
-  int Rotation = matchShuffleAsByteRotate(Lo, Hi, Mask);
+  int Rotation = matchShuffleAsElementRotate(Lo, Hi, Mask);
   if (Rotation <= 0)
     return SDValue();