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https://github.com/RPCS3/llvm-mirror.git
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f2011a3ae7
IMHO it is an antipattern to have a enum value that is Default. At any given piece of code it is not clear if we have to handle Default or if has already been mapped to a concrete value. In this case in particular, only the target can do the mapping and it is nice to make sure it is always done. This deletes the two default enum values of CodeModel and uses an explicit Optional<CodeModel> when it is possible that it is unspecified. llvm-svn: 309911
245 lines
6.9 KiB
C++
245 lines
6.9 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/Core.h"
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#include "llvm-c/Target.h"
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#include "llvm-c/TargetMachine.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/LegacyPassManager.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/CodeGenCWrappers.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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static TargetMachine *unwrap(LLVMTargetMachineRef P) {
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return reinterpret_cast<TargetMachine *>(P);
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}
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static Target *unwrap(LLVMTargetRef P) {
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return reinterpret_cast<Target*>(P);
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}
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static LLVMTargetMachineRef wrap(const TargetMachine *P) {
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return reinterpret_cast<LLVMTargetMachineRef>(const_cast<TargetMachine *>(P));
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}
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static 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::targets().begin() == TargetRegistry::targets().end()) {
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return nullptr;
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}
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const Target *target = &*TargetRegistry::targets().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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auto I = find_if(TargetRegistry::targets(),
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[&](const Target &T) { return T.getName() == NameRef; });
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return I != TargetRegistry::targets().end() ? wrap(&*I) : 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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Optional<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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break;
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}
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bool JIT;
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Optional<CodeModel::Model> CM = unwrap(CodeModel, JIT);
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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, CM,
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OL, JIT));
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}
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void LLVMDisposeTargetMachine(LLVMTargetMachineRef T) { delete unwrap(T); }
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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().str();
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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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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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LLVMTargetDataRef LLVMCreateTargetDataLayout(LLVMTargetMachineRef T) {
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return wrap(new DataLayout(unwrap(T)->createDataLayout()));
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}
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static LLVMBool LLVMTargetMachineEmit(LLVMTargetMachineRef T, LLVMModuleRef M,
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raw_pwrite_stream &OS,
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LLVMCodeGenFileType codegen,
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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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Mod->setDataLayout(TM->createDataLayout());
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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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bool Result = LLVMTargetMachineEmit(T, M, dest, 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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SmallString<0> CodeString;
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raw_svector_ostream OStream(CodeString);
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bool Result = LLVMTargetMachineEmit(T, M, OStream, codegen, ErrorMessage);
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StringRef Data = OStream.str();
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*OutMemBuf =
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LLVMCreateMemoryBufferWithMemoryRangeCopy(Data.data(), Data.size(), "");
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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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