mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-09 10:05:41 +00:00
cb37188323
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55092 91177308-0d34-0410-b5e6-96231b3b80d8
239 lines
8.3 KiB
C++
239 lines
8.3 KiB
C++
//===-- X86TargetMachine.cpp - Define TargetMachine for the X86 -----------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the X86 specific subclass of TargetMachine.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "X86TargetAsmInfo.h"
|
|
#include "X86TargetMachine.h"
|
|
#include "X86.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/PassManager.h"
|
|
#include "llvm/CodeGen/MachineFunction.h"
|
|
#include "llvm/CodeGen/Passes.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include "llvm/Target/TargetOptions.h"
|
|
#include "llvm/Target/TargetMachineRegistry.h"
|
|
using namespace llvm;
|
|
|
|
/// X86TargetMachineModule - 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 X86TargetMachineModule;
|
|
int X86TargetMachineModule = 0;
|
|
|
|
// Register the target.
|
|
static RegisterTarget<X86_32TargetMachine>
|
|
X("x86", " 32-bit X86: Pentium-Pro and above");
|
|
static RegisterTarget<X86_64TargetMachine>
|
|
Y("x86-64", " 64-bit X86: EM64T and AMD64");
|
|
|
|
// No assembler printer by default
|
|
X86TargetMachine::AsmPrinterCtorFn X86TargetMachine::AsmPrinterCtor = 0;
|
|
|
|
const TargetAsmInfo *X86TargetMachine::createTargetAsmInfo() const {
|
|
if (Subtarget.isFlavorIntel())
|
|
return new X86WinTargetAsmInfo(*this);
|
|
else
|
|
switch (Subtarget.TargetType) {
|
|
case X86Subtarget::isDarwin:
|
|
return new X86DarwinTargetAsmInfo(*this);
|
|
case X86Subtarget::isELF:
|
|
return new X86ELFTargetAsmInfo(*this);
|
|
case X86Subtarget::isMingw:
|
|
case X86Subtarget::isCygwin:
|
|
return new X86COFFTargetAsmInfo(*this);
|
|
case X86Subtarget::isWindows:
|
|
return new X86WinTargetAsmInfo(*this);
|
|
default:
|
|
return new X86TargetAsmInfo(*this);
|
|
}
|
|
}
|
|
|
|
unsigned X86_32TargetMachine::getJITMatchQuality() {
|
|
#if defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)
|
|
return 10;
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
unsigned X86_64TargetMachine::getJITMatchQuality() {
|
|
#if defined(__x86_64__) || defined(_M_AMD64)
|
|
return 10;
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
unsigned X86_32TargetMachine::getModuleMatchQuality(const Module &M) {
|
|
// We strongly match "i[3-9]86-*".
|
|
std::string TT = M.getTargetTriple();
|
|
if (TT.size() >= 5 && TT[0] == 'i' && TT[2] == '8' && TT[3] == '6' &&
|
|
TT[4] == '-' && TT[1] - '3' < 6)
|
|
return 20;
|
|
// If the target triple is something non-X86, we don't match.
|
|
if (!TT.empty()) return 0;
|
|
|
|
if (M.getEndianness() == Module::LittleEndian &&
|
|
M.getPointerSize() == Module::Pointer32)
|
|
return 10; // Weak match
|
|
else if (M.getEndianness() != Module::AnyEndianness ||
|
|
M.getPointerSize() != Module::AnyPointerSize)
|
|
return 0; // Match for some other target
|
|
|
|
return getJITMatchQuality()/2;
|
|
}
|
|
|
|
unsigned X86_64TargetMachine::getModuleMatchQuality(const Module &M) {
|
|
// We strongly match "x86_64-*".
|
|
std::string TT = M.getTargetTriple();
|
|
if (TT.size() >= 7 && TT[0] == 'x' && TT[1] == '8' && TT[2] == '6' &&
|
|
TT[3] == '_' && TT[4] == '6' && TT[5] == '4' && TT[6] == '-')
|
|
return 20;
|
|
|
|
// We strongly match "amd64-*".
|
|
if (TT.size() >= 6 && TT[0] == 'a' && TT[1] == 'm' && TT[2] == 'd' &&
|
|
TT[3] == '6' && TT[4] == '4' && TT[5] == '-')
|
|
return 20;
|
|
|
|
// If the target triple is something non-X86-64, we don't match.
