f785676f2a
all of the features in the current working draft of the upcoming C++ standard, provisionally named C++1y. The code generator's performance is greatly increased, and the loop auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The PowerPC backend has made several major improvements to code generation quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ backends have all seen major feature work. Release notes for llvm and clang can be found here: <http://llvm.org/releases/3.4/docs/ReleaseNotes.html> <http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html> MFC after: 1 month
440 lines
15 KiB
C++
440 lines
15 KiB
C++
//===-- ExecutionEngineBindings.cpp - C bindings for EEs ------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the C bindings for the ExecutionEngine library.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "jit"
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#include "llvm-c/ExecutionEngine.h"
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#include "llvm/ExecutionEngine/ExecutionEngine.h"
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#include "llvm/ExecutionEngine/GenericValue.h"
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#include "llvm/ExecutionEngine/RTDyldMemoryManager.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/ErrorHandling.h"
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#include <cstring>
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using namespace llvm;
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// Wrapping the C bindings types.
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DEFINE_SIMPLE_CONVERSION_FUNCTIONS(GenericValue, LLVMGenericValueRef)
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inline DataLayout *unwrap(LLVMTargetDataRef P) {
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return reinterpret_cast<DataLayout*>(P);
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}
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inline LLVMTargetDataRef wrap(const DataLayout *P) {
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return reinterpret_cast<LLVMTargetDataRef>(const_cast<DataLayout*>(P));
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}
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inline TargetLibraryInfo *unwrap(LLVMTargetLibraryInfoRef P) {
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return reinterpret_cast<TargetLibraryInfo*>(P);
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}
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inline LLVMTargetLibraryInfoRef wrap(const TargetLibraryInfo *P) {
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TargetLibraryInfo *X = const_cast<TargetLibraryInfo*>(P);
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return reinterpret_cast<LLVMTargetLibraryInfoRef>(X);
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}
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/*===-- Operations on generic values --------------------------------------===*/
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LLVMGenericValueRef LLVMCreateGenericValueOfInt(LLVMTypeRef Ty,
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unsigned long long N,
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LLVMBool IsSigned) {
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GenericValue *GenVal = new GenericValue();
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GenVal->IntVal = APInt(unwrap<IntegerType>(Ty)->getBitWidth(), N, IsSigned);
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return wrap(GenVal);
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}
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LLVMGenericValueRef LLVMCreateGenericValueOfPointer(void *P) {
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GenericValue *GenVal = new GenericValue();
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GenVal->PointerVal = P;
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return wrap(GenVal);
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}
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LLVMGenericValueRef LLVMCreateGenericValueOfFloat(LLVMTypeRef TyRef, double N) {
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GenericValue *GenVal = new GenericValue();
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switch (unwrap(TyRef)->getTypeID()) {
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case Type::FloatTyID:
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GenVal->FloatVal = N;
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break;
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case Type::DoubleTyID:
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GenVal->DoubleVal = N;
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break;
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default:
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llvm_unreachable("LLVMGenericValueToFloat supports only float and double.");
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}
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return wrap(GenVal);
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}
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unsigned LLVMGenericValueIntWidth(LLVMGenericValueRef GenValRef) {
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return unwrap(GenValRef)->IntVal.getBitWidth();
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}
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unsigned long long LLVMGenericValueToInt(LLVMGenericValueRef GenValRef,
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LLVMBool IsSigned) {
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GenericValue *GenVal = unwrap(GenValRef);
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if (IsSigned)
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return GenVal->IntVal.getSExtValue();
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else
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return GenVal->IntVal.getZExtValue();
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}
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void *LLVMGenericValueToPointer(LLVMGenericValueRef GenVal) {
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return unwrap(GenVal)->PointerVal;
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}
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double LLVMGenericValueToFloat(LLVMTypeRef TyRef, LLVMGenericValueRef GenVal) {
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switch (unwrap(TyRef)->getTypeID()) {
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case Type::FloatTyID:
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return unwrap(GenVal)->FloatVal;
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case Type::DoubleTyID:
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return unwrap(GenVal)->DoubleVal;
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default:
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llvm_unreachable("LLVMGenericValueToFloat supports only float and double.");
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}
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}
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void LLVMDisposeGenericValue(LLVMGenericValueRef GenVal) {
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delete unwrap(GenVal);
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}
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/*===-- Operations on execution engines -----------------------------------===*/
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LLVMBool LLVMCreateExecutionEngineForModule(LLVMExecutionEngineRef *OutEE,
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LLVMModuleRef M,
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char **OutError) {
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std::string Error;
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EngineBuilder builder(unwrap(M));
