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https://github.com/c64scene-ar/llvm-6502.git
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Summary: DataLayout keeps the string used for its creation. As a side effect it is no longer needed in the Module. This is "almost" NFC, the string is no longer canonicalized, you can't rely on two "equals" DataLayout having the same string returned by getStringRepresentation(). Get rid of DataLayoutPass: the DataLayout is in the Module The DataLayout is "per-module", let's enforce this by not duplicating it more than necessary. One more step toward non-optionality of the DataLayout in the module. Make DataLayout Non-Optional in the Module Module->getDataLayout() will never returns nullptr anymore. Reviewers: echristo Subscribers: resistor, llvm-commits, jholewinski Differential Revision: http://reviews.llvm.org/D7992 From: Mehdi Amini <mehdi.amini@apple.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231270 91177308-0d34-0410-b5e6-96231b3b80d8
261 lines
7.0 KiB
C++
261 lines
7.0 KiB
C++
//===-- TargetMachine.cpp -------------------------------------------------===//
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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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// This file implements the LLVM-C part of TargetMachine.h
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//
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//===----------------------------------------------------------------------===//
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#include "llvm-c/TargetMachine.h"
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#include "llvm-c/Core.h"
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#include "llvm-c/Target.h"
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#include "llvm/Analysis/TargetTransformInfo.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/LegacyPassManager.h"
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#include "llvm/Support/CodeGen.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/FormattedStream.h"
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#include "llvm/Support/Host.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Target/TargetSubtargetInfo.h"
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#include <cassert>
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#include <cstdlib>
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#include <cstring>
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using namespace llvm;
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inline TargetMachine *unwrap(LLVMTargetMachineRef P) {
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return reinterpret_cast<TargetMachine*>(P);
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}
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inline Target *unwrap(LLVMTargetRef P) {
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return reinterpret_cast<Target*>(P);
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}
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inline LLVMTargetMachineRef wrap(const TargetMachine *P) {
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return
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reinterpret_cast<LLVMTargetMachineRef>(const_cast<TargetMachine*>(P));
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}
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inline LLVMTargetRef wrap(const Target * P) {
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return reinterpret_cast<LLVMTargetRef>(const_cast<Target*>(P));
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}
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LLVMTargetRef LLVMGetFirstTarget() {
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if(TargetRegistry::begin() == TargetRegistry::end()) {
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return nullptr;
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}
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const Target* target = &*TargetRegistry::begin();
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return wrap(target);
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}
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LLVMTargetRef LLVMGetNextTarget(LLVMTargetRef T) {
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return wrap(unwrap(T)->getNext());
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}
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LLVMTargetRef LLVMGetTargetFromName(const char *Name) {
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StringRef NameRef = Name;
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for (TargetRegistry::iterator IT = TargetRegistry::begin(),
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IE = TargetRegistry::end(); IT != IE; ++IT) {
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if (IT->getName() == NameRef)
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return wrap(&*IT);
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}
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return nullptr;
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}
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LLVMBool LLVMGetTargetFromTriple(const char* TripleStr, LLVMTargetRef *T,
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char **ErrorMessage) {
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std::string Error;
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*T = wrap(TargetRegistry::lookupTarget(TripleStr, Error));
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if (!*T) {
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if (ErrorMessage)
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*ErrorMessage = strdup(Error.c_str());
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return 1;
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}
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return 0;
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}
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const char * LLVMGetTargetName(LLVMTargetRef T) {
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return unwrap(T)->getName();
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}
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const char * LLVMGetTargetDescription(LLVMTargetRef T) {
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return unwrap(T)->getShortDescription();
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}
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LLVMBool LLVMTargetHasJIT(LLVMTargetRef T) {
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return unwrap(T)->hasJIT();
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}
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LLVMBool LLVMTargetHasTargetMachine(LLVMTargetRef T) {
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return unwrap(T)->hasTargetMachine();
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}
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LLVMBool LLVMTargetHasAsmBackend(LLVMTargetRef T) {
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return unwrap(T)->hasMCAsmBackend();
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}
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LLVMTargetMachineRef LLVMCreateTargetMachine(LLVMTargetRef T,
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const char* Triple, const char* CPU, const char* Features,
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LLVMCodeGenOptLevel Level, LLVMRelocMode Reloc,
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LLVMCodeModel CodeModel) {
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Reloc::Model RM;
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switch (Reloc){
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case LLVMRelocStatic:
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RM = Reloc::Static;
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break;
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case LLVMRelocPIC:
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RM = Reloc::PIC_;
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break;
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case LLVMRelocDynamicNoPic:
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RM = Reloc::DynamicNoPIC;
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break;
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default:
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RM = Reloc::Default;
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break;
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}
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CodeModel::Model CM = unwrap(CodeModel);
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CodeGenOpt::Level OL;
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switch (Level) {
