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[MCJIT] Update MCJIT and get the fibonacci example working again.

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MCJIT will now set the DataLayout on a module when it is added to the JIT,
rather than waiting until it is codegen'd, and the runFunction method will
finalize the module containing the function to be run before running it.

The fibonacci example has been updated to include and link against MCJIT.

llvm-svn: 272455
This commit is contained in:
Lang Hames 2016-06-11 05:47:04 +00:00
parent 9a64a1c8f7
commit a4ac14ea38
3 changed files with 12 additions and 5 deletions
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1
examples/Fibonacci/CMakeLists.txt
View File

@ -3,6 +3,7 @@ set(LLVM_LINK_COMPONENTS
ExecutionEngine
Interpreter
MC
MCJIT
Support
nativecodegen
)

2
examples/Fibonacci/fibonacci.cpp
View File

@ -27,6 +27,7 @@
#include "llvm/IR/Verifier.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/GenericValue.h"
#include "llvm/ExecutionEngine/MCJIT.h"
#include "llvm/IR/Argument.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Constants.h"
@ -103,6 +104,7 @@ int main(int argc, char **argv) {
int n = argc > 1 ? atol(argv[1]) : 24;
InitializeNativeTarget();
InitializeNativeTargetAsmPrinter();
LLVMContext Context;
// Create some module to put our function into it.

12
lib/ExecutionEngine/MCJIT/MCJIT.cpp
View File

@ -85,6 +85,9 @@ MCJIT::MCJIT(std::unique_ptr<Module> M, std::unique_ptr<TargetMachine> TM,
std::unique_ptr<Module> First = std::move(Modules[0]);
Modules.clear();
if (First->getDataLayout().isDefault())
First->setDataLayout(getDataLayout());
OwnedModules.addModule(std::move(First));
RegisterJITEventListener(JITEventListener::createGDBRegistrationListener());
}
@ -103,6 +106,10 @@ MCJIT::~MCJIT() {
void MCJIT::addModule(std::unique_ptr<Module> M) {
MutexGuard locked(lock);
if (M->getDataLayout().isDefault())
M->setDataLayout(getDataLayout());
OwnedModules.addModule(std::move(M));
}
@ -192,11 +199,7 @@ void MCJIT::generateCodeForModule(Module *M) {
if (ObjCache)
ObjectToLoad = ObjCache->getObject(M);
if (M->getDataLayout().isDefault()) {
M->setDataLayout(getDataLayout());
} else {
assert(M->getDataLayout() == getDataLayout() && "DataLayout Mismatch");
}
// If the cache did not contain a suitable object, compile the object
if (!ObjectToLoad) {
@ -490,6 +493,7 @@ GenericValue MCJIT::runFunction(Function *F, ArrayRef<GenericValue> ArgValues) {
assert(F && "Function *F was null at entry to run()");
void *FPtr = getPointerToFunction(F);
finalizeModule(F->getParent());
assert(FPtr && "Pointer to fn's code was null after getPointerToFunction");
FunctionType *FTy = F->getFunctionType();
Type *RetTy = FTy->getReturnType();