mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-01-06 04:31:08 +00:00
148b6a419f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37926 91177308-0d34-0410-b5e6-96231b3b80d8
94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
//===-- ARM/ARMCodeEmitter.cpp - Convert ARM code to machine code ---------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the Raul Herbster (raulherbster [at] gmail [dot]
|
|
// com) and is distributed under the University of Illinois Open Source License.
|
|
// See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains the pass that transforms the ARM machine instructions into
|
|
// relocatable machine code.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define DEBUG_TYPE "arm-emitter"
|
|
#include "ARMInstrInfo.h"
|
|
#include "ARMSubtarget.h"
|
|
#include "ARMTargetMachine.h"
|
|
#include "ARM.h"
|
|
#include "llvm/PassManager.h"
|
|
#include "llvm/CodeGen/MachineCodeEmitter.h"
|
|
#include "llvm/CodeGen/MachineFunctionPass.h"
|
|
#include "llvm/CodeGen/MachineInstr.h"
|
|
#include "llvm/CodeGen/Passes.h"
|
|
#include "llvm/Function.h"
|
|
#include "llvm/ADT/Statistic.h"
|
|
#include "llvm/Support/Compiler.h"
|
|
using namespace llvm;
|
|
|
|
STATISTIC(NumEmitted, "Number of machine instructions emitted");
|
|
|
|
namespace {
|
|
class VISIBILITY_HIDDEN Emitter : public MachineFunctionPass {
|
|
const ARMInstrInfo *II;
|
|
const TargetData *TD;
|
|
TargetMachine &TM;
|
|
MachineCodeEmitter &MCE;
|
|
public:
|
|
static char ID;
|
|
explicit Emitter(TargetMachine &tm, MachineCodeEmitter &mce)
|
|
: MachineFunctionPass((intptr_t)&ID), II(0), TD(0), TM(tm),
|
|
MCE(mce) {}
|
|
Emitter(TargetMachine &tm, MachineCodeEmitter &mce,
|
|
const ARMInstrInfo &ii, const TargetData &td)
|
|
: MachineFunctionPass((intptr_t)&ID), II(&ii), TD(&td), TM(tm),
|
|
MCE(mce) {}
|
|
|
|
bool runOnMachineFunction(MachineFunction &MF);
|
|
|
|
virtual const char *getPassName() const {
|
|
return "ARM Machine Code Emitter";
|
|
}
|
|
|
|
void emitInstruction(const MachineInstr &MI);
|
|
|
|
private:
|
|
|
|
};
|
|
char Emitter::ID = 0;
|
|
}
|
|
|
|
/// createARMCodeEmitterPass - Return a pass that emits the collected ARM code
|
|
/// to the specified MCE object.
|
|
FunctionPass *llvm::createARMCodeEmitterPass(ARMTargetMachine &TM,
|
|
MachineCodeEmitter &MCE) {
|
|
return new Emitter(TM, MCE);
|
|
}
|
|
|
|
bool Emitter::runOnMachineFunction(MachineFunction &MF) {
|
|
assert((MF.getTarget().getRelocationModel() != Reloc::Default ||
|
|
MF.getTarget().getRelocationModel() != Reloc::Static) &&
|
|
"JIT relocation model must be set to static or default!");
|
|
II = ((ARMTargetMachine&)MF.getTarget()).getInstrInfo();
|
|
TD = ((ARMTargetMachine&)MF.getTarget()).getTargetData();
|
|
|
|
do {
|
|
MCE.startFunction(MF);
|
|
for (MachineFunction::iterator MBB = MF.begin(), E = MF.end();
|
|
MBB != E; ++MBB) {
|
|
MCE.StartMachineBasicBlock(MBB);
|
|
for (MachineBasicBlock::const_iterator I = MBB->begin(), E = MBB->end();
|
|
I != E; ++I)
|
|
emitInstruction(*I);
|
|
}
|
|
} while (MCE.finishFunction(MF));
|
|
|
|
return false;
|
|
}
|
|
|
|
void Emitter::emitInstruction(const MachineInstr &MI) {
|
|
NumEmitted++; // Keep track of the # of mi's emitted
|
|
}
|