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case LLVMCodeGenLevelNone:
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OL = CodeGenOpt::None;
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break;
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case LLVMCodeGenLevelLess:
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OL = CodeGenOpt::Less;
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break;
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case LLVMCodeGenLevelAggressive:
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OL = CodeGenOpt::Aggressive;
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break;
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default:
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OL = CodeGenOpt::Default;
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break;
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}
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TargetOptions opt;
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return wrap(unwrap(T)->createTargetMachine(Triple, CPU, Features, opt, RM,
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CM, OL));
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}
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void LLVMDisposeTargetMachine(LLVMTargetMachineRef T) {
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delete unwrap(T);
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}
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LLVMTargetRef LLVMGetTargetMachineTarget(LLVMTargetMachineRef T) {
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const Target* target = &(unwrap(T)->getTarget());
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return wrap(target);
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}
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char* LLVMGetTargetMachineTriple(LLVMTargetMachineRef T) {
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std::string StringRep = unwrap(T)->getTargetTriple();
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return strdup(StringRep.c_str());
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}
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char* LLVMGetTargetMachineCPU(LLVMTargetMachineRef T) {
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std::string StringRep = unwrap(T)->getTargetCPU();
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return strdup(StringRep.c_str());
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}
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char* LLVMGetTargetMachineFeatureString(LLVMTargetMachineRef T) {
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std::string StringRep = unwrap(T)->getTargetFeatureString();
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return strdup(StringRep.c_str());
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}
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LLVMTargetDataRef LLVMGetTargetMachineData(LLVMTargetMachineRef T) {
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return wrap(unwrap(T)->getDataLayout());
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}
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void LLVMSetTargetMachineAsmVerbosity(LLVMTargetMachineRef T,
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LLVMBool VerboseAsm) {
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unwrap(T)->Options.MCOptions.AsmVerbose = VerboseAsm;
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}
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static LLVMBool LLVMTargetMachineEmit(LLVMTargetMachineRef T, LLVMModuleRef M,
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formatted_raw_ostream &OS, LLVMCodeGenFileType codegen, char **ErrorMessage) {
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TargetMachine* TM = unwrap(T);
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Module* Mod = unwrap(M);
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legacy::PassManager pass;
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std::string error;
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const DataLayout *td = TM->getDataLayout();
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if (!td) {
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error = "No DataLayout in TargetMachine";
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*ErrorMessage = strdup(error.c_str());
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return true;
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}
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Mod->setDataLayout(*td);
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TargetMachine::CodeGenFileType ft;
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switch (codegen) {
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case LLVMAssemblyFile:
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ft = TargetMachine::CGFT_AssemblyFile;
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break;
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default:
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ft = TargetMachine::CGFT_ObjectFile;
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break;
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}
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if (TM->addPassesToEmitFile(pass, OS, ft)) {
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error = "TargetMachine can't emit a file of this type";
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*ErrorMessage = strdup(error.c_str());
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return true;
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}
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pass.run(*Mod);
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OS.flush();
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return false;
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}
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LLVMBool LLVMTargetMachineEmitToFile(LLVMTargetMachineRef T, LLVMModuleRef M,
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char* Filename, LLVMCodeGenFileType codegen, char** ErrorMessage) {
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std::error_code EC;
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raw_fd_ostream dest(Filename, EC, sys::fs::F_None);
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if (EC) {
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*ErrorMessage = strdup(EC.message().c_str());
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return true;
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}
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formatted_raw_ostream destf(dest);
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bool Result = LLVMTargetMachineEmit(T, M, destf, codegen, ErrorMessage);
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dest.flush();
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return Result;
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}
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LLVMBool LLVMTargetMachineEmitToMemoryBuffer(LLVMTargetMachineRef T,
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LLVMModuleRef M, LLVMCodeGenFileType codegen, char** ErrorMessage,
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LLVMMemoryBufferRef *OutMemBuf) {
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std::string CodeString;
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raw_string_ostream OStream(CodeString);
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formatted_raw_ostream Out(OStream);
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bool Result = LLVMTargetMachineEmit(T, M, Out, codegen, ErrorMessage);
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OStream.flush();
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std::string &Data = OStream.str();
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*OutMemBuf = LLVMCreateMemoryBufferWithMemoryRangeCopy(Data.c_str(),
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Data.length(), "");
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return Result;
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}
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char *LLVMGetDefaultTargetTriple(void) {
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return strdup(sys::getDefaultTargetTriple().c_str());
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}
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void LLVMAddAnalysisPasses(LLVMTargetMachineRef T, LLVMPassManagerRef PM) {
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unwrap(PM)->add(
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createTargetTransformInfoWrapperPass(unwrap(T)->getTargetIRAnalysis()));
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}
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