[llvm] r271064 - [Kaleidoscope][BuildingAJIT] Add stub chapter text for Building A JIT Chapter 4.

Lang Hames via llvm-commits llvm-commits at lists.llvm.org
Fri May 27 15:34:58 PDT 2016

Author: lhames
Date: Fri May 27 17:34:56 2016
New Revision: 271064

URL: http://llvm.org/viewvc/llvm-project?rev=271064&view=rev
[Kaleidoscope][BuildingAJIT] Add stub chapter text for Building A JIT Chapter 4.


Added: llvm/trunk/docs/tutorial/BuildingAJIT4.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/tutorial/BuildingAJIT4.rst?rev=271064&view=auto
--- llvm/trunk/docs/tutorial/BuildingAJIT4.rst (added)
+++ llvm/trunk/docs/tutorial/BuildingAJIT4.rst Fri May 27 17:34:56 2016
@@ -0,0 +1,48 @@
+Building a JIT: Extreme Laziness - Using Compile Callbacks to JIT from ASTs
+.. contents::
+   :local:
+**This tutorial is under active development. It is incomplete and details may
+change frequently.** Nonetheless we invite you to try it out as it stands, and
+we welcome any feedback.
+Chapter 4 Introduction
+Welcome to Chapter 4 of the "Building an ORC-based JIT in LLVM" tutorial. This
+chapter introduces the Compile Callbacks and Indirect Stubs APIs and shows how
+they can be used to replace the CompileOnDemand layer from
+`Chapter 3 <BuildingAJIT3.html>`_ with a custom lazy-JITing scheme that JITs
+directly from Kaleidoscope ASTs.
+**To be done:**
+**(1) Describe the drawbacks of JITing from IR (have to compile to IR first,
+which reduces the benefits of laziness).**
+**(2) Describe CompileCallbackManagers and IndirectStubManagers in detail.**
+**(3) Run through the implementation of addFunctionAST.**
+Full Code Listing
+Here is the complete code listing for our running example that JITs lazily from
+Kaleidoscope ASTS. To build this example, use:
+.. code-block:: bash
+    # Compile
+    clang++ -g toy.cpp `llvm-config --cxxflags --ldflags --system-libs --libs core orc native` -O3 -o toy
+    # Run
+    ./toy
+Here is the code:
+.. literalinclude:: ../../examples/Kaleidoscope/BuildingAJIT/Chapter4/KaleidoscopeJIT.h
+   :language: c++
+`Next: Remote-JITing -- Process-isolation and laziness-at-a-distance <BuildingAJIT5.html>`_

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