[all-commits] [llvm/llvm-project] fcde8c: [TableGen][GlobalISel] Use `GIM_SwitchOpcode` in C...

[Pierre van Houtryve via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fcde8c88eb212ed39ff07fef2863bf3e1adb085e
      https://github.com/llvm/llvm-project/commit/fcde8c88eb212ed39ff07fef2863bf3e1adb085e
  Author: Pierre van Houtryve <pierre.vanhoutryve at amd.com>
  Date:   2023-09-20 (Wed, 20 Sep 2023)

  Changed paths:
    M llvm/test/TableGen/GlobalISelCombinerEmitter/builtins/match-table-replacerreg.td
    M llvm/test/TableGen/GlobalISelCombinerEmitter/match-table-imms.td
    M llvm/test/TableGen/GlobalISelCombinerEmitter/match-table-patfrag-root.td
    M llvm/test/TableGen/GlobalISelCombinerEmitter/match-table-permutations.td
    M llvm/test/TableGen/GlobalISelCombinerEmitter/match-table-variadics.td
    M llvm/test/TableGen/GlobalISelCombinerEmitter/match-table.td
    M llvm/utils/TableGen/GlobalISelCombinerEmitter.cpp

  Log Message:
  -----------
  [TableGen][GlobalISel] Use `GIM_SwitchOpcode` in Combiners (#66864)

The call to `initOpcodeValuesMap` was missing, causing the MatchTable to
(unintentionally) not emit a `SwitchMatcher`. Also adds other code
imported from `GlobalISelEmitter.cpp` to ensure rules are sorted by
precedence as well.

Overall this improves GlobalISel compile-time performance by a
noticeable amount. See #66751