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builder.setEngineKind(EngineKind::Either)
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.setErrorStr(&Error);
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if (ExecutionEngine *EE = builder.create()){
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*OutEE = wrap(EE);
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return 0;
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}
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*OutError = strdup(Error.c_str());
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return 1;
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}
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LLVMBool LLVMCreateInterpreterForModule(LLVMExecutionEngineRef *OutInterp,
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LLVMModuleRef M,
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char **OutError) {
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std::string Error;
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EngineBuilder builder(unwrap(M));
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builder.setEngineKind(EngineKind::Interpreter)
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.setErrorStr(&Error);
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if (ExecutionEngine *Interp = builder.create()) {
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*OutInterp = wrap(Interp);
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return 0;
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}
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*OutError = strdup(Error.c_str());
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return 1;
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}
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LLVMBool LLVMCreateJITCompilerForModule(LLVMExecutionEngineRef *OutJIT,
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LLVMModuleRef M,
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unsigned OptLevel,
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char **OutError) {
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std::string Error;
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EngineBuilder builder(unwrap(M));
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builder.setEngineKind(EngineKind::JIT)
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.setErrorStr(&Error)
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.setOptLevel((CodeGenOpt::Level)OptLevel);
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if (ExecutionEngine *JIT = builder.create()) {
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*OutJIT = wrap(JIT);
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return 0;
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}
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*OutError = strdup(Error.c_str());
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return 1;
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}
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void LLVMInitializeMCJITCompilerOptions(LLVMMCJITCompilerOptions *PassedOptions,
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size_t SizeOfPassedOptions) {
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LLVMMCJITCompilerOptions options;
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memset(&options, 0, sizeof(options)); // Most fields are zero by default.
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options.CodeModel = LLVMCodeModelJITDefault;
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memcpy(PassedOptions, &options,
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std::min(sizeof(options), SizeOfPassedOptions));
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}
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LLVMBool LLVMCreateMCJITCompilerForModule(
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LLVMExecutionEngineRef *OutJIT, LLVMModuleRef M,
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LLVMMCJITCompilerOptions *PassedOptions, size_t SizeOfPassedOptions,
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char **OutError) {
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LLVMMCJITCompilerOptions options;
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// If the user passed a larger sized options struct, then they were compiled
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// against a newer LLVM. Tell them that something is wrong.
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if (SizeOfPassedOptions > sizeof(options)) {
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*OutError = strdup(
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"Refusing to use options struct that is larger than my own; assuming "
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"LLVM library mismatch.");
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return 1;
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}
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// Defend against the user having an old version of the API by ensuring that
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// any fields they didn't see are cleared. We must defend against fields being
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// set to the bitwise equivalent of zero, and assume that this means "do the
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// default" as if that option hadn't been available.
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LLVMInitializeMCJITCompilerOptions(&options, sizeof(options));
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memcpy(&options, PassedOptions, SizeOfPassedOptions);
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TargetOptions targetOptions;
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targetOptions.NoFramePointerElim = options.NoFramePointerElim;
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targetOptions.EnableFastISel = options.EnableFastISel;
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std::string Error;
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EngineBuilder builder(unwrap(M));
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builder.setEngineKind(EngineKind::JIT)
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.setErrorStr(&Error)
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.setUseMCJIT(true)
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.setOptLevel((CodeGenOpt::Level)options.OptLevel)
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.setCodeModel(unwrap(options.CodeModel))
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.setTargetOptions(targetOptions);
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if (options.MCJMM)
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builder.setMCJITMemoryManager(unwrap(options.MCJMM));
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if (ExecutionEngine *JIT = builder.create()) {
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*OutJIT = wrap(JIT);
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return 0;
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}
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*OutError = strdup(Error.c_str());
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return 1;
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}
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LLVMBool LLVMCreateExecutionEngine(LLVMExecutionEngineRef *OutEE,
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LLVMModuleProviderRef MP,
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char **OutError) {
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/* The module provider is now actually a module. */
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return LLVMCreateExecutionEngineForModule(OutEE,
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reinterpret_cast<LLVMModuleRef>(MP),
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OutError);
