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25 * @brief JitManager contains the LLVM data structures used for JIT generation
29 ******************************************************************************/
32 #include "common/os.h"
33 #include "common/isa.hpp"
36 #pragma warning(disable : 4146 4244 4267 4800 4996)
39 // llvm 3.7+ reuses "DEBUG" as an enum value
40 #pragma push_macro("DEBUG")
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"
51 #include "llvm/Config/llvm-config.h"
52 #ifndef LLVM_VERSION_MAJOR
53 #include "llvm/Config/config.h"
57 #define HAVE_LLVM ((LLVM_VERSION_MAJOR << 8) | LLVM_VERSION_MINOR)
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
65 #include "llvm/Analysis/Passes.h"
67 #if HAVE_LLVM == 0x306
68 #include "llvm/PassManager.h"
69 using FunctionPassManager
= llvm::FunctionPassManager
;
70 using PassManager
= llvm::PassManager
;
72 #include "llvm/IR/LegacyPassManager.h"
73 using FunctionPassManager
= llvm::legacy::FunctionPassManager
;
74 using PassManager
= llvm::legacy::PassManager
;
77 #include "llvm/CodeGen/Passes.h"
78 #include "llvm/ExecutionEngine/ExecutionEngine.h"
79 #include "llvm/Support/raw_ostream.h"
80 #include "llvm/Support/TargetSelect.h"
81 #include "llvm/Transforms/IPO.h"
82 #include "llvm/Transforms/Scalar.h"
83 #include "llvm/Support/Host.h"
84 #include "llvm/Support/DynamicLibrary.h"
87 #pragma pop_macro("DEBUG")
90 //////////////////////////////////////////////////////////////////////////
92 /// @brief Subclass of InstructionSet that allows users to override
93 /// the reporting of support for certain ISA features. This allows capping
94 /// the jitted code to a certain feature level, e.g. jit AVX level code on
95 /// a platform that supports AVX2.
96 //////////////////////////////////////////////////////////////////////////
97 class JitInstructionSet
: public InstructionSet
100 JitInstructionSet(const char* requestedIsa
) : isaRequest(requestedIsa
)
102 std::transform(isaRequest
.begin(), isaRequest
.end(), isaRequest
.begin(), ::tolower
);
104 if(isaRequest
== "avx")
108 bForceAVX512
= false;
110 else if(isaRequest
== "avx2")
114 bForceAVX512
= false;
117 else if(isaRequest
== "avx512")
126 bool AVX2(void) { return bForceAVX
? 0 : InstructionSet::AVX2(); }
127 bool AVX512F(void) { return (bForceAVX
| bForceAVX2
) ? 0 : InstructionSet::AVX512F(); }
128 bool BMI2(void) { return bForceAVX
? 0 : InstructionSet::BMI2(); }
131 bool bForceAVX
= false;
132 bool bForceAVX2
= false;
133 bool bForceAVX512
= false;
134 std::string isaRequest
;
139 struct JitLLVMContext
: LLVMContext
144 //////////////////////////////////////////////////////////////////////////
146 //////////////////////////////////////////////////////////////////////////
149 JitManager(uint32_t w
, const char *arch
);
152 JitLLVMContext mContext
; ///< LLVM compiler
153 IRBuilder
<> mBuilder
; ///< LLVM IR Builder
154 ExecutionEngine
* mpExec
;
156 // Need to be rebuilt after a JIT and before building new IR
157 Module
* mpCurrentModule
;
158 bool mIsModuleFinalized
;
168 StructType
* mV4FP32Ty
;
169 StructType
* mV4Int32Ty
;
174 Type
* mSimdVectorInt32Ty
;
177 // fetch shader types
178 FunctionType
* mFetchShaderTy
;
180 JitInstructionSet mArch
;
182 void SetupNewModule();
183 bool SetupModuleFromIR(const uint8_t *pIR
);
185 void DumpAsm(Function
* pFunction
, const char* fileName
);
186 static void DumpToFile(Function
*f
, const char *fileName
);