X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=examples%2FHowToUseJIT%2FHowToUseJIT.cpp;h=e0bf6a00bf017d84c0d1dac409a0f77d9c03108d;hp=8a788491fd1abfdbece2f4a15b5ffa9b706c9a1e;hb=9a498947cdb25737faecfdabcb64848432c49d68;hpb=4b1511b027ce0b648b3379f2891816c25b46f515

diff --git a/examples/HowToUseJIT/HowToUseJIT.cpp b/examples/HowToUseJIT/HowToUseJIT.cpp
index 8a788491fd1..e0bf6a00bf0 100644
--- a/examples/HowToUseJIT/HowToUseJIT.cpp
+++ b/examples/HowToUseJIT/HowToUseJIT.cpp
@@ -12,7 +12,7 @@
 //
 // Goal:
 //  The goal of this snippet is to create in the memory
-//  the LLVM module consisting of two functions as follow:
+//  the LLVM module consisting of two functions as follow: 
 //
 // int add1(int x) {
 //   return x+1;
@@ -34,18 +34,19 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/LLVMContext.h"
-#include "llvm/Module.h"
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Instructions.h"
-#include "llvm/ModuleProvider.h"
-#include "llvm/ExecutionEngine/JIT.h"
-#include "llvm/ExecutionEngine/Interpreter.h"
+#include "llvm/ADT/STLExtras.h"
 #include "llvm/ExecutionEngine/GenericValue.h"
-#include "llvm/Target/TargetSelect.h"
+#include "llvm/ExecutionEngine/Interpreter.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
 #include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/TargetSelect.h"
 #include "llvm/Support/raw_ostream.h"
+
 using namespace llvm;
 
 int main() {
@@ -55,56 +56,65 @@ int main() {
   LLVMContext Context;
   
   // Create some module to put our function into it.
-  Module *M = new Module("test", Context);
+  std::unique_ptr<Module> Owner = make_unique<Module>("test", Context);
+  Module *M = Owner.get();
 
   // 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 =
-    cast<Function>(M->getOrInsertFunction("add1", Type::Int32Ty, Type::Int32Ty,
-                                          (Type *)0));
+    cast<Function>(M->getOrInsertFunction("add1", Type::getInt32Ty(Context),
+                                          Type::getInt32Ty(Context),
+                                          nullptr));
 
   // Add a basic block to the function. As before, it automatically inserts
   // because of the last argument.
-  BasicBlock *BB = BasicBlock::Create("EntryBlock", Add1F);
+  BasicBlock *BB = BasicBlock::Create(Context, "EntryBlock", Add1F);
+
+  // Create a basic block builder with default parameters.  The builder will
+  // automatically append instructions to the basic block `BB'.
+  IRBuilder<> builder(BB);
 
   // Get pointers to the constant `1'.
-  Value *One = Context.getConstantInt(Type::Int32Ty, 1);
+  Value *One = builder.getInt32(1);
 
   // Get pointers to the integer argument of the add1 function...
   assert(Add1F->arg_begin() != Add1F->arg_end()); // Make sure there's an arg
-  Argument *ArgX = Add1F->arg_begin();  // Get the arg
+  Argument *ArgX = &*Add1F->arg_begin();          // Get the arg
   ArgX->setName("AnArg");            // Give it a nice symbolic name for fun.
 
   // Create the add instruction, inserting it into the end of BB.
-  Instruction *Add = BinaryOperator::CreateAdd(One, ArgX, "addresult", BB);
+  Value *Add = builder.CreateAdd(One, ArgX);
 
   // Create the return instruction and add it to the basic block
-  ReturnInst::Create(Add, BB);
+  builder.CreateRet(Add);
 
   // Now, function add1 is ready.
 
-
-  // Now we going to create function `foo', which returns an int and takes no
+  // Now we're going to create function `foo', which returns an int and takes no
   // arguments.
   Function *FooF =
-    cast<Function>(M->getOrInsertFunction("foo", Type::Int32Ty, (Type *)0));
+    cast<Function>(M->getOrInsertFunction("foo", Type::getInt32Ty(Context),
+                                          nullptr));
 
   // Add a basic block to the FooF function.
-  BB = BasicBlock::Create("EntryBlock", FooF);
+  BB = BasicBlock::Create(Context, "EntryBlock", FooF);
+
+  // Tell the basic block builder to attach itself to the new basic block
+  builder.SetInsertPoint(BB);
 
-  // Get pointers to the constant `10'.
-  Value *Ten = Context.getConstantInt(Type::Int32Ty, 10);
+  // Get pointer to the constant `10'.
+  Value *Ten = builder.getInt32(10);
 
-  // Pass Ten to the call call:
-  CallInst *Add1CallRes = CallInst::Create(Add1F, Ten, "add1", BB);
+  // Pass Ten to the call to Add1F
+  CallInst *Add1CallRes = builder.CreateCall(Add1F, Ten);
   Add1CallRes->setTailCall(true);
 
   // Create the return instruction and add it to the basic block.
-  ReturnInst::Create(Add1CallRes, BB);
+  builder.CreateRet(Add1CallRes);
 
   // Now we create the JIT.
-  ExecutionEngine* EE = EngineBuilder(M).create();
+  ExecutionEngine* EE = EngineBuilder(std::move(Owner)).create();
 
   outs() << "We just constructed this LLVM module:\n\n" << *M;
   outs() << "\n\nRunning foo: ";
@@ -116,7 +126,6 @@ int main() {
 
   // Import result of execution:
   outs() << "Result: " << gv.IntVal << "\n";
-  EE->freeMachineCodeForFunction(FooF);
   delete EE;
   llvm_shutdown();
   return 0;