[PATCH] D25002: [AVX-512] Support spills of XMM16-31 and YMM16-31 when VLX isn't available.

[Craig Topper via llvm-commits]

craig.topper created this revision.
craig.topper added a reviewer: delena.
craig.topper added a subscriber: llvm-commits.

This adds new pseudo instructions that can be selected during register allocation to represent loads and stores of XMM/YMM registers when AVX512F is available, but VLX isn't. They will be expanded after register allocation to either VEX encoded moves if the register turns out to be XMM0-15/YMM0-15. Otherwise either an EVEX VEXTRACT or VBROADCAST will be used.

Should fix PR29112.

https://reviews.llvm.org/D25002

Files:
  lib/Target/X86/X86InstrAVX512.td
  lib/Target/X86/X86InstrInfo.cpp

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