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}
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LLVMBool LLVMCreateInterpreter(LLVMExecutionEngineRef *OutInterp,
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LLVMModuleProviderRef MP,
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char **OutError) {
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/* The module provider is now actually a module. */
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return LLVMCreateInterpreterForModule(OutInterp,
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reinterpret_cast<LLVMModuleRef>(MP),
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OutError);
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}
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LLVMBool LLVMCreateJITCompiler(LLVMExecutionEngineRef *OutJIT,
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LLVMModuleProviderRef MP,
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unsigned OptLevel,
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char **OutError) {
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/* The module provider is now actually a module. */
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return LLVMCreateJITCompilerForModule(OutJIT,
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reinterpret_cast<LLVMModuleRef>(MP),
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OptLevel, OutError);
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}
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void LLVMDisposeExecutionEngine(LLVMExecutionEngineRef EE) {
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delete unwrap(EE);
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}
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void LLVMRunStaticConstructors(LLVMExecutionEngineRef EE) {
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unwrap(EE)->runStaticConstructorsDestructors(false);
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}
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void LLVMRunStaticDestructors(LLVMExecutionEngineRef EE) {
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unwrap(EE)->runStaticConstructorsDestructors(true);
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}
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int LLVMRunFunctionAsMain(LLVMExecutionEngineRef EE, LLVMValueRef F,
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unsigned ArgC, const char * const *ArgV,
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const char * const *EnvP) {
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unwrap(EE)->finalizeObject();
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std::vector<std::string> ArgVec;
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for (unsigned I = 0; I != ArgC; ++I)
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ArgVec.push_back(ArgV[I]);
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return unwrap(EE)->runFunctionAsMain(unwrap<Function>(F), ArgVec, EnvP);
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}
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LLVMGenericValueRef LLVMRunFunction(LLVMExecutionEngineRef EE, LLVMValueRef F,
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unsigned NumArgs,
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LLVMGenericValueRef *Args) {
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unwrap(EE)->finalizeObject();
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std::vector<GenericValue> ArgVec;
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ArgVec.reserve(NumArgs);
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for (unsigned I = 0; I != NumArgs; ++I)
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ArgVec.push_back(*unwrap(Args[I]));
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GenericValue *Result = new GenericValue();
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*Result = unwrap(EE)->runFunction(unwrap<Function>(F), ArgVec);
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return wrap(Result);
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}
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void LLVMFreeMachineCodeForFunction(LLVMExecutionEngineRef EE, LLVMValueRef F) {
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unwrap(EE)->freeMachineCodeForFunction(unwrap<Function>(F));
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}
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void LLVMAddModule(LLVMExecutionEngineRef EE, LLVMModuleRef M){
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unwrap(EE)->addModule(unwrap(M));
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}
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void LLVMAddModuleProvider(LLVMExecutionEngineRef EE, LLVMModuleProviderRef MP){
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/* The module provider is now actually a module. */
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LLVMAddModule(EE, reinterpret_cast<LLVMModuleRef>(MP));
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}
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LLVMBool LLVMRemoveModule(LLVMExecutionEngineRef EE, LLVMModuleRef M,
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LLVMModuleRef *OutMod, char **OutError) {
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Module *Mod = unwrap(M);
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unwrap(EE)->removeModule(Mod);
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*OutMod = wrap(Mod);
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return 0;
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}
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LLVMBool LLVMRemoveModuleProvider(LLVMExecutionEngineRef EE,
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LLVMModuleProviderRef MP,
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LLVMModuleRef *OutMod, char **OutError) {
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/* The module provider is now actually a module. */
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return LLVMRemoveModule(EE, reinterpret_cast<LLVMModuleRef>(MP), OutMod,
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OutError);
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}
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LLVMBool LLVMFindFunction(LLVMExecutionEngineRef EE, const char *Name,
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LLVMValueRef *OutFn) {
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if (Function *F = unwrap(EE)->FindFunctionNamed(Name)) {
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*OutFn = wrap(F);
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return 0;
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}
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return 1;
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}
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void *LLVMRecompileAndRelinkFunction(LLVMExecutionEngineRef EE,
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LLVMValueRef Fn) {
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return unwrap(EE)->recompileAndRelinkFunction(unwrap<Function>(Fn));
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}
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LLVMTargetDataRef LLVMGetExecutionEngineTargetData(LLVMExecutionEngineRef EE) {
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return wrap(unwrap(EE)->getDataLayout());
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}
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void LLVMAddGlobalMapping(LLVMExecutionEngineRef EE, LLVMValueRef Global,
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void* Addr) {
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unwrap(EE)->addGlobalMapping(unwrap<GlobalValue>(Global), Addr);
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}
