[llvm] r247513 - [X86] Renamed lowerVectorShuffleAsUnpack NFCI.

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Sat Sep 12 13:26:47 2015
New Revision: 247513

URL: http://llvm.org/viewvc/llvm-project?rev=247513&view=rev
Log:
[X86] Renamed lowerVectorShuffleAsUnpack NFCI.

Renamed to lowerVectorShuffleAsPermuteAndUnpack to make it clear that it lowers to more than just a UNPCK instruction.

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

Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=247513&r1=247512&r2=247513&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Sat Sep 12 13:26:47 2015
@@ -7867,9 +7867,10 @@ static SDValue lowerVectorShuffleAsInser
 /// because for floating point vectors we have a generalized SHUFPS lowering
 /// strategy that handles everything that doesn't *exactly* match an unpack,
 /// making this clever lowering unnecessary.
-static SDValue lowerVectorShuffleAsUnpack(SDLoc DL, MVT VT, SDValue V1,
-                                          SDValue V2, ArrayRef<int> Mask,
-                                          SelectionDAG &DAG) {
+static SDValue lowerVectorShuffleAsPermuteAndUnpack(SDLoc DL, MVT VT,
+                                                    SDValue V1, SDValue V2,
+                                                    ArrayRef<int> Mask,
+                                                    SelectionDAG &DAG) {
   assert(!VT.isFloatingPoint() &&
          "This routine only supports integer vectors.");
   assert(!isSingleInputShuffleMask(Mask) &&
@@ -8456,8 +8457,8 @@ static SDValue lowerV4I32VectorShuffle(S
                                                       Mask, DAG);
 
   // Try to lower by permuting the inputs into an unpack instruction.
-  if (SDValue Unpack =
-          lowerVectorShuffleAsUnpack(DL, MVT::v4i32, V1, V2, Mask, DAG))
+  if (SDValue Unpack = lowerVectorShuffleAsPermuteAndUnpack(DL, MVT::v4i32, V1,
+                                                            V2, Mask, DAG))
     return Unpack;
 
   // We implement this with SHUFPS because it can blend from two vectors.
@@ -9085,8 +9086,8 @@ static SDValue lowerV8I16VectorShuffle(S
           lowerVectorShuffleAsBitBlend(DL, MVT::v8i16, V1, V2, Mask, DAG))
     return BitBlend;
 
-  if (SDValue Unpack =
-          lowerVectorShuffleAsUnpack(DL, MVT::v8i16, V1, V2, Mask, DAG))
+  if (SDValue Unpack = lowerVectorShuffleAsPermuteAndUnpack(DL, MVT::v8i16, V1,
+                                                            V2, Mask, DAG))
     return Unpack;
 
   // If we can't directly blend but can use PSHUFB, that will be better as it
@@ -9363,8 +9364,8 @@ static SDValue lowerV16I8VectorShuffle(S
       // FIXME: It might be worth trying to detect if the unpack-feeding
       // shuffles will both be pshufb, in which case we shouldn't bother with
       // this.
-      if (SDValue Unpack =
-              lowerVectorShuffleAsUnpack(DL, MVT::v16i8, V1, V2, Mask, DAG))
+      if (SDValue Unpack = lowerVectorShuffleAsPermuteAndUnpack(
+              DL, MVT::v16i8, V1, V2, Mask, DAG))
         return Unpack;
     }