Welcome to Chapter 4 of the "Implementing a language with LLVM" tutorial. Chapters 1-3 described the implementation of a simple @@ -48,11 +48,10 @@ for the Kaleidoscope language.

Trivial Constant Folding

Our demonstration for Chapter 3 is elegant and easy to extend. Unfortunately, @@ -134,11 +133,10 @@ range of optimizations that you can use, in the form of "passes".

LLVM Optimization - Passes

LLVM Optimization Passes

LLVM provides many optimization passes, which do many different sorts of things and have different tradeoffs. Unlike other systems, LLVM doesn't hold @@ -266,10 +264,10 @@ executing it!

Adding a JIT Compiler

Code that is available in LLVM IR can have a wide variety of tools applied to it. For example, you can run optimizations on it (as we did above), @@ -474,10 +472,10 @@ tackling some interesting LLVM IR issues along the way.

Full Code Listing

Here is the complete code listing for our running example, enhanced with the @@ -1078,7 +1076,7 @@ int main() { // Create the JIT. This takes ownership of the module. std::string ErrStr; - TheExecutionEngine = EngineBuilder(TheModule).setErrorStr(&ErrStr).create(); +TheExecutionEngine = EngineBuilder(TheModule).setErrorStr(&ErrStr).create(); if (!TheExecutionEngine) { fprintf(stderr, "Could not create ExecutionEngine: %s\n", ErrStr.c_str()); exit(1); @@ -1130,8 +1128,8 @@ int main() { src="http://www.w3.org/Icons/valid-html401" alt="Valid HTML 4.01!"> Chris Lattner
- The LLVM Compiler Infrastructure
- Last modified: $Date: 2010-11-16 18:28:22 +0100 (Tue, 16 Nov 2010) $ + The LLVM Compiler Infrastructure
+ Last modified: $Date: 2011-04-23 02:30:22 +0200 (Sat, 23 Apr 2011) $ -- cgit v1.3

Kaleidoscope: Adding JIT and Optimizer Support

Chapter 4 Introduction

Trivial Constant Folding

LLVM Optimization Passes

Adding a JIT Compiler

Full Code Listing