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#include "compiler.h"
#include <clang/CodeGen/CodeGenAction.h>
#include <clang/Frontend/CompilerInvocation.h>
#include <clang/Frontend/CompilerInstance.h>
#include <clang/Frontend/DiagnosticOptions.h>
#include <clang/Frontend/HeaderSearchOptions.h>
#include <clang/Frontend/FrontendDiagnostic.h>
#include <clang/Frontend/TextDiagnosticPrinter.h>
#include <llvm/LLVMContext.h>
#include <llvm/Module.h>
#include <llvm/Config/config.h>
#include <llvm/ADT/OwningPtr.h>
#include <llvm/ADT/SmallString.h>
#include <llvm/Config/config.h>
#include <llvm/ExecutionEngine/ExecutionEngine.h>
#include <llvm/Support/ManagedStatic.h>
#include <llvm/Support/raw_ostream.h>
#include <llvm/System/Host.h>
#include <llvm/System/Path.h>
#include <llvm/Target/TargetSelect.h>
#include <iostream>
#include <fstream>
using namespace Coal;
using namespace clang;
static void
setupCodeGenOpts(CodeGenOptions &opts)
{
opts.DebugInfo = true;
//opts.OptimizationLevel = 2;
//opts.MainFileName = "main.cl";
//opts.UnrollLoops = true;
opts.AsmVerbose = true;
}
static void
setupDiagnosticOpts(DiagnosticOptions &opts)
{
opts.Pedantic = true;
opts.ShowColumn = true;
opts.ShowLocation = true;
opts.ShowCarets = true;
opts.ShowFixits = true;
opts.ShowColors = true;
opts.ErrorLimit = 19;
opts.MessageLength = 80;
//opts.Warnings[0] = "all";
}
static void
setupFrontendOpts(FrontendOptions &opts, const std::string &fileLoc)
{
opts.ProgramAction = frontend::EmitLLVMOnly;
opts.DisableFree = true;
/* XXX HACK
* just matches whatever garbage Compiler::prepareInput
* creates */
opts.Inputs.push_back(
std::make_pair(IK_OpenCL, fileLoc));
}
static void
setupHeaderSearchOpts(HeaderSearchOptions &opts)
{
opts.Verbose = true;
opts.UseBuiltinIncludes = false;
opts.UseStandardIncludes = false;
opts.UseStandardCXXIncludes = false;
std::string buildPath(COAL_BUILD_DIR);
buildPath += "/src/builtins";
opts.AddPath(buildPath,
frontend::Angled, true,
/*IsFramework=*/ false, true);
std::string installPath(COAL_INSTALL_DIR);
installPath += "/include/coal";
opts.AddPath(installPath,
frontend::Angled, true,
/*IsFramework=*/ false, true);
}
static void
setupLangOpts(LangOptions &opts)
{
opts.NoBuiltin = true;
}
static void
setupPreprocessorOpts(PreprocessorOptions &opts)
{
opts.Includes.push_back("coal-internal.h");
}
static void
setupTargetOpts(TargetOptions &opts)
{
opts.Triple = llvm::sys::getHostTriple();
//opts.CPU =
}
Compiler::Compiler()
{
init();
}
Compiler::~Compiler()
{
}
bool Compiler::init()
{
std::string tempDir = llvm::sys::Path::GetTemporaryDirectory().str();
m_tempFileLocation = tempDir + "/main.cl";
m_clang.setLLVMContext(new llvm::LLVMContext);
// Create the compilers actual diagnostics engine.
m_clang.createDiagnostics(0 ,NULL);
if (!m_clang.hasDiagnostics())
return 0;
setupHeaderSearchOpts(m_clang.getHeaderSearchOpts());
setupPreprocessorOpts(m_clang.getPreprocessorOpts());
setupCodeGenOpts(m_clang.getCodeGenOpts());
setupDiagnosticOpts(m_clang.getDiagnosticOpts());
setupFrontendOpts(m_clang.getFrontendOpts(), m_tempFileLocation);
setupLangOpts(m_clang.getLangOpts());
setupTargetOpts(m_clang.getTargetOpts());
}
llvm::Module * Compiler::compile(const std::string &text)
{
llvm::Module *module;
/* setup the input file */
prepareInput(text);
// Create and execute the frontend to generate an LLVM bitcode module.
llvm::OwningPtr<CodeGenAction> act(new EmitLLVMOnlyAction());
if (!m_clang.ExecuteAction(*act))
return 0;
module = act->takeModule();
module->dump();
return module;
}
/** XXX
* this needs to go. it's a nasty, nasty hack.
* It's also a serious security threat!
*/
void Compiler::prepareInput(const std::string &text)
{
std::string error;
std::cerr << "Output path = " << m_tempFileLocation.c_str();
std::cerr << "Prepare input = "<<text << std::endl;
std::fstream stream(m_tempFileLocation.c_str(), std::ios::out | std::ios::trunc);
stream << text;
stream.close();
}
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