mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-04 06:09:05 +00:00
57f0db833d
them are generic changes. - Use the "fast" flag that's already being passed into the asm printers instead of shoving it into the DwarfWriter. - Instead of calling "MI->getParent()->getParent()" for every MI, set the machine function when calling "runOnMachineFunction" in the asm printers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65379 91177308-0d34-0410-b5e6-96231b3b80d8
134 lines
4.2 KiB
C++
134 lines
4.2 KiB
C++
//===-- MipsTargetMachine.cpp - Define TargetMachine for Mips -------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Implements the info about Mips target spec.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Mips.h"
|
|
#include "MipsTargetAsmInfo.h"
|
|
#include "MipsTargetMachine.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/PassManager.h"
|
|
#include "llvm/Target/TargetMachineRegistry.h"
|
|
using namespace llvm;
|
|
|
|
/// MipsTargetMachineModule - Note that this is used on hosts that
|
|
/// cannot link in a library unless there are references into the
|
|
/// library. In particular, it seems that it is not possible to get
|
|
/// things to work on Win32 without this. Though it is unused, do not
|
|
/// remove it.
|
|
extern "C" int MipsTargetMachineModule;
|
|
int MipsTargetMachineModule = 0;
|
|
|
|
// Register the target.
|
|
static RegisterTarget<MipsTargetMachine> X("mips", "Mips");
|
|
static RegisterTarget<MipselTargetMachine> Y("mipsel", "Mipsel");
|
|
|
|
const TargetAsmInfo *MipsTargetMachine::
|
|
createTargetAsmInfo() const
|
|
{
|
|
return new MipsTargetAsmInfo(*this);
|
|
}
|
|
|
|
// DataLayout --> Big-endian, 32-bit pointer/ABI/alignment
|
|
// The stack is always 8 byte aligned
|
|
// On function prologue, the stack is created by decrementing
|
|
// its pointer. Once decremented, all references are done with positive
|
|
// offset from the stack/frame pointer, using StackGrowsUp enables
|
|
// an easier handling.
|
|
// Using CodeModel::Large enables different CALL behavior.
|
|
MipsTargetMachine::
|
|
MipsTargetMachine(const Module &M, const std::string &FS, bool isLittle=false):
|
|
Subtarget(*this, M, FS, isLittle),
|
|
DataLayout(isLittle ? std::string("e-p:32:32:32-i8:8:32-i16:16:32") :
|
|
std::string("E-p:32:32:32-i8:8:32-i16:16:32")),
|
|
InstrInfo(*this),
|
|
FrameInfo(TargetFrameInfo::StackGrowsUp, 8, 0),
|
|
TLInfo(*this)
|
|
{
|
|
// Abicall enables PIC by default
|
|
if (Subtarget.hasABICall())
|
|
setRelocationModel(Reloc::PIC_);
|
|
|
|
// TODO: create an option to enable long calls, like -mlong-calls,
|
|
// that would be our CodeModel::Large. It must not work with Abicall.
|
|
if (getCodeModel() == CodeModel::Default)
|
|
setCodeModel(CodeModel::Small);
|
|
}
|
|
|
|
MipselTargetMachine::
|
|
MipselTargetMachine(const Module &M, const std::string &FS) :
|
|
MipsTargetMachine(M, FS, true) {}
|
|
|
|
// return 0 and must specify -march to gen MIPS code.
|
|
unsigned MipsTargetMachine::
|
|
getModuleMatchQuality(const Module &M)
|
|
{
|
|
// We strongly match "mips*-*".
|
|
std::string TT = M.getTargetTriple();
|
|
if (TT.size() >= 5 && std::string(TT.begin(), TT.begin()+5) == "mips-")
|
|
return 20;
|
|
|
|
if (TT.size() >= 13 && std::string(TT.begin(),
|
|
TT.begin()+13) == "mipsallegrex-")
|
|
return 20;
|
|
|
|
return 0;
|
|
}
|
|
|
|
// return 0 and must specify -march to gen MIPSEL code.
|
|
unsigned MipselTargetMachine::
|
|
getModuleMatchQuality(const Module &M)
|
|
{
|
|
// We strongly match "mips*el-*".
|
|
std::string TT = M.getTargetTriple();
|
|
if (TT.size() >= 7 && std::string(TT.begin(), TT.begin()+7) == "mipsel-")
|
|
return 20;
|
|
|
|
if (TT.size() >= 15 && std::string(TT.begin(),
|
|
TT.begin()+15) == "mipsallegrexel-")
|
|
return 20;
|
|
|
|
if (TT.size() == 3 && std::string(TT.begin(), TT.begin()+3) == "psp")
|
|
return 20;
|
|
|
|
return 0;
|
|
}
|
|
|
|
// Install an instruction selector pass using
|
|
// the ISelDag to gen Mips code.
|
|
bool MipsTargetMachine::
|
|
addInstSelector(PassManagerBase &PM, bool Fast)
|
|
{
|
|
PM.add(createMipsISelDag(*this));
|
|
return false;
|
|
}
|
|
|
|
// Implemented by targets that want to run passes immediately before
|
|
// machine code is emitted. return true if -print-machineinstrs should
|
|
// print out the code after the passes.
|
|
bool MipsTargetMachine::
|
|
addPreEmitPass(PassManagerBase &PM, bool Fast)
|
|
{
|
|
PM.add(createMipsDelaySlotFillerPass(*this));
|
|
return true;
|
|
}
|
|
|
|
// Implements the AssemblyEmitter for the target. Must return
|
|
// true if AssemblyEmitter is supported
|
|
bool MipsTargetMachine::
|
|
addAssemblyEmitter(PassManagerBase &PM, bool Fast,
|
|
raw_ostream &Out)
|
|
{
|
|
// Output assembly language.
|
|
PM.add(createMipsCodePrinterPass(Out, *this, Fast));
|
|
return false;
|
|
}
|