llvm/lib/Target/WebAssembly/WebAssemblyInstrRef.td

   1 // WebAssemblyInstrRef.td - WebAssembly reference type codegen --*- 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 /// \file
  10 /// WebAssembly reference type operand codegen constructs.
  11 ///
  12 //===----------------------------------------------------------------------===//
  13
  14 multiclass REF_I<WebAssemblyRegClass rc, ValueType vt> {
  15   defm REF_NULL_#rc : I<(outs rc:$res), (ins HeapType:$heaptype),
  16                         (outs), (ins HeapType:$heaptype),
  17                         [],
  18                         "ref.null\t$res, $heaptype",
  19                         "ref.null\t$heaptype",
  20                         0xd0>,
  21                       Requires<[HasReferenceTypes]>;
  22   defm SELECT_#rc: I<(outs rc:$dst), (ins rc:$lhs, rc:$rhs, I32:$cond),
  23                      (outs), (ins),
  24                      [(set rc:$dst,
  25                        (select I32:$cond, rc:$lhs, rc:$rhs))],
  26                      vt#".select\t$dst, $lhs, $rhs, $cond",
  27                      vt#".select", 0x1b>,
  28                    Requires<[HasReferenceTypes]>;
  29 }
  30
  31 defm "" : REF_I<FUNCREF, funcref>;
  32 defm "" : REF_I<EXTERNREF, externref>;
  33
  34 foreach rc = [FUNCREF, EXTERNREF] in {
  35 def : Pat<(select (i32 (setne I32:$cond, 0)), rc:$lhs, rc:$rhs),
  36           (!cast<Instruction>("SELECT_"#rc) rc:$lhs, rc:$rhs, I32:$cond)>;
  37 def : Pat<(select (i32 (seteq I32:$cond, 0)), rc:$lhs, rc:$rhs),
  38           (!cast<Instruction>("SELECT_"#rc) rc:$rhs, rc:$lhs, I32:$cond)>;
  39 }