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//===-- PPCTargetMachine.cpp - Define TargetMachine for PowerPC -----------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
//
// Top-level implementation for the PowerPC target.
//
//===----------------------------------------------------------------------===//
#include "PPC.h"
#include "PPCFrameInfo.h"
#include "PPCTargetMachine.h"
#include "PPCJITInfo.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/Analysis/Verifier.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetMachineRegistry.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Support/CommandLine.h"
#include <iostream>
using namespace llvm;
namespace {
// Register the targets
RegisterTarget<PPC32TargetMachine>
X("ppc32", " PowerPC 32");
RegisterTarget<PPC64TargetMachine>
Y("ppc64", " PowerPC 64");
}
unsigned PPC32TargetMachine::getJITMatchQuality() {
#if defined(__POWERPC__) || defined (__ppc__) || defined(_POWER)
if (sizeof(void*) == 4)
return 10;
#endif
return 0;
}
unsigned PPC64TargetMachine::getJITMatchQuality() {
#if defined(__POWERPC__) || defined (__ppc__) || defined(_POWER)
if (sizeof(void*) == 8)
return 10;
#endif
return 0;
}
unsigned PPC32TargetMachine::getModuleMatchQuality(const Module &M) {
// We strongly match "powerpc-*".
std::string TT = M.getTargetTriple();
if (TT.size() >= 8 && std::string(TT.begin(), TT.begin()+8) == "powerpc-")
return 20;
if (M.getEndianness() == Module::BigEndian &&
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 PPC64TargetMachine::getModuleMatchQuality(const Module &M) {
// We strongly match "powerpc64-*".
std::string TT = M.getTargetTriple();
if (TT.size() >= 10 && std::string(TT.begin(), TT.begin()+10) == "powerpc64-")
return 20;
if (M.getEndianness() == Module::BigEndian &&
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;
}
PPCTargetMachine::PPCTargetMachine(const Module &M, const std::string &FS,
bool is64Bit)
: TargetMachine("PowerPC"), Subtarget(M, FS, is64Bit),
DataLayout(Subtarget.getTargetDataString()), InstrInfo(*this),
FrameInfo(*this, false), JITInfo(*this), TLInfo(*this),
InstrItins(Subtarget.getInstrItineraryData()) {
if (getRelocationModel() == Reloc::Default)
if (Subtarget.isDarwin())
setRelocationModel(Reloc::DynamicNoPIC);
else
setRelocationModel(Reloc::PIC);
}
PPC32TargetMachine::PPC32TargetMachine(const Module &M, const std::string &FS)
: PPCTargetMachine(M, FS, false) {
}
PPC64TargetMachine::PPC64TargetMachine(const Module &M, const std::string &FS)
: PPCTargetMachine(M, FS, true) {
}
/// addPassesToEmitFile - Add passes to the specified pass manager to implement
/// a static compiler for this target.
///
bool PPCTargetMachine::addPassesToEmitFile(PassManager &PM,
std::ostream &Out,
CodeGenFileType FileType,
bool Fast) {
if (FileType != TargetMachine::AssemblyFile) return true;
// Run loop strength reduction before anything else.
if (!Fast) PM.add(createLoopStrengthReducePass(&TLInfo));
// FIXME: Implement efficient support for garbage collection intrinsics.
PM.add(createLowerGCPass());
// FIXME: Implement the invoke/unwind instructions!
PM.add(createLowerInvokePass());
// Clean up after other passes, e.g. merging critical edges.
if (!Fast) PM.add(createCFGSimplificationPass());
// Make sure that no unreachable blocks are instruction selected.
PM.add(createUnreachableBlockEliminationPass());
// Install an instruction selector.
PM.add(createPPCISelDag(*this));
if (PrintMachineCode)
PM.add(createMachineFunctionPrinterPass(&std::cerr));
PM.add(createRegisterAllocator());
if (PrintMachineCode)
PM.add(createMachineFunctionPrinterPass(&std::cerr));
PM.add(createPrologEpilogCodeInserter());
// Must run branch selection immediately preceding the asm printer
PM.add(createPPCBranchSelectionPass());
PM.add(createDarwinAsmPrinter(Out, *this));
PM.add(createMachineCodeDeleter());
return false;
}
void PPCJITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
// The JIT should use the static relocation model.
TM.setRelocationModel(Reloc::Static);
// Run loop strength reduction before anything else.
PM.add(createLoopStrengthReducePass(TM.getTargetLowering()));
// FIXME: Implement efficient support for garbage collection intrinsics.
PM.add(createLowerGCPass());
// FIXME: Implement the invoke/unwind instructions!
PM.add(createLowerInvokePass());
// Clean up after other passes, e.g. merging critical edges.
PM.add(createCFGSimplificationPass());
// Make sure that no unreachable blocks are instruction selected.
PM.add(createUnreachableBlockEliminationPass());
// Install an instruction selector.
PM.add(createPPCISelDag(TM));
PM.add(createRegisterAllocator());
PM.add(createPrologEpilogCodeInserter());
// Must run branch selection immediately preceding the asm printer
PM.add(createPPCBranchSelectionPass());
if (PrintMachineCode)
PM.add(createMachineFunctionPrinterPass(&std::cerr));
}
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