[X86] Remove all the vector NOP bitcast patterns. Use a few lines of code in the Select method in X86ISelDAGToDAG.cpp instead.
There are a lot of permutations of types here generating a lot of patterns in the isel table. It's more efficient to just ReplaceUses and RemoveDeadNode from the Select function.
The test changes are because we have a some shuffle patterns that have a bitcast as their root node. But the behavior is identical to another instruction whose pattern doesn't start with a bitcast. So this isn't a functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@338824 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed