mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-20 09:30:43 +00:00
79ce276083
and into the ScheduleDAGInstrs class, so that they don't get destructed and re-constructed for each block. This fixes a compile-time hot spot in the post-pass scheduler. To help facilitate this, tidy and do some minor reorganization in the scheduler constructor functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62275 91177308-0d34-0410-b5e6-96231b3b80d8
61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
//===-- PIC16ISelDAGToDAG.cpp - A dag to dag inst selector for PIC16 ------===//
|
|
//
|
|
// 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 PIC16 target.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define DEBUG_TYPE "pic16-isel"
|
|
|
|
#include "PIC16.h"
|
|
#include "PIC16ISelLowering.h"
|
|
#include "PIC16RegisterInfo.h"
|
|
#include "PIC16TargetMachine.h"
|
|
#include "llvm/CodeGen/SelectionDAGISel.h"
|
|
#include "llvm/Support/Compiler.h"
|
|
#include "llvm/Intrinsics.h"
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
|
|
class VISIBILITY_HIDDEN PIC16DAGToDAGISel : public SelectionDAGISel {
|
|
|
|
/// TM - Keep a reference to PIC16TargetMachine.
|
|
PIC16TargetMachine &TM;
|
|
|
|
/// PIC16Lowering - This object fully describes how to lower LLVM code to an
|
|
/// PIC16-specific SelectionDAG.
|
|
PIC16TargetLowering PIC16Lowering;
|
|
|
|
public:
|
|
explicit PIC16DAGToDAGISel(PIC16TargetMachine &tm) :
|
|
SelectionDAGISel(tm),
|
|
TM(tm), PIC16Lowering(*TM.getTargetLowering()) {}
|
|
|
|
// Pass Name
|
|
virtual const char *getPassName() const {
|
|
return "PIC16 DAG->DAG Pattern Instruction Selection";
|
|
}
|
|
|
|
virtual void InstructionSelect();
|
|
|
|
private:
|
|
// Include the pieces autogenerated from the target description.
|
|
#include "PIC16GenDAGISel.inc"
|
|
|
|
SDNode *Select(SDValue N);
|
|
|
|
// Match direct address complex pattern.
|
|
bool SelectDirectAddr(SDValue Op, SDValue N, SDValue &Address);
|
|
|
|
};
|
|
|
|
}
|
|
|