llvm/lib/Target/AArch64/AArch64Combine.td

   1 //=- AArch64.td - Define AArch64 Combine Rules ---------------*- tablegen -*-=//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 //
  10 //===----------------------------------------------------------------------===//
  11
  12 include "llvm/Target/GlobalISel/Combine.td"
  13
  14 def fconstant_to_constant : GICombineRule<
  15   (defs root:$root),
  16   (match (wip_match_opcode G_FCONSTANT):$root,
  17          [{ return matchFConstantToConstant(*${root}, MRI); }]),
  18   (apply [{ applyFConstantToConstant(*${root}); }])>;
  19
  20 def AArch64PreLegalizerCombinerHelper: GICombinerHelper<
  21   "AArch64GenPreLegalizerCombinerHelper", [all_combines,
  22                                            elide_br_by_inverting_cond,
  23                                            fconstant_to_constant]> {
  24   let DisableRuleOption = "aarch64prelegalizercombiner-disable-rule";
  25 }