1 //===- M68k.h - Top-level interface for M68k representation -*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
10 /// This file contains the entry points for global functions defined in the
11 /// M68k target library, as used by the LLVM JIT.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_LIB_TARGET_M68K_M68K_H
16 #define LLVM_LIB_TARGET_M68K_M68K_H
21 class InstructionSelector
;
22 class M68kRegisterBankInfo
;
24 class M68kTargetMachine
;
26 /// This pass converts a legalized DAG into a M68k-specific DAG, ready for
27 /// instruction scheduling.
28 FunctionPass
*createM68kISelDag(M68kTargetMachine
&TM
);
30 /// Return a Machine IR pass that expands M68k-specific pseudo
31 /// instructions into a sequence of actual instructions. This pass
32 /// must run after prologue/epilogue insertion and before lowering
33 /// the MachineInstr to MC.
34 FunctionPass
*createM68kExpandPseudoPass();
36 /// This pass initializes a global base register for PIC on M68k.
37 FunctionPass
*createM68kGlobalBaseRegPass();
39 /// Finds sequential MOVEM instruction and collapse them into a single one. This
40 /// pass has to be run after all pseudo expansions and prologue/epilogue
41 /// emission so that all possible MOVEM are already in place.
42 FunctionPass
*createM68kCollapseMOVEMPass();
44 /// Finds MOVE instructions before any conditioanl branch instruction and
45 /// replaces them with MOVEM instruction. Motorola's MOVEs do trash(V,C) flags
46 /// register which prevents branch from taking the correct route. This pass
47 /// has to be run after all pseudo expansions and prologue/epilogue emission
48 /// so that all possible MOVEs are present.
49 FunctionPass
*createM68kConvertMOVToMOVMPass();
52 createM68kInstructionSelector(const M68kTargetMachine
&, const M68kSubtarget
&,
53 const M68kRegisterBankInfo
&);