mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-09-04 09:30:13 +00:00
change, now you need a TargetOptions object to create a TargetMachine. Clang patch to follow. One small functionality change in PTX. PTX had commented out the machine verifier parts in their copy of printAndVerify. That now calls the version in LLVMTargetMachine. Users of PTX who need verification disabled should rely on not passing the command-line flag to enable it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145714 91177308-0d34-0410-b5e6-96231b3b80d8
145 lines
4.5 KiB
C++
145 lines
4.5 KiB
C++
//===-- TargetMachine.cpp - General Target Information ---------------------==//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file describes the general parts of a Target machine.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/CodeGen/MachineFunction.h"
|
|
#include "llvm/CodeGen/MachineFrameInfo.h"
|
|
#include "llvm/MC/MCAsmInfo.h"
|
|
#include "llvm/Target/TargetMachine.h"
|
|
#include "llvm/Target/TargetOptions.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
using namespace llvm;
|
|
|
|
//---------------------------------------------------------------------------
|
|
// Command-line options that tend to be useful on more than one back-end.
|
|
//
|
|
|
|
namespace llvm {
|
|
bool StrongPHIElim;
|
|
bool HasDivModLibcall;
|
|
bool AsmVerbosityDefault(false);
|
|
}
|
|
|
|
static cl::opt<bool>
|
|
DataSections("fdata-sections",
|
|
cl::desc("Emit data into separate sections"),
|
|
cl::init(false));
|
|
static cl::opt<bool>
|
|
FunctionSections("ffunction-sections",
|
|
cl::desc("Emit functions into separate sections"),
|
|
cl::init(false));
|
|
|
|
//---------------------------------------------------------------------------
|
|
// TargetMachine Class
|
|
//
|
|
|
|
TargetMachine::TargetMachine(const Target &T,
|
|
StringRef TT, StringRef CPU, StringRef FS,
|
|
const TargetOptions &Options)
|
|
: TheTarget(T), TargetTriple(TT), TargetCPU(CPU), TargetFS(FS),
|
|
CodeGenInfo(0), AsmInfo(0),
|
|
MCRelaxAll(false),
|
|
MCNoExecStack(false),
|
|
MCSaveTempLabels(false),
|
|
MCUseLoc(true),
|
|
MCUseCFI(true),
|
|
MCUseDwarfDirectory(false),
|
|
Options(Options) {
|
|
}
|
|
|
|
TargetMachine::~TargetMachine() {
|
|
delete CodeGenInfo;
|
|
delete AsmInfo;
|
|
}
|
|
|
|
/// getRelocationModel - Returns the code generation relocation model. The
|
|
/// choices are static, PIC, and dynamic-no-pic, and target default.
|
|
Reloc::Model TargetMachine::getRelocationModel() const {
|
|
if (!CodeGenInfo)
|
|
return Reloc::Default;
|
|
return CodeGenInfo->getRelocationModel();
|
|
}
|
|
|
|
/// getCodeModel - Returns the code model. The choices are small, kernel,
|
|
/// medium, large, and target default.
|
|
CodeModel::Model TargetMachine::getCodeModel() const {
|
|
if (!CodeGenInfo)
|
|
return CodeModel::Default;
|
|
return CodeGenInfo->getCodeModel();
|
|
}
|
|
|
|
/// getOptLevel - Returns the optimization level: None, Less,
|
|
/// Default, or Aggressive.
|
|
CodeGenOpt::Level TargetMachine::getOptLevel() const {
|
|
if (!CodeGenInfo)
|
|
return CodeGenOpt::Default;
|
|
return CodeGenInfo->getOptLevel();
|
|
}
|
|
|
|
bool TargetMachine::getAsmVerbosityDefault() {
|
|
return AsmVerbosityDefault;
|
|
}
|
|
|
|
void TargetMachine::setAsmVerbosityDefault(bool V) {
|
|
AsmVerbosityDefault = V;
|
|
}
|
|
|
|
bool TargetMachine::getFunctionSections() {
|
|
return FunctionSections;
|
|
}
|
|
|
|
bool TargetMachine::getDataSections() {
|
|
return DataSections;
|
|
}
|
|
|
|
void TargetMachine::setFunctionSections(bool V) {
|
|
FunctionSections = V;
|
|
}
|
|
|
|
void TargetMachine::setDataSections(bool V) {
|
|
DataSections = V;
|
|
}
|
|
|
|
/// DisableFramePointerElim - This returns true if frame pointer elimination
|
|
/// optimization should be disabled for the given machine function.
|
|
bool TargetOptions::DisableFramePointerElim(const MachineFunction &MF) const {
|
|
// Check to see if we should eliminate non-leaf frame pointers and then
|
|
// check to see if we should eliminate all frame pointers.
|
|
if (NoFramePointerElimNonLeaf && !NoFramePointerElim) {
|
|
const MachineFrameInfo *MFI = MF.getFrameInfo();
|
|
return MFI->hasCalls();
|
|
}
|
|
|
|
return NoFramePointerElim;
|
|
}
|
|
|
|
/// LessPreciseFPMAD - This flag return true when -enable-fp-mad option
|
|
/// is specified on the command line. When this flag is off(default), the
|
|
/// code generator is not allowed to generate mad (multiply add) if the
|
|
/// result is "less precise" than doing those operations individually.
|
|
bool TargetOptions::LessPreciseFPMAD() const {
|
|
return UnsafeFPMath || LessPreciseFPMADOption;
|
|
}
|
|
|
|
/// HonorSignDependentRoundingFPMath - Return true if the codegen must assume
|
|
/// that the rounding mode of the FPU can change from its default.
|
|
bool TargetOptions::HonorSignDependentRoundingFPMath() const {
|
|
return !UnsafeFPMath && HonorSignDependentRoundingFPMathOption;
|
|
}
|
|
|
|
/// getTrapFunctionName - If this returns a non-empty string, this means isel
|
|
/// should lower Intrinsic::trap to a call to the specified function name
|
|
/// instead of an ISD::TRAP node.
|
|
StringRef TargetOptions::getTrapFunctionName() const {
|
|
return TrapFuncName;
|
|
}
|