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well as 2 files that use "Registrator"s. These are to be used by the MSVC builds, as the Win32 linker does not include libs that are otherwise unreferenced, even if global constructors in the lib have side-effects. Patch by Scott Graham! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59378 91177308-0d34-0410-b5e6-96231b3b80d8
197 lines
6.6 KiB
C++
197 lines
6.6 KiB
C++
//===-- PPCTargetMachine.cpp - Define TargetMachine for PowerPC -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Top-level implementation for the PowerPC target.
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//
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//===----------------------------------------------------------------------===//
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#include "PPC.h"
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#include "PPCTargetAsmInfo.h"
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#include "PPCTargetMachine.h"
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#include "llvm/Module.h"
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#include "llvm/PassManager.h"
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#include "llvm/Target/TargetMachineRegistry.h"
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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/// PowerPCTargetMachineModule - Note that this is used on hosts that
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/// cannot link in a library unless there are references into the
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/// library. In particular, it seems that it is not possible to get
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/// things to work on Win32 without this. Though it is unused, do not
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/// remove it.
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extern "C" int PowerPCTargetMachineModule;
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int PowerPCTargetMachineModule = 0;
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// Register the targets
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static RegisterTarget<PPC32TargetMachine>
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X("ppc32", "PowerPC 32");
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static RegisterTarget<PPC64TargetMachine>
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Y("ppc64", "PowerPC 64");
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// No assembler printer by default
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PPCTargetMachine::AsmPrinterCtorFn PPCTargetMachine::AsmPrinterCtor = 0;
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const TargetAsmInfo *PPCTargetMachine::createTargetAsmInfo() const {
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if (Subtarget.isDarwin())
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return new PPCDarwinTargetAsmInfo(*this);
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else
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return new PPCLinuxTargetAsmInfo(*this);
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}
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unsigned PPC32TargetMachine::getJITMatchQuality() {
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#if defined(__POWERPC__) || defined (__ppc__) || defined(_POWER) || defined(__PPC__)
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if (sizeof(void*) == 4)
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return 10;
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#endif
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return 0;
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}
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unsigned PPC64TargetMachine::getJITMatchQuality() {
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#if defined(__POWERPC__) || defined (__ppc__) || defined(_POWER) || defined(__PPC__)
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if (sizeof(void*) == 8)
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return 10;
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#endif
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return 0;
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}
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unsigned PPC32TargetMachine::getModuleMatchQuality(const Module &M) {
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// We strongly match "powerpc-*".
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std::string TT = M.getTargetTriple();
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if (TT.size() >= 8 && std::string(TT.begin(), TT.begin()+8) == "powerpc-")
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return 20;
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// If the target triple is something non-powerpc, we don't match.
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if (!TT.empty()) return 0;
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if (M.getEndianness() == Module::BigEndian &&
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M.getPointerSize() == Module::Pointer32)
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return 10; // Weak match
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else if (M.getEndianness() != Module::AnyEndianness ||
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M.getPointerSize() != Module::AnyPointerSize)
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return 0; // Match for some other target
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return getJITMatchQuality()/2;
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}
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unsigned PPC64TargetMachine::getModuleMatchQuality(const Module &M) {
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// We strongly match "powerpc64-*".
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std::string TT = M.getTargetTriple();
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if (TT.size() >= 10 && std::string(TT.begin(), TT.begin()+10) == "powerpc64-")
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return 20;
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if (M.getEndianness() == Module::BigEndian &&
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M.getPointerSize() == Module::Pointer64)
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return 10; // Weak match
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else if (M.getEndianness() != Module::AnyEndianness ||
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M.getPointerSize() != Module::AnyPointerSize)
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return 0; // Match for some other target
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return getJITMatchQuality()/2;
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}
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PPCTargetMachine::PPCTargetMachine(const Module &M, const std::string &FS,
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bool is64Bit)
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: Subtarget(*this, M, FS, is64Bit),
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DataLayout(Subtarget.getTargetDataString()), InstrInfo(*this),
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FrameInfo(*this, is64Bit), JITInfo(*this, is64Bit), TLInfo(*this),
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InstrItins(Subtarget.getInstrItineraryData()), MachOWriterInfo(*this) {
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if (getRelocationModel() == Reloc::Default) {
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if (Subtarget.isDarwin())
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setRelocationModel(Reloc::DynamicNoPIC);
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else
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setRelocationModel(Reloc::Static);
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}
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}
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/// Override this for PowerPC. Tail merging happily breaks up instruction issue
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/// groups, which typically degrades performance.
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bool PPCTargetMachine::getEnableTailMergeDefault() const { return false; }
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PPC32TargetMachine::PPC32TargetMachine(const Module &M, const std::string &FS)
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: PPCTargetMachine(M, FS, false) {
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}
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PPC64TargetMachine::PPC64TargetMachine(const Module &M, const std::string &FS)
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: PPCTargetMachine(M, FS, true) {
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}
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//===----------------------------------------------------------------------===//
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// Pass Pipeline Configuration
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//===----------------------------------------------------------------------===//
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bool PPCTargetMachine::addInstSelector(PassManagerBase &PM, bool Fast) {
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// Install an instruction selector.
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PM.add(createPPCISelDag(*this));
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return false;
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}
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bool PPCTargetMachine::addPreEmitPass(PassManagerBase &PM, bool Fast) {
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// Must run branch selection immediately preceding the asm printer.
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PM.add(createPPCBranchSelectionPass());
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return false;
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}
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bool PPCTargetMachine::addAssemblyEmitter(PassManagerBase &PM, bool Fast,
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raw_ostream &Out) {
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assert(AsmPrinterCtor && "AsmPrinter was not linked in");
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if (AsmPrinterCtor)
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PM.add(AsmPrinterCtor(Out, *this));
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return false;
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}
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bool PPCTargetMachine::addCodeEmitter(PassManagerBase &PM, bool Fast,
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bool DumpAsm, MachineCodeEmitter &MCE) {
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// The JIT should use the static relocation model in ppc32 mode, PIC in ppc64.
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// FIXME: This should be moved to TargetJITInfo!!
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if (Subtarget.isPPC64()) {
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// We use PIC codegen in ppc64 mode, because otherwise we'd have to use many
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// instructions to materialize arbitrary global variable + function +
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// constant pool addresses.
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setRelocationModel(Reloc::PIC_);
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// Temporary workaround for the inability of PPC64 JIT to handle jump
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// tables.
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DisableJumpTables = true;
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} else {
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setRelocationModel(Reloc::Static);
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}
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// Inform the subtarget that we are in JIT mode. FIXME: does this break macho
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// writing?
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Subtarget.SetJITMode();
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// Machine code emitter pass for PowerPC.
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PM.add(createPPCCodeEmitterPass(*this, MCE));
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if (DumpAsm) {
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assert(AsmPrinterCtor && "AsmPrinter was not linked in");
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if (AsmPrinterCtor)
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PM.add(AsmPrinterCtor(errs(), *this));
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}
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return false;
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}
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bool PPCTargetMachine::addSimpleCodeEmitter(PassManagerBase &PM, bool Fast,
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bool DumpAsm, MachineCodeEmitter &MCE) {
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// Machine code emitter pass for PowerPC.
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PM.add(createPPCCodeEmitterPass(*this, MCE));
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if (DumpAsm) {
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assert(AsmPrinterCtor && "AsmPrinter was not linked in");
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if (AsmPrinterCtor)
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PM.add(AsmPrinterCtor(errs(), *this));
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}
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return false;
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}
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