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@@ -47,6 +47,7 @@
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using namespace llvm;
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static Function* createAdd1(Module *M) {
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+ LLVMContext &Context = M->getContext();
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// Create the add1 function entry and insert this entry into module M. The
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// function will have a return type of "int" and take an argument of "int".
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Function *Add1F =
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@@ -56,10 +57,10 @@ static Function* createAdd1(Module *M) {
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// Add a basic block to the function. As before, it automatically inserts
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// because of the last argument.
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- BasicBlock *BB = BasicBlock::Create(M->getContext(), "EntryBlock", Add1F);
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+ BasicBlock *BB = BasicBlock::Create(Context, "EntryBlock", Add1F);
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// Get pointers to the constant `1'.
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- Value *One = ConstantInt::get(Type::getInt32Ty(M->getContext()), 1);
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+ Value *One = ConstantInt::get(Type::getInt32Ty(Context), 1);
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// Get pointers to the integer argument of the add1 function...
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assert(Add1F->arg_begin() != Add1F->arg_end()); // Make sure there's an arg
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@@ -70,13 +71,14 @@ static Function* createAdd1(Module *M) {
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Instruction *Add = BinaryOperator::CreateAdd(One, ArgX, "addresult", BB);
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// Create the return instruction and add it to the basic block
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- ReturnInst::Create(M->getContext(), Add, BB);
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+ ReturnInst::Create(Context, Add, BB);
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// Now, function add1 is ready.
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return Add1F;
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}
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static Function *CreateFibFunction(Module *M) {
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+ LLVMContext &Context = M->getContext();
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// Create the fib function and insert it into module M. This function is said
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// to return an int and take an int parameter.
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FunctionType *FibFTy = FunctionType::get(Type::getInt32Ty(Context),
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@@ -85,27 +87,27 @@ static Function *CreateFibFunction(Module *M) {
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Function::Create(FibFTy, Function::ExternalLinkage, "fib", M);
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// Add a basic block to the function.
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- BasicBlock *BB = BasicBlock::Create(M->getContext(), "EntryBlock", FibF);
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+ BasicBlock *BB = BasicBlock::Create(Context, "EntryBlock", FibF);
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// Get pointers to the constants.
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- Value *One = ConstantInt::get(Type::getInt32Ty(M->getContext()), 1);
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- Value *Two = ConstantInt::get(Type::getInt32Ty(M->getContext()), 2);
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+ Value *One = ConstantInt::get(Type::getInt32Ty(Context), 1);
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+ Value *Two = ConstantInt::get(Type::getInt32Ty(Context), 2);
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// Get pointer to the integer argument of the add1 function...
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Argument *ArgX = &*FibF->arg_begin(); // Get the arg.
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ArgX->setName("AnArg"); // Give it a nice symbolic name for fun.
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// Create the true_block.
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- BasicBlock *RetBB = BasicBlock::Create(M->getContext(), "return", FibF);
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+ BasicBlock *RetBB = BasicBlock::Create(Context, "return", FibF);
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// Create an exit block.
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- BasicBlock* RecurseBB = BasicBlock::Create(M->getContext(), "recurse", FibF);
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+ BasicBlock *RecurseBB = BasicBlock::Create(Context, "recurse", FibF);
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// Create the "if (arg < 2) goto exitbb"
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Value *CondInst = new ICmpInst(*BB, ICmpInst::ICMP_SLE, ArgX, Two, "cond");
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BranchInst::Create(RetBB, RecurseBB, CondInst, BB);
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// Create: ret int 1
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- ReturnInst::Create(M->getContext(), One, RetBB);
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+ ReturnInst::Create(Context, One, RetBB);
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// create fib(x-1)
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Value *Sub = BinaryOperator::CreateSub(ArgX, One, "arg", RecurseBB);
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@@ -120,7 +122,7 @@ static Function *CreateFibFunction(Module *M) {
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BinaryOperator::CreateAdd(CallFibX1, CallFibX2, "addresult", RecurseBB);
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// Create the return instruction and add it to the basic block
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- ReturnInst::Create(M->getContext(), Sum, RecurseBB);
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+ ReturnInst::Create(Context, Sum, RecurseBB);
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return FibF;
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}
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