[X86][AVX512] Change VCVTSS2SD and VCVTSD2SS node types to keep consistency between VEX/EVEX versions.

AVX versions of the converts work on f32/f64 types, while AVX512 version work on vectors.

Differential Revision: https://reviews.llvm.org/D29988



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295940 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed