6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-28 04:33:05 +00:00
Code Issues Projects Releases Wiki Activity

Add some notes about the current state of source (front end) languages

Browse Source 
so we can point to them on llvm-dev.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27976 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2006-04-26 14:52:19 +00:00
parent 1bc7804e4c
commit 501bfee717
1 changed files with 43 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
docs/FAQ.html
View File

@ -55,6 +55,13 @@
target".</li>
</ol></li>
<li><a href="#felangs">Source Languages</a>
<ol>
<li><a href="#langs">What source languages are supported?</a></li>
<li><a href="#langhlsupp">What support is there for higher level source
language constructs for building a compiler?</a></li>
</ol>
<li><a href="#cfe">Using the GCC Front End</a>
<ol>
<li>
@ -383,6 +390,42 @@ which list dependencies for source files, and rebuild:</p>
rebuilding.</p>
</div>
<!-- *********************************************************************** -->
<div class="doc_section">
<a name="felangs">Source Languages</a>
</div>
<div class="question"><p>What source languages are supported?</p></div>
<div name="langs" class="answer">
<p>LLVM currently has full support for C and C++ source languages. These are
available through a special version of GCC that LLVM calls the
<a href="#cfe">C Front End</a></p>
<p>There is an incomplete version of a Java front end available in the
<tt>llvm-java</tt> CVS repository. There is no documentation on this yet so
you'll need to download the code, compile it, and try it.</p>
<p>In the <tt>examples/BFtoLLVM</tt> directory is a translator for the
BrainF*** language (2002 Language Specification).</p>
<p>In the <tt>projects/Stacker</tt> directory is a compiler and runtime
library for the Stacker language, a "toy" language loosely based on Forth.</p>
<p>The PyPy developers are working on integrating LLVM into the PyPy backend
so that PyPy language can translate to LLVM.</p>
</div>
<div name="langhlsupp" class="question">
<p>What support is there for a higher level source language constructs for
building a compiler?</p>
</div>
<div class="answer">
<p>Currently, there isn't much. LLVM supports an intermediate representation
which is useful for code representation but will not support the high level
(abstract syntax tree) representation needed by most compilers. There are no
facilities for lexical nor semantica analysis. There is, however, a <i>mostly
implemented</i> configuration-driven
<a href="CompilerDriver.html">compiler driver</a> which simplifies the task
of running optimizations, linking, and executable generation.</p>
<p>You might be interested in following the progress of the <a
href="http://hlvm.org">HLVM Project</a> which is attempting to address these
issues.</p>
</div>
<!-- *********************************************************************** -->
<div class="doc_section">
<a name="cfe">Using the GCC Front End</a>