[llvm] [LLVM][CodeGen] Remove failure cases when widening EXTRACT/INSERT_SUBVECTOR. (PR #162308)

[Paul Walker via llvm-commits]

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@@ -7447,9 +7469,7 @@ SDValue DAGTypeLegalizer::WidenVecOp_INSERT_SUBVECTOR(SDNode *N) {
   SDValue InVec = N->getOperand(0);
 
   EVT OrigVT = SubVec.getValueType();
-  if (getTypeAction(SubVec.getValueType()) == TargetLowering::TypeWidenVector)
-    SubVec = GetWidenedVector(SubVec);
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paulwalker-arm wrote:

This change is not necessary but I don't see any way the if statement can be false given by this point the result (and thus first operand) should be legal.

https://github.com/llvm/llvm-project/pull/162308