//===-- TargetMachine.cpp - General Target Information ---------------------==//
-//
+//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and 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/Target/TargetMachine.h"
+#include "llvm/Target/TargetOptions.h"
#include "llvm/Type.h"
-#include "llvm/IntrinsicLowering.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 PrintMachineCode;
+ bool NoFramePointerElim;
+ bool NoExcessFPPrecision;
+ bool UnsafeFPMath;
+ Reloc::Model RelocationModel;
+};
+namespace {
+ cl::opt<bool, true> PrintCode("print-machineinstrs",
+ cl::desc("Print generated machine code"),
+ cl::location(PrintMachineCode), cl::init(false));
+
+ cl::opt<bool, true>
+ DisableFPElim("disable-fp-elim",
+ cl::desc("Disable frame pointer elimination optimization"),
+ cl::location(NoFramePointerElim),
+ cl::init(false));
+ cl::opt<bool, true>
+ DisableExcessPrecision("disable-excess-fp-precision",
+ cl::desc("Disable optimizations that may increase FP precision"),
+ cl::location(NoExcessFPPrecision),
+ cl::init(false));
+ cl::opt<bool, true>
+ EnableUnsafeFPMath("enable-unsafe-fp-math",
+ cl::desc("Enable optimizations that may decrease FP precision"),
+ cl::location(UnsafeFPMath),
+ cl::init(false));
+ cl::opt<llvm::Reloc::Model, true>
+ DefRelocationModel(
+ "relocation-model",
+ cl::desc("Choose relocation model"),
+ cl::location(RelocationModel),
+ cl::init(Reloc::Default),
+ cl::values(
+ clEnumValN(Reloc::Default, "default",
+ "Target default relocation model"),
+ clEnumValN(Reloc::Static, "static",
+ "Non-relocatable code"),
+ clEnumValN(Reloc::PIC, "pic",
+ "Fully relocatable, position independent code"),
+ clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic",
+ "Relocatable external references, non-relocatable code"),
+ clEnumValEnd));
+};
+
//---------------------------------------------------------------------------
// TargetMachine Class
//
-TargetMachine::TargetMachine(const std::string &name, IntrinsicLowering *il,
- bool LittleEndian,
+TargetMachine::TargetMachine(const std::string &name, bool LittleEndian,
unsigned char PtrSize, unsigned char PtrAl,
unsigned char DoubleAl, unsigned char FloatAl,
unsigned char LongAl, unsigned char IntAl,
- unsigned char ShortAl, unsigned char ByteAl)
+ unsigned char ShortAl, unsigned char ByteAl,
+ unsigned char BoolAl)
: Name(name), DataLayout(name, LittleEndian,
PtrSize, PtrAl, DoubleAl, FloatAl, LongAl,
- IntAl, ShortAl, ByteAl) {
- IL = il ? il : new DefaultIntrinsicLowering();
+ IntAl, ShortAl, ByteAl, BoolAl) {
+}
+
+TargetMachine::TargetMachine(const std::string &name, const TargetData &TD)
+ : Name(name), DataLayout(TD) {
}
-TargetMachine::TargetMachine(const std::string &name, IntrinsicLowering *il,
- const Module &M)
+
+TargetMachine::TargetMachine(const std::string &name, const Module &M)
: Name(name), DataLayout(name, &M) {
- IL = il ? il : new DefaultIntrinsicLowering();
}
TargetMachine::~TargetMachine() {
- delete IL;
}
-unsigned TargetMachine::findOptimalStorageSize(const Type *Ty) const {
- // All integer types smaller than ints promote to 4 byte integers.
- if (Ty->isIntegral() && Ty->getPrimitiveSize() < 4)
- return 4;
+/// getRelocationModel - Returns the code generation relocation model. The
+/// choices are static, PIC, and dynamic-no-pic, and target default.
+Reloc::Model TargetMachine::getRelocationModel() {
+ return RelocationModel;
+}
- return DataLayout.getTypeSize(Ty);
+/// setRelocationModel - Sets the code generation relocation model.
+void TargetMachine::setRelocationModel(Reloc::Model Model) {
+ RelocationModel = Model;
}