the blend that is matched by this are "used" in any sense, and so any
build_vector or other nodes feeding these will already drop other lanes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217855
91177308-0d34-0410-b5e6-
96231b3b80d8
VT == MVT::v4f64) &&
"Unknown vector type encountered!");
- // FIXME: Munge the inputs through no-op shuffles that drop the undef lanes to
- // allow nuking any instructions that feed only those lanes.
-
return DAG.getNode(X86ISD::ADDSUB, DL, VT, LHS, RHS);
}