|
|
if (!TT.empty()) return 0;
|
|
|
|
if (M.getEndianness() == Module::LittleEndian &&
|
|
M.getPointerSize() == Module::Pointer64)
|
|
return 10; // Weak match
|
|
else if (M.getEndianness() != Module::AnyEndianness ||
|
|
M.getPointerSize() != Module::AnyPointerSize)
|
|
return 0; // Match for some other target
|
|
|
|
return getJITMatchQuality()/2;
|
|
}
|
|
|
|
X86_32TargetMachine::X86_32TargetMachine(const Module &M, const std::string &FS)
|
|
: X86TargetMachine(M, FS, false) {
|
|
}
|
|
|
|
|
|
X86_64TargetMachine::X86_64TargetMachine(const Module &M, const std::string &FS)
|
|
: X86TargetMachine(M, FS, true) {
|
|
}
|
|
|
|
/// X86TargetMachine ctor - Create an ILP32 architecture model
|
|
///
|
|
X86TargetMachine::X86TargetMachine(const Module &M, const std::string &FS,
|
|
bool is64Bit)
|
|
: Subtarget(M, FS, is64Bit),
|
|
DataLayout(Subtarget.getDataLayout()),
|
|
FrameInfo(TargetFrameInfo::StackGrowsDown,
|
|
Subtarget.getStackAlignment(), Subtarget.is64Bit() ? -8 : -4),
|
|
InstrInfo(*this), JITInfo(*this), TLInfo(*this) {
|
|
DefRelocModel = getRelocationModel();
|
|
// FIXME: Correctly select PIC model for Win64 stuff
|
|
if (getRelocationModel() == Reloc::Default) {
|
|
if (Subtarget.isTargetDarwin() ||
|
|
(Subtarget.isTargetCygMing() && !Subtarget.isTargetWin64()))
|
|
setRelocationModel(Reloc::DynamicNoPIC);
|
|
else
|
|
setRelocationModel(Reloc::Static);
|
|
}
|
|
if (Subtarget.is64Bit()) {
|
|
// No DynamicNoPIC support under X86-64.
|
|
if (getRelocationModel() == Reloc::DynamicNoPIC)
|
|
setRelocationModel(Reloc::PIC_);
|
|
// Default X86-64 code model is small.
|
|
if (getCodeModel() == CodeModel::Default)
|
|
setCodeModel(CodeModel::Small);
|
|
}
|
|
|
|
if (Subtarget.isTargetCygMing())
|
|
Subtarget.setPICStyle(PICStyle::WinPIC);
|
|
else if (Subtarget.isTargetDarwin()) {
|
|
if (Subtarget.is64Bit())
|
|
Subtarget.setPICStyle(PICStyle::RIPRel);
|
|
else
|
|
Subtarget.setPICStyle(PICStyle::Stub);
|
|
} else if (Subtarget.isTargetELF()) {
|
|
if (Subtarget.is64Bit())
|
|
Subtarget.setPICStyle(PICStyle::RIPRel);
|
|
else
|
|
Subtarget.setPICStyle(PICStyle::GOT);
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Pass Pipeline Configuration
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
bool X86TargetMachine::addInstSelector(PassManagerBase &PM, bool Fast) {
|
|
// Install an instruction selector.
|
|
PM.add(createX86ISelDag(*this, Fast));
|
|
return false;
|
|
}
|
|
|
|
bool X86TargetMachine::addPreRegAlloc(PassManagerBase &PM, bool Fast) {
|
|
// Calculate and set max stack object alignment early, so we can decide
|
|
// whether we will need stack realignment (and thus FP).
|
|
PM.add(createX86MaxStackAlignmentCalculatorPass());
|
|
return false; // -print-machineinstr shouldn't print after this.
|
|
}
|
|
|
|
bool X86TargetMachine::addPostRegAlloc(PassManagerBase &PM, bool Fast) {
|
|
PM.add(createX86FloatingPointStackifierPass());
|
|
return true; // -print-machineinstr should print after this.
|
|
}
|
|
|
|
bool X86TargetMachine::addAssemblyEmitter(PassManagerBase &PM, bool Fast,
|
|
raw_ostream &Out) {
|
|
assert(AsmPrinterCtor && "AsmPrinter was not linked in");
|
|
if (AsmPrinterCtor)
|
|
PM.add(AsmPrinterCtor(Out, *this));
|
|
return false;
|
|
}
|
|
|
|
bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM, bool Fast,
|
|
bool DumpAsm, MachineCodeEmitter &MCE) {
|
|
// FIXME: Move this to TargetJITInfo!
|
|
// On Darwin, do not override 64-bit setting made in X86TargetMachine().
|
|
if (DefRelocModel == Reloc::Default &&
|
|
(!Subtarget.isTargetDarwin() || !Subtarget.is64Bit()))
|
|
setRelocationModel(Reloc::Static);
|
|
|
|
// 64-bit JIT places everything in the same buffer except external functions.
|
|
// On Darwin, use small code model but hack the call instruction for
|
|
// externals. Elsewhere, do not assume globals are in the lower 4G.
|
|
if (Subtarget.is64Bit()) {
|
|
if (Subtarget.isTargetDarwin())
|
|
setCodeModel(CodeModel::Small);
|
|
else
|
|
setCodeModel(CodeModel::Large);
|
|
}
|
|
|
|
PM.add(createX86CodeEmitterPass(*this, MCE));
|
|
if (DumpAsm) {
|
|
assert(AsmPrinterCtor && "AsmPrinter was not linked in");
|
|
if (AsmPrinterCtor)
|
|
PM.add(AsmPrinterCtor(errs(), *this));
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool X86TargetMachine::addSimpleCodeEmitter(PassManagerBase &PM, bool Fast,
|
|
bool DumpAsm, MachineCodeEmitter &MCE) {
|
|
PM.add(createX86CodeEmitterPass(*this, MCE));
|
|
if (DumpAsm) {
|
|
assert(AsmPrinterCtor && "AsmPrinter was not linked in");
|
|
if (AsmPrinterCtor)
|
|
PM.add(AsmPrinterCtor(errs(), *this));
|
|
}
|
|
|
|
return false;
|
|
}
|