[llvm] r348253 - [X86] Remove unnecessary peekThroughEXTRACT_SUBVECTORs call.

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Tue Dec  4 04:21:43 2018
New Revision: 348253

URL: http://llvm.org/viewvc/llvm-project?rev=348253&view=rev
Log:
[X86] Remove unnecessary peekThroughEXTRACT_SUBVECTORs call.

The GetSplatValue/IsSplatVector call will call this anyhow and the later code is just for a v2i64 type so doesn't need it.

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=348253&r1=348252&r2=348253&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Tue Dec  4 04:21:43 2018
@@ -24092,8 +24092,6 @@ static SDValue LowerScalarVariableShift(
   unsigned X86OpcI = getTargetVShiftUniformOpcode(Opcode, false);
   unsigned X86OpcV = getTargetVShiftUniformOpcode(Opcode, true);
 
-  Amt = peekThroughEXTRACT_SUBVECTORs(Amt);
-
   if (SDValue BaseShAmt = GetSplatValue(Amt, dl, DAG)) {
     if (SupportedVectorShiftWithBaseAmnt(VT, Subtarget, Opcode)) {
       MVT EltVT = VT.getVectorElementType();