2001-09-14 05:34:53 +00:00
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//===-- TargetMachine.cpp - General Target Information ---------------------==//
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2005-04-21 22:55:34 +00:00
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//
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2003-10-20 19:43:21 +00:00
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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2005-04-21 22:55:34 +00:00
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//
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2003-10-20 19:43:21 +00:00
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//===----------------------------------------------------------------------===//
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2001-09-14 05:34:53 +00:00
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//
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// This file describes the general parts of a Target machine.
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//
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//===----------------------------------------------------------------------===//
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2001-07-21 12:42:08 +00:00
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2004-06-21 21:20:23 +00:00
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#include "llvm/Target/TargetMachine.h"
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2006-02-22 20:19:42 +00:00
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#include "llvm/Target/TargetOptions.h"
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2002-10-28 23:55:33 +00:00
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#include "llvm/Type.h"
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2004-06-20 07:49:54 +00:00
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#include "llvm/CodeGen/IntrinsicLowering.h"
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2004-09-01 22:55:40 +00:00
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#include "llvm/Support/CommandLine.h"
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2003-12-28 21:23:38 +00:00
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using namespace llvm;
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2003-11-11 22:41:34 +00:00
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2004-03-04 19:16:23 +00:00
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//---------------------------------------------------------------------------
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// Command-line options that tend to be useful on more than one back-end.
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//
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2004-06-21 21:44:12 +00:00
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namespace llvm {
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bool PrintMachineCode;
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bool NoFramePointerElim;
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2005-01-15 06:00:32 +00:00
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bool NoExcessFPPrecision;
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2005-04-30 04:09:52 +00:00
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bool UnsafeFPMath;
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2006-02-22 20:19:42 +00:00
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Reloc::Model RelocationModel;
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2004-06-21 21:44:12 +00:00
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};
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2004-03-04 19:16:23 +00:00
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namespace {
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cl::opt<bool, true> PrintCode("print-machineinstrs",
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cl::desc("Print generated machine code"),
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cl::location(PrintMachineCode), cl::init(false));
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2004-06-21 21:08:45 +00:00
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2005-04-21 22:55:34 +00:00
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cl::opt<bool, true>
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2004-06-21 21:08:45 +00:00
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DisableFPElim("disable-fp-elim",
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cl::desc("Disable frame pointer elimination optimization"),
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2004-06-21 21:17:44 +00:00
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cl::location(NoFramePointerElim),
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cl::init(false));
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2005-01-15 06:00:32 +00:00
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cl::opt<bool, true>
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DisableExcessPrecision("disable-excess-fp-precision",
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2005-04-15 22:12:16 +00:00
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cl::desc("Disable optimizations that may increase FP precision"),
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cl::location(NoExcessFPPrecision),
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cl::init(false));
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2005-04-30 04:09:52 +00:00
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cl::opt<bool, true>
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EnableUnsafeFPMath("enable-unsafe-fp-math",
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cl::desc("Enable optimizations that may decrease FP precision"),
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cl::location(UnsafeFPMath),
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cl::init(false));
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2006-02-22 20:19:42 +00:00
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cl::opt<llvm::Reloc::Model, true>
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DefRelocationModel(
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"relocation-model",
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cl::desc("Choose relocation model"),
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cl::location(RelocationModel),
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cl::init(Reloc::Default),
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cl::values(
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clEnumValN(Reloc::Default, "default",
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"Target default relocation model"),
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clEnumValN(Reloc::Static, "static",
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"Non-relocatable code"),
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clEnumValN(Reloc::PIC, "pic",
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"Fully relocatable, position independent code"),
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clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic",
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"Relocatable external references, non-relocatable code"),
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clEnumValEnd));
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2004-03-04 19:16:23 +00:00
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};
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2001-07-21 12:42:08 +00:00
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//---------------------------------------------------------------------------
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2003-12-28 21:23:38 +00:00
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// TargetMachine Class
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//
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TargetMachine::TargetMachine(const std::string &name, IntrinsicLowering *il,
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bool LittleEndian,
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unsigned char PtrSize, unsigned char PtrAl,
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unsigned char DoubleAl, unsigned char FloatAl,
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unsigned char LongAl, unsigned char IntAl,
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2004-07-23 01:09:52 +00:00
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unsigned char ShortAl, unsigned char ByteAl,
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unsigned char BoolAl)
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2003-12-28 21:23:38 +00:00
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: Name(name), DataLayout(name, LittleEndian,
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PtrSize, PtrAl, DoubleAl, FloatAl, LongAl,
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2004-07-23 01:09:52 +00:00
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IntAl, ShortAl, ByteAl, BoolAl) {
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2003-12-28 21:23:38 +00:00
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IL = il ? il : new DefaultIntrinsicLowering();
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}
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2004-08-10 23:10:25 +00:00
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TargetMachine::TargetMachine(const std::string &name, IntrinsicLowering *il,
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const TargetData &TD)
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: Name(name), DataLayout(TD) {
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IL = il ? il : new DefaultIntrinsicLowering();
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}
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2004-03-03 02:12:47 +00:00
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TargetMachine::TargetMachine(const std::string &name, IntrinsicLowering *il,
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const Module &M)
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: Name(name), DataLayout(name, &M) {
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IL = il ? il : new DefaultIntrinsicLowering();
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}
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2003-12-28 21:23:38 +00:00
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TargetMachine::~TargetMachine() {
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delete IL;
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}
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2006-02-22 20:19:42 +00:00
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/// getRelocationModel - Returns the code generation relocation model. The
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/// choices are static, PIC, and dynamic-no-pic, and target default.
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Reloc::Model TargetMachine::getRelocationModel() {
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return RelocationModel;
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}
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/// setRelocationModel - Sets the code generation relocation model.
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void TargetMachine::setRelocationModel(Reloc::Model Model) {
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RelocationModel = Model;
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}
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