[PATCH] D80608: [llvm-mc] Make the suffix matcher more accurate.

[Pengfei Wang via Phabricator via llvm-commits]

pengfei created this revision.
pengfei added reviewers: skan, craig.topper, MaskRay, LuoYuanke.
Herald added subscribers: llvm-commits, lebedev.ri, gbedwell, hiraditya.
Herald added a reviewer: andreadb.
Herald added a reviewer: lebedev.ri.
Herald added a project: LLVM.

Some instruction like VPMULDQ is NOT the variant of VPMULD but a new one
So we should make sure the suffix matcher only works for memory variant
that has the same size with the suffix.
Currently we only check for SSE/AVX* instructions, because many legacy
instructions didn't declare the alias instructions of their variants.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D80608

Files:
  llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp
  llvm/lib/Target/X86/AsmParser/X86Operand.h
  llvm/test/MC/X86/avx512-err.s
  llvm/test/tools/llvm-mca/X86/BdVer2/dependent-pmuld-paddd.s
  llvm/test/tools/llvm-mca/X86/BtVer2/dependent-pmuld-paddd.s

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