[PATCH] D111538: [X86] Prefer VEX encoding in X86 assembler.

[Pengfei Wang via Phabricator via llvm-commits]

pengfei added inline comments.


================
Comment at: llvm/utils/TableGen/AsmMatcherEmitter.cpp:624
     for (unsigned i = 0, e = AsmOperands.size(); i != e; ++i) {
       if (*AsmOperands[i].Class < *RHS.AsmOperands[i].Class)
         return true;
----------------
I have a question here. AVX512 instructions have larger register class, e.g. VR128X vs. VR128. Why doesn't (Could) the code work for them?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D111538/new/

https://reviews.llvm.org/D111538