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89 lines
3.3 KiB
C++
89 lines
3.3 KiB
C++
//===-- TargetMachine.cpp - General Target Information ---------------------==//
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//
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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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//
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//===----------------------------------------------------------------------===//
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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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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Type.h"
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#include "llvm/CodeGen/IntrinsicLowering.h"
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#include "llvm/Support/CommandLine.h"
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using namespace llvm;
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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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namespace llvm {
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bool PrintMachineCode;
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bool NoFramePointerElim;
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bool NoExcessFPPrecision;
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int PatternISelTriState;
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bool UnsafeFPMath;
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};
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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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cl::opt<bool, true>
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DisableFPElim("disable-fp-elim",
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cl::desc("Disable frame pointer elimination optimization"),
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cl::location(NoFramePointerElim),
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cl::init(false));
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cl::opt<bool, true>
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DisableExcessPrecision("disable-excess-fp-precision",
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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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cl::opt<int, true> PatternISel("enable-pattern-isel",
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cl::desc("sets the pattern ISel off(0), on(1), default(2)"),
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cl::location(PatternISelTriState),
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cl::init(2));
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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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};
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//---------------------------------------------------------------------------
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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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unsigned char ShortAl, unsigned char ByteAl,
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unsigned char BoolAl)
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: Name(name), DataLayout(name, LittleEndian,
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PtrSize, PtrAl, DoubleAl, FloatAl, LongAl,
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IntAl, ShortAl, ByteAl, BoolAl) {
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IL = il ? il : new DefaultIntrinsicLowering();
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}
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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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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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TargetMachine::~TargetMachine() {
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delete IL;
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}
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