--- /dev/null
+//===--- HowToUseJIT.cpp - An example use of the JIT ----------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by Valery A. Khamenya and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This tool provides a single point of access to the LLVM compilation tools.
+// It has many options. To discover the options supported please refer to the
+// tools' manual page (docs/CommandGuide/html/llvmc.html) or run the tool with
+// the --help option.
+//
+//===------------------------------------------------------------------------===
+
+// Goal:
+// The goal of this snippet is to create in the memory
+// the LLVM module consisting of two functions as follow:
+//
+// int add1(int x) {
+// return x+1;
+// }
+//
+// int foo() {
+// return add1(10);
+// }
+//
+// then compile the module via JIT, then execute the `foo'
+// function and return result to a driver, i.e. to a "host program".
+//
+// Some remarks and questions:
+//
+// - could we invoke some code using noname functions too?
+// e.g. evaluate "foo()+foo()" without fears to introduce
+// conflict of temporary function name with some real
+// existing function name?
+//
+
+#include <iostream>
+
+#include <llvm/Module.h>
+#include <llvm/DerivedTypes.h>
+#include <llvm/Constants.h>
+#include <llvm/Instructions.h>
+#include <llvm/ModuleProvider.h>
+
+#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/ExecutionEngine/GenericValue.h"
+
+
+using namespace llvm;
+
+int main() {
+
+ // Create some module to put our function into it.
+ Module *M = new Module("test");
+
+
+ // We are about to create the add1 function:
+ Function *Add1F;
+
+ {
+ // first create type for the single argument of add1 function:
+ // the type is 'int ()'
+ std::vector<const Type*> ArgT(1);
+ ArgT[0] = Type::IntTy;
+
+ // now create full type of the add1 function:
+ FunctionType *Add1T = FunctionType::get(Type::IntTy, // type of result
+ ArgT,
+ /*not vararg*/false);
+
+ // Now create the add1 function entry and
+ // insert this entry into module M
+ // (By passing a module as the last parameter to the Function constructor,
+ // it automatically gets appended to the Module.)
+ Add1F = new Function(Add1T,
+ Function::ExternalLinkage, // maybe too much
+ "add1", M);
+
+ // Add a basic block to the function... (again, it automatically inserts
+ // because of the last argument.)
+ BasicBlock *BB = new BasicBlock("EntryBlock of add1 function", Add1F);
+
+ // Get pointers to the constant `1'...
+ Value *One = ConstantSInt::get(Type::IntTy, 1);
+
+ // Get pointers to the integer argument of the add1 function...
+ assert(Add1F->abegin() != Add1F->aend()); // Make sure there's an arg
+ Argument &ArgX = Add1F->afront(); // Get the arg
+
+ // Create the add instruction... does not insert...
+ Instruction *Add = BinaryOperator::create(Instruction::Add, One, &ArgX,
+ "addresult");
+
+ // explicitly insert it into the basic block...
+ BB->getInstList().push_back(Add);
+
+ // Create the return instruction and add it to the basic block
+ BB->getInstList().push_back(new ReturnInst(Add));
+
+ // function add1 is ready
+ }
+
+
+ // now we going to create function `foo':
+ Function *FooF;
+
+ {
+ // Create the foo function type:
+ FunctionType *FooT =
+ FunctionType::get(Type::IntTy, // result has type: 'int ()'
+ std::vector<const Type*>(), // no arguments
+ /*not vararg*/false);
+
+ // create the entry for function `foo' and insert
+ // this entry into module M:
+ FooF =
+ new Function(FooT,
+ Function::ExternalLinkage, // too wide?
+ "foo", M);
+
+ // Add a basic block to the FooF function...
+ BasicBlock *BB = new BasicBlock("EntryBlock of add1 function", FooF);
+
+ // Get pointers to the constant `10'...
+ Value *Ten = ConstantSInt::get(Type::IntTy, 10);
+
+ // Put the argument Ten on stack and make call:
+ // ...
