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Environment variable options for EVM JIT:

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export EVMJIT_CACHE_OFF=1   disables cache
export EVMJIT_DUMP_MODULE=1 dumps LLVM module to standard output
This commit is contained in:
Paweł Bylica 2015-01-16 16:06:35 +01:00
parent 683de93578
commit 0f53e2153a
1 changed files with 13 additions and 3 deletions
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16
libevmjit/ExecutionEngine.cpp
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@ -19,6 +19,14 @@
#include "Compiler.h" #include "Compiler.h"
#include "Cache.h" #include "Cache.h"
#if defined(NDEBUG)
#define DEBUG_ENV_OPTION(name) false
#else
#include <cstdlib>
#define DEBUG_ENV_OPTION(name) (std::getenv(#name) != nullptr)
#endif
extern "C" void env_sha3(dev::eth::jit::byte const* _begin, uint64_t _size, std::array<dev::eth::jit::byte, 32>* o_hash); extern "C" void env_sha3(dev::eth::jit::byte const* _begin, uint64_t _size, std::array<dev::eth::jit::byte, 32>* o_hash);
namespace dev namespace dev
@ -64,6 +72,8 @@ std::string codeHash(bytes const& _code)
ReturnCode ExecutionEngine::run(bytes const& _code, RuntimeData* _data, Env* _env) ReturnCode ExecutionEngine::run(bytes const& _code, RuntimeData* _data, Env* _env)
{ {
static std::unique_ptr<llvm::ExecutionEngine> ee; // TODO: Use Managed Objects from LLVM? static std::unique_ptr<llvm::ExecutionEngine> ee; // TODO: Use Managed Objects from LLVM?
static auto debugDumpModule = DEBUG_ENV_OPTION(EVMJIT_DUMP_MODULE);
static bool objectCacheEnabled = !DEBUG_ENV_OPTION(EVMJIT_CACHE_OFF);
auto mainFuncName = codeHash(_code); auto mainFuncName = codeHash(_code);
EntryFuncPtr entryFuncPtr{}; EntryFuncPtr entryFuncPtr{};
@ -74,14 +84,14 @@ ReturnCode ExecutionEngine::run(bytes const& _code, RuntimeData* _data, Env* _en
} }
else else
{ {
bool objectCacheEnabled = true;
auto objectCache = objectCacheEnabled ? Cache::getObjectCache() : nullptr; auto objectCache = objectCacheEnabled ? Cache::getObjectCache() : nullptr;
std::unique_ptr<llvm::Module> module; std::unique_ptr<llvm::Module> module;
if (objectCache) if (objectCache)
module = Cache::getObject(mainFuncName); module = Cache::getObject(mainFuncName);
if (!module) if (!module)
module = Compiler({}).compile(_code, mainFuncName); module = Compiler({}).compile(_code, mainFuncName);
//module->dump(); if (debugDumpModule)
module->dump();
if (!ee) if (!ee)
{ {
llvm::InitializeNativeTarget(); llvm::InitializeNativeTarget();
@ -92,7 +102,7 @@ ReturnCode ExecutionEngine::run(bytes const& _code, RuntimeData* _data, Env* _en
builder.setUseMCJIT(true); builder.setUseMCJIT(true);
std::unique_ptr<llvm::SectionMemoryManager> memoryManager(new llvm::SectionMemoryManager); std::unique_ptr<llvm::SectionMemoryManager> memoryManager(new llvm::SectionMemoryManager);
builder.setMCJITMemoryManager(memoryManager.get()); builder.setMCJITMemoryManager(memoryManager.get());
builder.setOptLevel(llvm::CodeGenOpt::Default); builder.setOptLevel(llvm::CodeGenOpt::None);
auto triple = llvm::Triple(llvm::sys::getProcessTriple()); auto triple = llvm::Triple(llvm::sys::getProcessTriple());
if (triple.getOS() == llvm::Triple::OSType::Win32) if (triple.getOS() == llvm::Triple::OSType::Win32)