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Exposing MCJIT through C API

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Patch by Filip Pizlo



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180229 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Kaylor
2013-04-24 23:33:53 +00:00
parent a264a20277
commit 8c31b29814
6 changed files with 249 additions and 48 deletions
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48
lib/ExecutionEngine/ExecutionEngineBindings.cpp
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@ -15,6 +15,7 @@
#include "llvm-c/ExecutionEngine.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/GenericValue.h"
#include "llvm/ExecutionEngine/SectionMemoryManager.h"
#include "llvm/Support/ErrorHandling.h"
#include <cstring>
@ -152,6 +153,47 @@ LLVMBool LLVMCreateJITCompilerForModule(LLVMExecutionEngineRef *OutJIT,
return 1;
}
LLVMBool LLVMCreateMCJITCompilerForModule(LLVMExecutionEngineRef *OutJIT,
LLVMModuleRef M,
LLVMMCJITCompilerOptions *PassedOptions,
size_t SizeOfPassedOptions,
char **OutError) {
LLVMMCJITCompilerOptions options;
// If the user passed a larger sized options struct, then they were compiled
// against a newer LLVM. Tell them that something is wrong.
if (SizeOfPassedOptions > sizeof(options)) {
*OutError = strdup(
"Refusing to use options struct that is larger than my own; assuming LLVM "
"library mismatch.");
return 1;
}
// Defend against the user having an old version of the API by ensuring that
// any fields they didn't see are cleared. We must defend against fields being
// set to the bitwise equivalent of zero, and assume that this means "do the
// default" as if that option hadn't been available.
memset(&options, 0, sizeof(options));
memcpy(&options, PassedOptions, SizeOfPassedOptions);
TargetOptions targetOptions;
targetOptions.NoFramePointerElim = options.NoFramePointerElim;
std::string Error;
EngineBuilder builder(unwrap(M));
builder.setEngineKind(EngineKind::JIT)
.setErrorStr(&Error)
.setUseMCJIT(true)
.setOptLevel((CodeGenOpt::Level)options.OptLevel)
.setJITMemoryManager(new SectionMemoryManager())
.setTargetOptions(targetOptions);
if (ExecutionEngine *JIT = builder.create()) {
*OutJIT = wrap(JIT);
return 0;
}
*OutError = strdup(Error.c_str());
return 1;
}
LLVMBool LLVMCreateExecutionEngine(LLVMExecutionEngineRef *OutEE,
LLVMModuleProviderRef MP,
char **OutError) {
@ -196,6 +238,8 @@ void LLVMRunStaticDestructors(LLVMExecutionEngineRef EE) {
int LLVMRunFunctionAsMain(LLVMExecutionEngineRef EE, LLVMValueRef F,
unsigned ArgC, const char * const *ArgV,
const char * const *EnvP) {
unwrap(EE)->finalizeObject();
std::vector<std::string> ArgVec;
for (unsigned I = 0; I != ArgC; ++I)
ArgVec.push_back(ArgV[I]);
@ -206,6 +250,8 @@ int LLVMRunFunctionAsMain(LLVMExecutionEngineRef EE, LLVMValueRef F,
LLVMGenericValueRef LLVMRunFunction(LLVMExecutionEngineRef EE, LLVMValueRef F,
unsigned NumArgs,
LLVMGenericValueRef *Args) {
unwrap(EE)->finalizeObject();
std::vector<GenericValue> ArgVec;
ArgVec.reserve(NumArgs);
for (unsigned I = 0; I != NumArgs; ++I)
@ -268,5 +314,7 @@ void LLVMAddGlobalMapping(LLVMExecutionEngineRef EE, LLVMValueRef Global,
}
void *LLVMGetPointerToGlobal(LLVMExecutionEngineRef EE, LLVMValueRef Global) {
unwrap(EE)->finalizeObject();
return unwrap(EE)->getPointerToGlobal(unwrap<GlobalValue>(Global));
}