+ std::vector<Value*> Params;
+ Params.push_back(Ten);
+ CallInst * Add1CallRes = new CallInst(Add1F, Params, "add1", BB);
+
+ // Create the return instruction and add it to the basic block
+ BB->getInstList().push_back(new ReturnInst(Add1CallRes));
+
+ }
+
+ // Now we going to create JIT ??
+ ExistingModuleProvider* MP = new ExistingModuleProvider(M);
+ ExecutionEngine* EE = ExecutionEngine::create( MP, true );
+
+ // Call the `foo' function with no arguments:
+ std::vector<GenericValue> noargs;
+ GenericValue gv = EE->runFunction(FooF, noargs);
+
+ // import result of execution:
+ std::cout << "Result: " << gv.IntVal << std:: endl;
+
+ return 0;
+}
--- /dev/null
+##===- projects/HowToUseJIT/Makefile -----------------------*- Makefile -*-===##
+#
+# The LLVM Compiler Infrastructure
+#
+# This file was developed by Valery A. Khamenya and is distributed under
+# the University of Illinois Open Source License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../..
+TOOLNAME = HowToUseJIT
+USEDLIBS = lli-jit lli-interpreter codegen executionengine x86 selectiondag \
+ scalaropts analysis.a transformutils.a bcreader target.a vmcore \
+ support.a
+
+include $(LEVEL)/Makefile.common
--- /dev/null
+//===--- HowToUseJIT.cpp - An example use of the JIT ----------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by Valery A. Khamenya and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This tool provides a single point of access to the LLVM compilation tools.
+// It has many options. To discover the options supported please refer to the
+// tools' manual page (docs/CommandGuide/html/llvmc.html) or run the tool with
+// the --help option.
+//
+//===------------------------------------------------------------------------===
+
+// Goal:
+// The goal of this snippet is to create in the memory
+// the LLVM module consisting of two functions as follow:
+//
+// int add1(int x) {
+// return x+1;
+// }
+//
+// int foo() {
+// return add1(10);
+// }
+//
+// then compile the module via JIT, then execute the `foo'
+// function and return result to a driver, i.e. to a "host program".
+//
+// Some remarks and questions:
+//
+// - could we invoke some code using noname functions too?
+// e.g. evaluate "foo()+foo()" without fears to introduce
+// conflict of temporary function name with some real
+// existing function name?
+//
+
+#include <iostream>
+
+#include <llvm/Module.h>
+#include <llvm/DerivedTypes.h>
+#include <llvm/Constants.h>
+#include <llvm/Instructions.h>
+#include <llvm/ModuleProvider.h>
+
+#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/ExecutionEngine/GenericValue.h"
+
+
+using namespace llvm;
+
+int main() {
+
+ // Create some module to put our function into it.
+ Module *M = new Module("test");
+
+
+ // We are about to create the add1 function:
+ Function *Add1F;
+
+ {
+ // first create type for the single argument of add1 function:
+ // the type is 'int ()'
+ std::vector<const Type*> ArgT(1);
+ ArgT[0] = Type::IntTy;
+
+ // now create full type of the add1 function:
+ FunctionType *Add1T = FunctionType::get(Type::IntTy, // type of result
+ ArgT,
+ /*not vararg*/false);
+
+ // Now create the add1 function entry and
+ // insert this entry into module M
+ // (By passing a module as the last parameter to the Function constructor,
+ // it automatically gets appended to the Module.)
+ Add1F = new Function(Add1T,
+ Function::ExternalLinkage, // maybe too much
+ "add1", M);
+
+ // Add a basic block to the function... (again, it automatically inserts
+ // because of the last argument.)
+ BasicBlock *BB = new BasicBlock("EntryBlock of add1 function", Add1F);
+
+ // Get pointers to the constant `1'...
+ Value *One = ConstantSInt::get(Type::IntTy, 1);
+
+ // Get pointers to the integer argument of the add1 function...
+ assert(Add1F->abegin() != Add1F->aend()); // Make sure there's an arg
+ Argument &ArgX = Add1F->afront(); // Get the arg
+
+ // Create the add instruction... does not insert...
