llvm/CodeGen/TargetOpcodes.h

0001 //===-- llvm/CodeGen/TargetOpcodes.h - Target Indep Opcodes -----*- C++ -*-===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008 //
0009 // This file defines the target independent instruction opcodes.
0010 //
0011 //===----------------------------------------------------------------------===//
0012
0013 #ifndef LLVM_CODEGEN_TARGETOPCODES_H
0014 #define LLVM_CODEGEN_TARGETOPCODES_H
0015
0016 namespace llvm {
0017
0018 /// Invariant opcodes: All instruction sets have these as their low opcodes.
0019 ///
0020 namespace TargetOpcode {
0021 enum {
0022 #define HANDLE_TARGET_OPCODE(OPC) OPC,
0023 #define HANDLE_TARGET_OPCODE_MARKER(IDENT, OPC) IDENT = OPC,
0024 #include "llvm/Support/TargetOpcodes.def"
0025 };
0026 } // end namespace TargetOpcode
0027
0028 /// Check whether the given Opcode is a generic opcode that is not supposed
0029 /// to appear after ISel.
0030 inline bool isPreISelGenericOpcode(unsigned Opcode) {
0031   return Opcode >= TargetOpcode::PRE_ISEL_GENERIC_OPCODE_START &&
0032          Opcode <= TargetOpcode::PRE_ISEL_GENERIC_OPCODE_END;
0033 }
0034
0035 /// Check whether the given Opcode is a target-specific opcode.
0036 inline bool isTargetSpecificOpcode(unsigned Opcode) {
0037   return Opcode > TargetOpcode::PRE_ISEL_GENERIC_OPCODE_END;
0038 }
0039
0040 /// \returns true if \p Opcode is an optimization hint opcode which is not
0041 /// supposed to appear after ISel.
0042 inline bool isPreISelGenericOptimizationHint(unsigned Opcode) {
0043   return Opcode >= TargetOpcode::PRE_ISEL_GENERIC_OPTIMIZATION_HINT_START &&
0044          Opcode <= TargetOpcode::PRE_ISEL_GENERIC_OPTIMIZATION_HINT_END;
0045 }
0046
0047 } // end namespace llvm
0048
0049 #endif