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/*
* Copyright 2011 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors: Tom Stellard <thomas.stellard@amd.com>
*
*/
#include "radeon_llvm_emit.h"
#include <llvm/LLVMContext.h>
#include <llvm/Module.h>
#include <llvm/PassManager.h>
#include <llvm/ADT/Triple.h>
#include <llvm/Support/FormattedStream.h>
#include <llvm/Support/Host.h>
#include <llvm/Support/IRReader.h>
#include <llvm/Support/SourceMgr.h>
#include <llvm/Support/TargetRegistry.h>
#include <llvm/Support/TargetSelect.h>
#include <llvm/Support/Threading.h>
#include <llvm/Target/TargetData.h>
#include <llvm/Target/TargetMachine.h>
#include <llvm/Transforms/Scalar.h>
#include <llvm-c/Target.h>
#include <iostream>
#include <stdlib.h>
#include <stdio.h>
using namespace llvm;
#ifndef EXTERNAL_LLVM
extern "C" {
void LLVMInitializeAMDGPUTargetMC(void);
void LLVMInitializeAMDGPUTarget(void);
void LLVMInitializeAMDGPUTargetInfo(void);
}
#endif
namespace {
class LLVMEnsureMultithreaded {
public:
LLVMEnsureMultithreaded()
{
llvm_start_multithreaded();
}
};
static LLVMEnsureMultithreaded lLVMEnsureMultithreaded;
}
/**
* Compile an LLVM module to machine code.
*
* @param bytes This function allocates memory for the byte stream, it is the
* caller's responsibility to free it.
*/
extern "C" unsigned
radeon_llvm_compile(LLVMModuleRef M, unsigned char ** bytes,
unsigned * byte_count, const char * gpu_family,
unsigned dump) {
Triple AMDGPUTriple(sys::getDefaultTargetTriple());
#ifdef EXTERNAL_LLVM
/* XXX: Can we just initialize the AMDGPU target here? */
InitializeAllTargets();
InitializeAllTargetMCs();
#else
LLVMInitializeAMDGPUTargetInfo();
LLVMInitializeAMDGPUTarget();
LLVMInitializeAMDGPUTargetMC();
#endif
std::string err;
const Target * AMDGPUTarget = TargetRegistry::lookupTarget("r600", err);
if(!AMDGPUTarget) {
fprintf(stderr, "Can't find target: %s\n", err.c_str());
return 1;
}
Triple::ArchType Arch = Triple::getArchTypeForLLVMName("r600");
if (Arch == Triple::UnknownArch) {
fprintf(stderr, "Unknown Arch\n");
}
AMDGPUTriple.setArch(Arch);
Module * mod = unwrap(M);
std::string FS;
TargetOptions TO;
if (dump) {
mod->dump();
FS += "+DumpCode";
}
std::auto_ptr<TargetMachine> tm(AMDGPUTarget->createTargetMachine(
AMDGPUTriple.getTriple(), gpu_family, FS,
TO, Reloc::Default, CodeModel::Default,
CodeGenOpt::Default
));
TargetMachine &AMDGPUTargetMachine = *tm.get();
PassManager PM;
PM.add(new TargetData(*AMDGPUTargetMachine.getTargetData()));
PM.add(createPromoteMemoryToRegisterPass());
AMDGPUTargetMachine.setAsmVerbosityDefault(true);
std::string CodeString;
raw_string_ostream oStream(CodeString);
formatted_raw_ostream out(oStream);
/* Optional extra paramater true / false to disable verify */
if (AMDGPUTargetMachine.addPassesToEmitFile(PM, out, TargetMachine::CGFT_AssemblyFile,
true)){
fprintf(stderr, "AddingPasses failed.\n");
return 1;
}
PM.run(*mod);
out.flush();
std::string &data = oStream.str();
*bytes = (unsigned char*)malloc(data.length() * sizeof(unsigned char));
memcpy(*bytes, data.c_str(), data.length() * sizeof(unsigned char));
*byte_count = data.length();
return 0;
}
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