+ Instruction *Add = BinaryOperator::create(Instruction::Add, One, &ArgX,
+ "addresult");
+
+ // explicitly insert it into the basic block...
+ BB->getInstList().push_back(Add);
+
+ // Create the return instruction and add it to the basic block
+ BB->getInstList().push_back(new ReturnInst(Add));
+
+ // function add1 is ready
+ }
+
+
+ // now we going to create function `foo':
+ Function *FooF;
+
+ {
+ // Create the foo function type:
+ FunctionType *FooT =
+ FunctionType::get(Type::IntTy, // result has type: 'int ()'
+ std::vector<const Type*>(), // no arguments
+ /*not vararg*/false);
+
+ // create the entry for function `foo' and insert
+ // this entry into module M:
+ FooF =
+ new Function(FooT,
+ Function::ExternalLinkage, // too wide?
+ "foo", M);
+
+ // Add a basic block to the FooF function...
+ BasicBlock *BB = new BasicBlock("EntryBlock of add1 function", FooF);
+
+ // Get pointers to the constant `10'...
+ Value *Ten = ConstantSInt::get(Type::IntTy, 10);
+
+ // Put the argument Ten on stack and make call:
+ // ...
+ std::vector<Value*> Params;
+ Params.push_back(Ten);
+ CallInst * Add1CallRes = new CallInst(Add1F, Params, "add1", BB);
+
+ // Create the return instruction and add it to the basic block
+ BB->getInstList().push_back(new ReturnInst(Add1CallRes));
+
+ }
+
+ // Now we going to create JIT ??
+ ExistingModuleProvider* MP = new ExistingModuleProvider(M);
+ ExecutionEngine* EE = ExecutionEngine::create( MP, true );
+
+ // Call the `foo' function with no arguments:
+ std::vector<GenericValue> noargs;
+ GenericValue gv = EE->runFunction(FooF, noargs);
+
+ // import result of execution:
+ std::cout << "Result: " << gv.IntVal << std:: endl;
+
+ return 0;
+}
--- /dev/null
+##===- projects/HowToUseJIT/Makefile -----------------------*- Makefile -*-===##
+#
+# The LLVM Compiler Infrastructure
+#
+# This file was developed by Valery A. Khamenya and is distributed under
+# the University of Illinois Open Source License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../..
+TOOLNAME = HowToUseJIT
+USEDLIBS = lli-jit lli-interpreter codegen executionengine x86 selectiondag \
+ scalaropts analysis.a transformutils.a bcreader target.a vmcore \
+ support.a
+
+include $(LEVEL)/Makefile.common
--- /dev/null
+//===--- HowToUseJIT.cpp - An example use of the JIT ----------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by Valery A. Khamenya and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This tool provides a single point of access to the LLVM compilation tools.
+// It has many options. To discover the options supported please refer to the
+// tools' manual page (docs/CommandGuide/html/llvmc.html) or run the tool with
+// the --help option.
+//
+//===------------------------------------------------------------------------===
+
+// Goal:
+// The goal of this snippet is to create in the memory
+// the LLVM module consisting of two functions as follow:
+//
+// int add1(int x) {
+// return x+1;
+// }
+//
+// int foo() {
+// return add1(10);
+// }
+//
+// then compile the module via JIT, then execute the `foo'
+// function and return result to a driver, i.e. to a "host program".
+//
+// Some remarks and questions:
+//
+// - could we invoke some code using noname functions too?
+// e.g. evaluate "foo()+foo()" without fears to introduce
+// conflict of temporary function name with some real
+// existing function name?
+//
+
+#include <iostream>
+
+#include <llvm/Module.h>
+#include <llvm/DerivedTypes.h>
+#include <llvm/Constants.h>
+#include <llvm/Instructions.h>
+#include <llvm/ModuleProvider.h>
+
+#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/ExecutionEngine/GenericValue.h"
+
+
+using namespace llvm;
+
+int main() {
+
+ // Create some module to put our function into it.