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void *LLVMGetPointerToGlobal(LLVMExecutionEngineRef EE, LLVMValueRef Global) {
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unwrap(EE)->finalizeObject();
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return unwrap(EE)->getPointerToGlobal(unwrap<GlobalValue>(Global));
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}
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/*===-- Operations on memory managers -------------------------------------===*/
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namespace {
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struct SimpleBindingMMFunctions {
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LLVMMemoryManagerAllocateCodeSectionCallback AllocateCodeSection;
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LLVMMemoryManagerAllocateDataSectionCallback AllocateDataSection;
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LLVMMemoryManagerFinalizeMemoryCallback FinalizeMemory;
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LLVMMemoryManagerDestroyCallback Destroy;
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};
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class SimpleBindingMemoryManager : public RTDyldMemoryManager {
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public:
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SimpleBindingMemoryManager(const SimpleBindingMMFunctions& Functions,
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void *Opaque);
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virtual ~SimpleBindingMemoryManager();
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virtual uint8_t *allocateCodeSection(
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uintptr_t Size, unsigned Alignment, unsigned SectionID,
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StringRef SectionName);
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virtual uint8_t *allocateDataSection(
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uintptr_t Size, unsigned Alignment, unsigned SectionID,
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StringRef SectionName, bool isReadOnly);
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virtual bool finalizeMemory(std::string *ErrMsg);
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private:
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SimpleBindingMMFunctions Functions;
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void *Opaque;
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};
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SimpleBindingMemoryManager::SimpleBindingMemoryManager(
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const SimpleBindingMMFunctions& Functions,
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void *Opaque)
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: Functions(Functions), Opaque(Opaque) {
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assert(Functions.AllocateCodeSection &&
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"No AllocateCodeSection function provided!");
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assert(Functions.AllocateDataSection &&
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"No AllocateDataSection function provided!");
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assert(Functions.FinalizeMemory &&
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"No FinalizeMemory function provided!");
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assert(Functions.Destroy &&
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"No Destroy function provided!");
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}
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SimpleBindingMemoryManager::~SimpleBindingMemoryManager() {
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Functions.Destroy(Opaque);
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}
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uint8_t *SimpleBindingMemoryManager::allocateCodeSection(
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uintptr_t Size, unsigned Alignment, unsigned SectionID,
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StringRef SectionName) {
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return Functions.AllocateCodeSection(Opaque, Size, Alignment, SectionID,
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SectionName.str().c_str());
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}
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uint8_t *SimpleBindingMemoryManager::allocateDataSection(
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uintptr_t Size, unsigned Alignment, unsigned SectionID,
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StringRef SectionName, bool isReadOnly) {
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return Functions.AllocateDataSection(Opaque, Size, Alignment, SectionID,
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SectionName.str().c_str(),
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isReadOnly);
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}
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bool SimpleBindingMemoryManager::finalizeMemory(std::string *ErrMsg) {
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char *errMsgCString = 0;
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bool result = Functions.FinalizeMemory(Opaque, &errMsgCString);
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assert((result || !errMsgCString) &&
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"Did not expect an error message if FinalizeMemory succeeded");
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if (errMsgCString) {
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if (ErrMsg)
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*ErrMsg = errMsgCString;
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free(errMsgCString);
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}
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return result;
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}
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} // anonymous namespace
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LLVMMCJITMemoryManagerRef LLVMCreateSimpleMCJITMemoryManager(
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void *Opaque,
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LLVMMemoryManagerAllocateCodeSectionCallback AllocateCodeSection,
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LLVMMemoryManagerAllocateDataSectionCallback AllocateDataSection,
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LLVMMemoryManagerFinalizeMemoryCallback FinalizeMemory,
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LLVMMemoryManagerDestroyCallback Destroy) {
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if (!AllocateCodeSection || !AllocateDataSection || !FinalizeMemory ||
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!Destroy)
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return NULL;
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SimpleBindingMMFunctions functions;
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functions.AllocateCodeSection = AllocateCodeSection;
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functions.AllocateDataSection = AllocateDataSection;
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functions.FinalizeMemory = FinalizeMemory;
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functions.Destroy = Destroy;
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return wrap(new SimpleBindingMemoryManager(functions, Opaque));
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}
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void LLVMDisposeMCJITMemoryManager(LLVMMCJITMemoryManagerRef MM) {
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delete unwrap(MM);
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}
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