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Headers are basically done, debug info is just about done (and 

will improve a lot this week hopefully), and a libgcc replacement
is ready once I wrangle lawyers.

llvm-svn: 65432
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Chris Lattner 2009-02-25 05:39:01 +00:00
parent a004a1846b
commit 014d2ad55f
1 changed files with 1 additions and 24 deletions
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@ -77,11 +77,6 @@ compile it. If not, please let us know. Again,
<a href="get_started.html#ccc"><code>ccc</code></a> might help you. Once it
compiles it should run. If not, that's a bug :)</li>
<li><b>Debug Info Generation</b>: -emit-llvm doesn't fully support emission
of <a href="http://llvm.org/docs/SourceLevelDebugging.html">LLVM debug info</a>
(which the code generator turns into DWARF). The missing pieces are pretty
minor at this point.</li>
<li><b>Overflow detection</b>: an interesting project would be to add a -ftrapv
compilation mode that causes -emit-llvm to generate overflow tests for all
signed integer arithmetic operators, and call abort if they overflow. Overflow
@ -104,25 +99,7 @@ missing and what is already at least partially supported.</li>
<li><b>Improve target support</b>: The current target interfaces are heavily
stubbed out and need to be implemented fully. See the FIXME's in TargetInfo.
Additionally, the actual target implementations (instances of TargetInfoImpl)
also need to be completed. This includes defining builtin macros for linux
targets and other stuff like that.</li>
<li><b>Implement 'builtin' headers</b>: GCC provides a bunch of builtin headers,
such as stdbool.h, iso646.h, float.h, limits.h, etc. It also provides a bunch
of target-specific headers like altivec.h and xmmintrin.h. clang will
eventually need to provide its own copies of these (and there is a <a href=
"http://lists.cs.uiuc.edu/pipermail/cfe-dev/2007-December/000560.html">lot of
improvement</a> that can be made to the GCC ones!) that are clean-room
implemented to avoid GPL taint.</li>
<li><b>Implement a clang 'libgcc'</b>: As with the headers, clang (or a another
related subproject of llvm) will need to implement the features that libgcc
provides. libgcc provides a bunch of routines the code generator uses for
"fallback" when the chip doesn't support some operation (e.g. 64-bit divide on
a 32-bit chip). It also provides software floating point support and many other
things. I don't think that there is a specific licensing reason to reimplement
libgcc, but there is a lot of room for improvement in it in many
dimensions.</li>
also need to be completed.</li>
<li><b>Implement an tool to generate code documentation</b>: Clang's
library-based design allows it to be used by a variety of tools that reason