mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-23 17:29:19 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177092 91177308-0d34-0410-b5e6-96231b3b80d8
94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
//===---- MipsISelDAGToDAG.h - A Dag to Dag Inst Selector for Mips --------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines an instruction selector for the MIPS target.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef MIPSISELDAGTODAG_H
|
|
#define MIPSISELDAGTODAG_H
|
|
|
|
#include "Mips.h"
|
|
#include "MipsSubtarget.h"
|
|
#include "MipsTargetMachine.h"
|
|
#include "llvm/CodeGen/SelectionDAGISel.h"
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Instruction Selector Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// MipsDAGToDAGISel - MIPS specific code to select MIPS machine
|
|
// instructions for SelectionDAG operations.
|
|
//===----------------------------------------------------------------------===//
|
|
namespace llvm {
|
|
|
|
class MipsDAGToDAGISel : public SelectionDAGISel {
|
|
public:
|
|
explicit MipsDAGToDAGISel(MipsTargetMachine &TM)
|
|
: SelectionDAGISel(TM), Subtarget(TM.getSubtarget<MipsSubtarget>()) {}
|
|
|
|
// Pass Name
|
|
virtual const char *getPassName() const {
|
|
return "MIPS DAG->DAG Pattern Instruction Selection";
|
|
}
|
|
|
|
virtual bool runOnMachineFunction(MachineFunction &MF);
|
|
|
|
protected:
|
|
SDNode *getGlobalBaseReg();
|
|
|
|
/// Keep a pointer to the MipsSubtarget around so that we can make the right
|
|
/// decision when generating code for different targets.
|
|
const MipsSubtarget &Subtarget;
|
|
|
|
private:
|
|
// Include the pieces autogenerated from the target description.
|
|
#include "MipsGenDAGISel.inc"
|
|
|
|
// Complex Pattern.
|
|
/// (reg + imm).
|
|
virtual bool selectAddrRegImm(SDValue Addr, SDValue &Base,
|
|
SDValue &Offset) const;
|
|
|
|
/// Fall back on this function if all else fails.
|
|
virtual bool selectAddrDefault(SDValue Addr, SDValue &Base,
|
|
SDValue &Offset) const;
|
|
|
|
/// Match integer address pattern.
|
|
virtual bool selectIntAddr(SDValue Addr, SDValue &Base,
|
|
SDValue &Offset) const;
|
|
|
|
virtual bool selectAddr16(SDNode *Parent, SDValue N, SDValue &Base,
|
|
SDValue &Offset, SDValue &Alias);
|
|
|
|
virtual SDNode *Select(SDNode *N);
|
|
|
|
virtual std::pair<bool, SDNode*> selectNode(SDNode *Node) = 0;
|
|
|
|
// getImm - Return a target constant with the specified value.
|
|
inline SDValue getImm(const SDNode *Node, uint64_t Imm) {
|
|
return CurDAG->getTargetConstant(Imm, Node->getValueType(0));
|
|
}
|
|
|
|
virtual void processFunctionAfterISel(MachineFunction &MF) = 0;
|
|
|
|
virtual bool SelectInlineAsmMemoryOperand(const SDValue &Op,
|
|
char ConstraintCode,
|
|
std::vector<SDValue> &OutOps);
|
|
};
|
|
|
|
/// createMipsISelDag - This pass converts a legalized DAG into a
|
|
/// MIPS-specific DAG, ready for instruction scheduling.
|
|
FunctionPass *createMipsISelDag(MipsTargetMachine &TM);
|
|
|
|
}
|
|
|
|
#endif
|