// This small program provides an example of how to quickly build a small
// module with two functions and execute it with the JIT.
//
-//===------------------------------------------------------------------------===
-
// Goal:
// The goal of this snippet is to create in the memory
// the LLVM module consisting of two functions as follow:
// 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/Module.h"
+#include "llvm/Constants.h"
+#include "llvm/Type.h"
+#include "llvm/Instructions.h"
+#include "llvm/ModuleProvider.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/GenericValue.h"
-
-
+#include <iostream>
using namespace llvm;
int main() {
-
// Create some module to put our function into it.
Module *M = new Module("test");
+ // Create the add1 function entry and insert this entry into module M. The
+ // function will have a return type of "int" and take an argument of "int".
+ // The '0' terminates the list of argument types.
+ Function *Add1F = M->getOrInsertFunction("add1", Type::IntTy, Type::IntTy, 0);
- // 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);
+ // Add a basic block to the function. As before, it automatically inserts
+ // because of the last argument.
+ BasicBlock *BB = new BasicBlock("EntryBlock", Add1F);
- // Get pointers to the constant `1'...
- Value *One = ConstantSInt::get(Type::IntTy, 1);
+ // 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
+ // Get pointers to the integer argument of the add1 function...
+ assert(Add1F->abegin() != Add1F->aend()); // Make sure there's an arg
+ Argument *ArgX = Add1F->abegin(); // Get the arg
+ ArgX->setName("AnArg"); // Give it a nice symbolic name for fun.
- // 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 add instruction, inserting it into the end of BB.
+ Instruction *Add = BinaryOperator::createAdd(One, ArgX, "addresult", BB);
- // Create the return instruction and add it to the basic block
- BB->getInstList().push_back(new ReturnInst(Add));
+ // Create the return instruction and add it to the basic block
+ new ReturnInst(Add, BB);
- // function add1 is ready
- }
+ // Now, function add1 is ready.
- // now we going to create function `foo':
- Function *FooF;
+ // Now we going to create function `foo', which returns an int and takes no
+ // arguments.
+ Function *FooF = M->getOrInsertFunction("foo", Type::IntTy, 0);
- {
- // 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);
+ // Add a basic block to the FooF function.
+ BB = new BasicBlock("EntryBlock", FooF);
- // Get pointers to the constant `10'...
- Value *Ten = ConstantSInt::get(Type::IntTy, 10);
+ // 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);
+ // Pass Ten to the call 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));
-
- }
+ // Create the return instruction and add it to the basic block.
+ new ReturnInst(Add1CallRes, BB);
- // Now we going to create JIT ??
+ // Now we create the JIT.
ExistingModuleProvider* MP = new ExistingModuleProvider(M);
- ExecutionEngine* EE = ExecutionEngine::create( MP, true );
+ ExecutionEngine* EE = ExecutionEngine::create(MP, true);
+
+ std::cout << "We just constructed this LLVM module:\n\n" << *M;
+ std::cout << "\n\nRunning foo: " << std::flush;
// 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;
-
+ // Import result of execution:
+ std::cout << "Result: " << gv.IntVal << "\n";
return 0;
}
// This small program provides an example of how to quickly build a small
// module with two functions and execute it with the JIT.
//
-//===------------------------------------------------------------------------===
-
// Goal:
// The goal of this snippet is to create in the memory
// the LLVM module consisting of two functions as follow:
// 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/Module.h"
+#include "llvm/Constants.h"
+#include "llvm/Type.h"
+#include "llvm/Instructions.h"
+#include "llvm/ModuleProvider.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/GenericValue.h"
-
-
+#include <iostream>
using namespace llvm;
int main() {
-
// Create some module to put our function into it.
Module *M = new Module("test");
+ // Create the add1 function entry and insert this entry into module M. The
+ // function will have a return type of "int" and take an argument of "int".
+ // The '0' terminates the list of argument types.
+ Function *Add1F = M->getOrInsertFunction("add1", Type::IntTy, Type::IntTy, 0);
- // 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);
+ // Add a basic block to the function. As before, it automatically inserts
+ // because of the last argument.
+ BasicBlock *BB = new BasicBlock("EntryBlock", Add1F);
- // Get pointers to the constant `1'...
- Value *One = ConstantSInt::get(Type::IntTy, 1);
+ // 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
+ // Get pointers to the integer argument of the add1 function...
+ assert(Add1F->abegin() != Add1F->aend()); // Make sure there's an arg
+ Argument *ArgX = Add1F->abegin(); // Get the arg
+ ArgX->setName("AnArg"); // Give it a nice symbolic name for fun.
- // 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 add instruction, inserting it into the end of BB.