+ Module *M = new Module("test");
+
+
+ // We are about to create the add1 function:
+ Function *Add1F;
+
+ {
+ // first create type for the single argument of add1 function:
+ // the type is 'int ()'
+ std::vector<const Type*> ArgT(1);
+ ArgT[0] = Type::IntTy;
+
+ // now create full type of the add1 function:
+ FunctionType *Add1T = FunctionType::get(Type::IntTy, // type of result
+ ArgT,
+ /*not vararg*/false);
+
+ // Now create the add1 function entry and
+ // insert this entry into module M
+ // (By passing a module as the last parameter to the Function constructor,
+ // it automatically gets appended to the Module.)
+ Add1F = new Function(Add1T,
+ Function::ExternalLinkage, // maybe too much
+ "add1", M);
+
+ // Add a basic block to the function... (again, it automatically inserts
+ // because of the last argument.)
+ BasicBlock *BB = new BasicBlock("EntryBlock of add1 function", Add1F);
+
+ // Get pointers to the constant `1'...
+ Value *One = ConstantSInt::get(Type::IntTy, 1);
+
+ // Get pointers to the integer argument of the add1 function...
+ assert(Add1F->abegin() != Add1F->aend()); // Make sure there's an arg
+ Argument &ArgX = Add1F->afront(); // Get the arg
+
+ // Create the add instruction... does not insert...
+ Instruction *Add = BinaryOperator::create(Instruction::Add, One, &ArgX,
+ "addresult");
+
+ // explicitly insert it into the basic block...
+ BB->getInstList().push_back(Add);
+
+ // Create the return instruction and add it to the basic block
+ BB->getInstList().push_back(new ReturnInst(Add));
+
+ // function add1 is ready
+ }
+
+
+ // now we going to create function `foo':
+ Function *FooF;
+
+ {
+ // Create the foo function type:
+ FunctionType *FooT =
+ FunctionType::get(Type::IntTy, // result has type: 'int ()'
+ std::vector<const Type*>(), // no arguments
+ /*not vararg*/false);
+
+ // create the entry for function `foo' and insert
+ // this entry into module M:
+ FooF =
+ new Function(FooT,
+ Function::ExternalLinkage, // too wide?
+ "foo", M);
+
+ // Add a basic block to the FooF function...
+ BasicBlock *BB = new BasicBlock("EntryBlock of add1 function", FooF);
+
+ // Get pointers to the constant `10'...
+ Value *Ten = ConstantSInt::get(Type::IntTy, 10);
+
+ // Put the argument Ten on stack and make call:
+ // ...
+ std::vector<Value*> Params;
+ Params.push_back(Ten);
+ CallInst * Add1CallRes = new CallInst(Add1F, Params, "add1", BB);
+
+ // Create the return instruction and add it to the basic block
+ BB->getInstList().push_back(new ReturnInst(Add1CallRes));
+
+ }
+
+ // Now we going to create JIT ??
+ ExistingModuleProvider* MP = new ExistingModuleProvider(M);
+ ExecutionEngine* EE = ExecutionEngine::create( MP, true );
+
+ // Call the `foo' function with no arguments:
+ std::vector<GenericValue> noargs;
+ GenericValue gv = EE->runFunction(FooF, noargs);
+
+ // import result of execution:
+ std::cout << "Result: " << gv.IntVal << std:: endl;
+
+ return 0;
+}
--- /dev/null
+##===- projects/HowToUseJIT/Makefile -----------------------*- Makefile -*-===##
+#
+# The LLVM Compiler Infrastructure
+#
+# This file was developed by Valery A. Khamenya and is distributed under
+# the University of Illinois Open Source License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../..
+TOOLNAME = HowToUseJIT
+USEDLIBS = lli-jit lli-interpreter codegen executionengine x86 selectiondag \
+ scalaropts analysis.a transformutils.a bcreader target.a vmcore \
+ support.a
+
+include $(LEVEL)/Makefile.common
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