[X86] Rename LowerScalarImmediateShift/LowerScalarVariableShift helpers. NFC.

Rename them to LowerShiftByScalarImmediate/LowerShiftByScalarVariable to make it easier to find them wrt LowerShift()

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 8308129..cdad73f 100644 (file)
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -28954,8 +28954,8 @@ static bool supportedVectorVarShift(MVT VT, const X86Subtarget &Subtarget,
   return (Opcode == ISD::SRA) ? AShift : LShift;
 }
 
-static SDValue LowerScalarImmediateShift(SDValue Op, SelectionDAG &DAG,
-                                         const X86Subtarget &Subtarget) {
+static SDValue LowerShiftByScalarImmediate(SDValue Op, SelectionDAG &DAG,
+                                           const X86Subtarget &Subtarget) {
   MVT VT = Op.getSimpleValueType();
   SDLoc dl(Op);
   SDValue R = Op.getOperand(0);
@@ -29085,8 +29085,8 @@ static SDValue LowerScalarImmediateShift(SDValue Op, SelectionDAG &DAG,
   return SDValue();
 }
 
-static SDValue LowerScalarVariableShift(SDValue Op, SelectionDAG &DAG,
-                                        const X86Subtarget &Subtarget) {
+static SDValue LowerShiftByScalarVariable(SDValue Op, SelectionDAG &DAG,
+                                          const X86Subtarget &Subtarget) {
   MVT VT = Op.getSimpleValueType();
   SDLoc dl(Op);
   SDValue R = Op.getOperand(0);
@@ -29244,10 +29244,10 @@ static SDValue LowerShift(SDValue Op, const X86Subtarget &Subtarget,
   assert(VT.isVector() && "Custom lowering only for vector shifts!");
   assert(Subtarget.hasSSE2() && "Only custom lower when we have SSE2!");
 
-  if (SDValue V = LowerScalarImmediateShift(Op, DAG, Subtarget))
+  if (SDValue V = LowerShiftByScalarImmediate(Op, DAG, Subtarget))
     return V;
 
-  if (SDValue V = LowerScalarVariableShift(Op, DAG, Subtarget))
+  if (SDValue V = LowerShiftByScalarVariable(Op, DAG, Subtarget))
     return V;
 
   if (supportedVectorVarShift(VT, Subtarget, Opc))
@@ -29999,7 +29999,7 @@ static SDValue LowerRotate(SDValue Op, const X86Subtarget &Subtarget,
   // ISD::ROT* uses modulo rotate amounts.
   if (SDValue BaseRotAmt = DAG.getSplatValue(Amt)) {
     // If the amount is a splat, perform the modulo BEFORE the splat,
-    // this helps LowerScalarVariableShift to remove the splat later.
+    // this helps LowerShiftByScalarVariable to remove the splat later.
     Amt = DAG.getNode(ISD::SCALAR_TO_VECTOR, DL, VT, BaseRotAmt);
     Amt = DAG.getNode(ISD::AND, DL, VT, Amt, AmtMask);
     Amt = DAG.getVectorShuffle(VT, DL, Amt, DAG.getUNDEF(VT),
@@ -52180,7 +52180,7 @@ static SDValue combineConcatVectorOps(const SDLoc &DL, MVT VT,
     case X86ISD::VSHLI:
     case X86ISD::VSRLI:
       // Special case: SHL/SRL AVX1 V4i64 by 32-bits can lower as a shuffle.
-      // TODO: Move this to LowerScalarImmediateShift?
+      // TODO: Move this to LowerShiftByScalarImmediate?
       if (VT == MVT::v4i64 && !Subtarget.hasInt256() &&
           llvm::all_of(Ops, [](SDValue Op) {
             return Op.getConstantOperandAPInt(1) == 32;