+ Instruction *Add = BinaryOperator::createAdd(One, ArgX, "addresult", BB);
- // Create the return instruction and add it to the basic block
- BB->getInstList().push_back(new ReturnInst(Add));
+ // Create the return instruction and add it to the basic block
+ new ReturnInst(Add, BB);
- // function add1 is ready
- }
+ // Now, function add1 is ready.
- // now we going to create function `foo':
- Function *FooF;
+ // Now we going to create function `foo', which returns an int and takes no
+ // arguments.
+ Function *FooF = M->getOrInsertFunction("foo", Type::IntTy, 0);
- {
- // 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);
+ // Add a basic block to the FooF function.
+ BB = new BasicBlock("EntryBlock", FooF);
- // Get pointers to the constant `10'...
- Value *Ten = ConstantSInt::get(Type::IntTy, 10);
+ // 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);
+ // Pass Ten to the call 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));
-
- }
+ // Create the return instruction and add it to the basic block.
+ new ReturnInst(Add1CallRes, BB);
- // Now we going to create JIT ??
+ // Now we create the JIT.
ExistingModuleProvider* MP = new ExistingModuleProvider(M);
- ExecutionEngine* EE = ExecutionEngine::create( MP, true );
+ ExecutionEngine* EE = ExecutionEngine::create(MP, true);
+
+ std::cout << "We just constructed this LLVM module:\n\n" << *M;
+ std::cout << "\n\nRunning foo: " << std::flush;
// 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;
-
+ // Import result of execution:
+ std::cout << "Result: " << gv.IntVal << "\n";
return 0;
}
// This small program provides an example of how to quickly build a small
// module with two functions and execute it with the JIT.
//
-//===------------------------------------------------------------------------===
-
// Goal:
// The goal of this snippet is to create in the memory
// the LLVM module consisting of two functions as follow:
// 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/Module.h"
+#include "llvm/Constants.h"
+#include "llvm/Type.h"
+#include "llvm/Instructions.h"
+#include "llvm/ModuleProvider.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/GenericValue.h"
-
-
+#include <iostream>
using namespace llvm;
int main() {
-
// Create some module to put our function into it.
Module *M = new Module("test");
+ // Create the add1 function entry and insert this entry into module M. The
+ // function will have a return type of "int" and take an argument of "int".
+ // The '0' terminates the list of argument types.
+ Function *Add1F = M->getOrInsertFunction("add1", Type::IntTy, Type::IntTy, 0);
- // 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);
+ // Add a basic block to the function. As before, it automatically inserts
+ // because of the last argument.
+ BasicBlock *BB = new BasicBlock("EntryBlock", Add1F);
- // Get pointers to the constant `1'...
- Value *One = ConstantSInt::get(Type::IntTy, 1);
+ // 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
+ // Get pointers to the integer argument of the add1 function...
+ assert(Add1F->abegin() != Add1F->aend()); // Make sure there's an arg
+ Argument *ArgX = Add1F->abegin(); // Get the arg
+ ArgX->setName("AnArg"); // Give it a nice symbolic name for fun.
- // 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 add instruction, inserting it into the end of BB.
+ Instruction *Add = BinaryOperator::createAdd(One, ArgX, "addresult", BB);
- // Create the return instruction and add it to the basic block
- BB->getInstList().push_back(new ReturnInst(Add));
+ // Create the return instruction and add it to the basic block
+ new ReturnInst(Add, BB);
- // function add1 is ready
- }
+ // Now, function add1 is ready.
- // now we going to create function `foo':
- Function *FooF;
+ // Now we going to create function `foo', which returns an int and takes no
+ // arguments.
+ Function *FooF = M->getOrInsertFunction("foo", Type::IntTy, 0);
- {
- // 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);
+ // Add a basic block to the FooF function.
+ BB = new BasicBlock("EntryBlock", FooF);
- // Get pointers to the constant `10'...
- Value *Ten = ConstantSInt::get(Type::IntTy, 10);
+ // 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);
+ // Pass Ten to the call 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));
-
- }
+ // Create the return instruction and add it to the basic block.
+ new ReturnInst(Add1CallRes, BB);
- // Now we going to create JIT ??
+ // Now we create the JIT.
ExistingModuleProvider* MP = new ExistingModuleProvider(M);
- ExecutionEngine* EE = ExecutionEngine::create( MP, true );
+ ExecutionEngine* EE = ExecutionEngine::create(MP, true);
+
+ std::cout << "We just constructed this LLVM module:\n\n" << *M;
+ std::cout << "\n\nRunning foo: " << std::flush;
// 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;
-
+ // Import result of execution:
+ std::cout << "Result: " << gv.IntVal << "\n";
return 0;
}
projects / oota-llvm.git / commitdiff