[llvm-commits] CVS: llvm/projects/HowToUseJIT/HowToUseJIT.cpp
Reid Spencer
reid at x10sys.com
Thu Aug 12 10:52:57 PDT 2004
Changes in directory llvm/projects/HowToUseJIT:
HowToUseJIT.cpp updated: 1.2 -> 1.3
---
Log message:
Convert to unix line format.
---
Diffs of the changes: (+151 -151)
Index: llvm/projects/HowToUseJIT/HowToUseJIT.cpp
diff -u llvm/projects/HowToUseJIT/HowToUseJIT.cpp:1.2 llvm/projects/HowToUseJIT/HowToUseJIT.cpp:1.3
--- llvm/projects/HowToUseJIT/HowToUseJIT.cpp:1.2 Tue Aug 10 14:18:51 2004
+++ llvm/projects/HowToUseJIT/HowToUseJIT.cpp Thu Aug 12 12:52:47 2004
@@ -1,151 +1,151 @@
-//===--- 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 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:
-//
-// 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;
-}
+//===--- 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 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:
+//
+// 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;
+}
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