</p>
<p><b>Please note</b>: the code in this chapter and later require LLVM 2.2 or
-LLVM SVN to work. LLVM 2.1 and before will not work with it.</p>
+later. LLVM 2.1 and before will not work with it. Also note that you need
+to use a version of this tutorial that matches your LLVM release: If you are
+using an official LLVM release, use the version of the documentation included
+with your release or on the <a href="http://llvm.org/releases/">llvm.org
+releases page</a>.</p>
</div>
Value *ErrorV(const char *Str) { Error(Str); return 0; }
static Module *TheModule;
-static IRBuilder Builder;
+static IRBuilder<> Builder(getGlobalContext());
static std::map<std::string, Value*> NamedValues;
</pre>
</div>
<p>The <tt>Builder</tt> object is a helper object that makes it easy to generate
LLVM instructions. Instances of the <a
href="http://llvm.org/doxygen/IRBuilder_8h-source.html"><tt>IRBuilder</tt></a>
-class keep track of the current place to insert instructions and has methods to
-create new instructions.</p>
+class template keep track of the current place to insert instructions and has
+methods to create new instructions.</p>
<p>The <tt>NamedValues</tt> map keeps track of which values are defined in the
current scope and what their LLVM representation is. (In other words, it is a
<div class="doc_code">
<pre>
Value *NumberExprAST::Codegen() {
- return ConstantFP::get(Type::DoubleTy, APFloat(Val));
+ return getGlobalContext().getConstantFP(APFloat(Val));
}
</pre>
</div>
constants of <em>A</em>rbitrary <em>P</em>recision). This code basically just
creates and returns a <tt>ConstantFP</tt>. Note that in the LLVM IR
that constants are all uniqued together and shared. For this reason, the API
-uses "the foo::get(..)" idiom instead of "new foo(..)" or "foo::create(..)".</p>
+uses "the Context.get..." idiom instead of "new foo(..)" or "foo::Create(..)".</p>
<div class="doc_code">
<pre>
Function *PrototypeAST::Codegen() {
// Make the function type: double(double,double) etc.
std::vector<const Type*> Doubles(Args.size(), Type::DoubleTy);
- FunctionType *FT = FunctionType::get(Type::DoubleTy, Doubles, false);
+ FunctionType *FT = getGlobalContext().getFunctionType(Type::DoubleTy, Doubles, false);
Function *F = Function::Create(FT, Function::ExternalLinkage, Name, TheModule);
</pre>
by an expression), it makes sense for it to return the LLVM Function it
corresponds to when codegen'd.</p>
-<p>The call to <tt>FunctionType::get</tt> creates
+<p>The call to <tt>Context.get</tt> creates
the <tt>FunctionType</tt> that should be used for a given Prototype. Since all
function arguments in Kaleidoscope are of type double, the first line creates
-a vector of "N" LLVM double types. It then uses the <tt>FunctionType::get</tt>
+a vector of "N" LLVM double types. It then uses the <tt>Context.get</tt>
method to create a function type that takes "N" doubles as arguments, returns
one double as a result, and that is not vararg (the false parameter indicates
this). Note that Types in LLVM are uniqued just like Constants are, so you
// See example below.
#include "llvm/DerivedTypes.h"
+#include "llvm/LLVMContext.h"
#include "llvm/Module.h"
#include "llvm/Analysis/Verifier.h"
#include "llvm/Support/IRBuilder.h"
//===----------------------------------------------------------------------===//
static Module *TheModule;
-static IRBuilder Builder;
+static IRBuilder<> Builder(getGlobalContext());
static std::map<std::string, Value*> NamedValues;
Value *ErrorV(const char *Str) { Error(Str); return 0; }
Value *NumberExprAST::Codegen() {
- return ConstantFP::get(Type::DoubleTy, APFloat(Val));
+ return getGlobalContext().getConstantFP(APFloat(Val));
}
Value *VariableExprAST::Codegen() {
Function *PrototypeAST::Codegen() {
// Make the function type: double(double,double) etc.
std::vector<const Type*> Doubles(Args.size(), Type::DoubleTy);
- FunctionType *FT = FunctionType::get(Type::DoubleTy, Doubles, false);
+ FunctionType *FT = getGlobalContext().getFunctionType(Type::DoubleTy, Doubles, false);
Function *F = Function::Create(FT, Function::ExternalLinkage, Name, TheModule);
//===----------------------------------------------------------------------===//
int main() {
- TheModule = new Module("my cool jit");
+ TheModule = new Module("my cool jit", getGlobalContext());
// Install standard binary operators.
// 1 is lowest precedence.
<a href="mailto:sabre@nondot.org">Chris Lattner</a><br>
<a href="http://llvm.org">The LLVM Compiler Infrastructure</a><br>
- Last modified: $Date: 2007-10-17 11:05:13 -0700 (Wed, 17 Oct 2007) $
+ Last modified: $Date: 2009-07-21 11:05:13 -0700 (Tue, 21 Jul 2009) $
</address>
</body>
</html>