[all-commits] [llvm/llvm-project] 1c6746: [X86] Support EVEX compression for EGPR (#77202)

[Shengchen Kan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1c674666fa3bc0cf6d62d920bdddc846b8105d12
      https://github.com/llvm/llvm-project/commit/1c674666fa3bc0cf6d62d920bdddc846b8105d12
  Author: Shengchen Kan <shengchen.kan at intel.com>
  Date:   2024-01-08 (Mon, 08 Jan 2024)

  Changed paths:
    M llvm/lib/Target/X86/X86CompressEVEX.cpp
    M llvm/lib/Target/X86/X86InstrInfo.h
    M llvm/lib/Target/X86/X86MCInstLower.cpp
    M llvm/test/CodeGen/X86/crc32-intrinsics-fast-isel-x86.ll
    M llvm/test/CodeGen/X86/crc32-intrinsics-fast-isel-x86_64.ll
    M llvm/test/CodeGen/X86/crc32-intrinsics-x86.ll
    M llvm/test/CodeGen/X86/crc32-intrinsics-x86_64.ll
    M llvm/test/CodeGen/X86/invpcid-intrinsic.ll
    M llvm/test/CodeGen/X86/movdir-intrinsic-x86.ll
    M llvm/test/CodeGen/X86/movdir-intrinsic-x86_64.ll
    M llvm/test/CodeGen/X86/sha.ll
    M llvm/test/CodeGen/X86/x64-cet-intrinsics.ll
    M llvm/utils/TableGen/X86CompressEVEXTablesEmitter.cpp

  Log Message:
  -----------
  [X86] Support EVEX compression for EGPR (#77202)

Compress promoted instruction (EVEX) to pre-promotion instruction
(legacy/VEX) when R16-R31 is not used.

Alternative of #77065