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/****************************************************************************
* Copyright (C) 2014-2015 Intel Corporation. All Rights Reserved.
*
* 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.
*
* @file JitManager.h
*
* @brief JitManager contains the LLVM data structures used for JIT generation
*
* Notes:
*
******************************************************************************/
#pragma once
#if defined(_WIN32)
#pragma warning(disable : 4146 4244 4267 4800 4996)
#endif
// llvm 3.7+ reuses "DEBUG" as an enum value
#pragma push_macro("DEBUG")
#undef DEBUG
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/Config/llvm-config.h"
#ifndef LLVM_VERSION_MAJOR
#include "llvm/Config/config.h"
#endif
#ifndef HAVE_LLVM
#define HAVE_LLVM ((LLVM_VERSION_MAJOR << 8) | LLVM_VERSION_MINOR)
#endif
#include "llvm/IR/Verifier.h"
#include "llvm/ExecutionEngine/MCJIT.h"
#include "llvm/Support/FileSystem.h"
#define LLVM_F_NONE sys::fs::F_None
#include "llvm/Analysis/Passes.h"
#if HAVE_LLVM == 0x306
#include "llvm/PassManager.h"
using FunctionPassManager = llvm::FunctionPassManager;
using PassManager = llvm::PassManager;
#else
#include "llvm/IR/LegacyPassManager.h"
using FunctionPassManager = llvm::legacy::FunctionPassManager;
using PassManager = llvm::legacy::PassManager;
#endif
#include "llvm/CodeGen/Passes.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Transforms/IPO.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/DynamicLibrary.h"
#include "common/os.h"
#include "common/isa.hpp"
#pragma pop_macro("DEBUG")
//////////////////////////////////////////////////////////////////////////
/// JitInstructionSet
/// @brief Subclass of InstructionSet that allows users to override
/// the reporting of support for certain ISA features. This allows capping
/// the jitted code to a certain feature level, e.g. jit AVX level code on
/// a platform that supports AVX2.
//////////////////////////////////////////////////////////////////////////
class JitInstructionSet : public InstructionSet
{
public:
JitInstructionSet(const char* requestedIsa) : isaRequest(requestedIsa)
{
std::transform(isaRequest.begin(), isaRequest.end(), isaRequest.begin(), ::tolower);
if(isaRequest == "avx")
{
bForceAVX = true;
bForceAVX2 = false;
bForceAVX512 = false;
}
else if(isaRequest == "avx2")
{
bForceAVX = false;
bForceAVX2 = true;
bForceAVX512 = false;
}
#if 0
else if(isaRequest == "avx512")
{
bForceAVX = false;
bForceAVX2 = false;
bForceAVX512 = true;
}
#endif
};
bool AVX2(void) { return bForceAVX ? 0 : InstructionSet::AVX2(); }
bool AVX512F(void) { return (bForceAVX | bForceAVX2) ? 0 : InstructionSet::AVX512F(); }
bool BMI2(void) { return bForceAVX ? 0 : InstructionSet::BMI2(); }
private:
bool bForceAVX = false;
bool bForceAVX2 = false;
bool bForceAVX512 = false;
std::string isaRequest;
};
struct JitLLVMContext : llvm::LLVMContext
{
};
//////////////////////////////////////////////////////////////////////////
/// JitManager
//////////////////////////////////////////////////////////////////////////
struct JitManager
{
JitManager(uint32_t w, const char* arch, const char* core);
~JitManager(){};
JitLLVMContext mContext; ///< LLVM compiler
llvm::IRBuilder<> mBuilder; ///< LLVM IR Builder
llvm::ExecutionEngine* mpExec;
// Need to be rebuilt after a JIT and before building new IR
llvm::Module* mpCurrentModule;
bool mIsModuleFinalized;
uint32_t mJitNumber;
uint32_t mVWidth;
// Built in types.
llvm::Type* mInt8Ty;
llvm::Type* mInt32Ty;
llvm::Type* mInt64Ty;
llvm::Type* mFP32Ty;
llvm::Type* mSimtFP32Ty;
llvm::Type* mSimtInt32Ty;
llvm::Type* mSimdVectorInt32Ty;
llvm::Type* mSimdVectorTy;
// fetch shader types
llvm::FunctionType* mFetchShaderTy;
JitInstructionSet mArch;
std::string mCore;
void SetupNewModule();
bool SetupModuleFromIR(const uint8_t *pIR);
void DumpAsm(llvm::Function* pFunction, const char* fileName);
static void DumpToFile(llvm::Function *f, const char *fileName);
};
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