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[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.

llvm-svn: 348253
This commit is contained in:
Simon Pilgrim 2018-12-04 12:21:43 +00:00
parent 219c0fae5c
commit b1d6db7693
1 changed files with 0 additions and 2 deletions
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2
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -24092,8 +24092,6 @@ static SDValue LowerScalarVariableShift(SDValue Op, SelectionDAG &DAG,
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();