[X86] Fix crash on assert of non-simple type after type-legalization
The function combineShuffleToVectorExtend in DAGCombine might generate an illegal typed node after "legalize types" phase, causing assertion on non-simple type to fail afterwards.
Adding a type check in case the combine is running after the type legalize pass.
Differential Revision: https://reviews.llvm.org/D37330
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312438 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed