src/gallium/drivers/swr/rasterizer/jitter/JitManager.h

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  23 * @file JitManager.h
  24 *
  25 * @brief JitManager contains the LLVM data structures used for JIT generation
  26 *
  27 * Notes:
  28 *
  29 ******************************************************************************/
  30 #pragma once
  31
  32 #include "common/os.h"
  33 #include "common/isa.hpp"
  34
  35 #if defined(_WIN32)
  36 #pragma warning(disable : 4146 4244 4267 4800 4996)
  37 #endif
  38
  39 // llvm 3.7+ reuses "DEBUG" as an enum value
  40 #pragma push_macro("DEBUG")
  41 #undef DEBUG
  42
  43 #include "llvm/IR/DataLayout.h"
  44 #include "llvm/IR/Instructions.h"
  45 #include "llvm/IR/LLVMContext.h"
  46 #include "llvm/IR/Module.h"
  47 #include "llvm/IR/Type.h"
  48 #include "llvm/IR/IRBuilder.h"
  49 #include "llvm/IR/IntrinsicInst.h"
  50
  51 #include "llvm/Config/llvm-config.h"
  52 #ifndef LLVM_VERSION_MAJOR
  53 #include "llvm/Config/config.h"
  54 #endif
  55
  56 #ifndef HAVE_LLVM
  57 #define HAVE_LLVM (LLVM_VERSION_MAJOR << 8) || LLVM_VERSION_MINOR
  58 #endif
  59
  60 #include "llvm/IR/Verifier.h"
  61 #include "llvm/ExecutionEngine/MCJIT.h"
  62 #include "llvm/Support/FileSystem.h"
  63 #define LLVM_F_NONE sys::fs::F_None
  64
  65 #include "llvm/Analysis/Passes.h"
  66
  67 #if HAVE_LLVM == 0x306
  68 #include "llvm/PassManager.h"
  69 #else
  70 #include "llvm/IR/LegacyPassManager.h"
  71 #endif
  72
  73 #include "llvm/CodeGen/Passes.h"
  74 #include "llvm/ExecutionEngine/ExecutionEngine.h"
  75 #include "llvm/Support/raw_ostream.h"
  76 #include "llvm/Support/TargetSelect.h"
  77 #include "llvm/Transforms/IPO.h"
  78 #include "llvm/Transforms/Scalar.h"
  79 #include "llvm/Support/Host.h"
  80
  81
  82 #pragma pop_macro("DEBUG")
  83
  84 using namespace llvm;
  85 //////////////////////////////////////////////////////////////////////////
  86 /// JitInstructionSet
  87 /// @brief Subclass of InstructionSet that allows users to override
  88 /// the reporting of support for certain ISA features.  This allows capping
  89 /// the jitted code to a certain feature level, e.g. jit AVX level code on
  90 /// a platform that supports AVX2.
  91 //////////////////////////////////////////////////////////////////////////
  92 class JitInstructionSet : public InstructionSet
  93 {
  94 public:
  95     JitInstructionSet(const char* requestedIsa) : isaRequest(requestedIsa)
  96     {
  97         std::transform(isaRequest.begin(), isaRequest.end(), isaRequest.begin(), ::tolower);
  98
  99         if(isaRequest == "avx")
 100         {
 101             bForceAVX = true;
 102             bForceAVX2 = false;
 103             bForceAVX512 = false;
 104         }
 105         else if(isaRequest == "avx2")
 106         {
 107             bForceAVX = false;
 108             bForceAVX2 = true;
 109             bForceAVX512 = false;
 110         }
 111         #if 0
 112         else if(isaRequest == "avx512")
 113         {
 114             bForceAVX = false;
 115             bForceAVX2 = false;
 116             bForceAVX512 = true;
 117         }
 118         #endif
 119     };
 120
 121     bool AVX2(void) { return bForceAVX ? 0 : InstructionSet::AVX2(); }
 122     bool AVX512F(void) { return (bForceAVX | bForceAVX2) ? 0 : InstructionSet::AVX512F(); }
 123     bool BMI2(void) { return bForceAVX ? 0 : InstructionSet::BMI2(); }
 124
 125 private:
 126     bool bForceAVX = false;
 127     bool bForceAVX2 = false;
 128     bool bForceAVX512 = false;
 129     std::string isaRequest;
 130 };
 131
 132
 133
 134 struct JitLLVMContext : LLVMContext
 135 {
 136 };
 137
 138
 139 //////////////////////////////////////////////////////////////////////////
 140 /// JitManager
 141 //////////////////////////////////////////////////////////////////////////
 142 struct JitManager
 143 {
 144     JitManager(uint32_t w, const char *arch);
 145     ~JitManager(){};
 146
 147     JitLLVMContext          mContext;   ///< LLVM compiler
 148     IRBuilder<>             mBuilder;   ///< LLVM IR Builder
 149     ExecutionEngine*        mpExec;
 150
 151     // Need to be rebuilt after a JIT and before building new IR
 152     Module* mpCurrentModule;
 153     bool mIsModuleFinalized;
 154     uint32_t mJitNumber;
 155
 156     uint32_t                 mVWidth;
 157
 158     // Built in types.
 159     Type*                mInt8Ty;
 160     Type*                mInt32Ty;
 161     Type*                mInt64Ty;
 162     Type*                mFP32Ty;
 163     StructType*          mV4FP32Ty;
 164     StructType*          mV4Int32Ty;
 165
 166     // helper scalar function types
 167     FunctionType* mUnaryFPTy;
 168     FunctionType* mBinaryFPTy;
 169     FunctionType* mTrinaryFPTy;
 170     FunctionType* mUnaryIntTy;
 171     FunctionType* mBinaryIntTy;
 172
 173     Type* mSimtFP32Ty;
 174     Type* mSimtInt32Ty;
 175
 176     Type* mSimdVectorInt32Ty;
 177     Type* mSimdVectorTy;
 178
 179     // fetch shader types
 180     FunctionType*        mFetchShaderTy;
 181
 182     JitInstructionSet mArch;
 183
 184     void SetupNewModule();
 185     bool SetupModuleFromIR(const uint8_t *pIR);
 186
 187     static void DumpToFile(Function *f, const char *fileName);
 188 };