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	Thu, 10 May 2007 22:46:44 CEST
From: Duncan Sands <baldrick@free.fr>
To: comp.lang.ada@ada-france.org
Subject: Re: Implementing an Ada compiler and libraries.
Date: Thu, 10 May 2007 22:01:02 +0200
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Date: 2007-05-10T22:50:03+02:00

> Why not play on a C generator for the Ada language ?

I have one!  I'm porting the GNAT Ada f-e to LLVM
(http://llvm.org/), which replaces the gcc code
optimizers with those of LLVM.  LLVM has a C backend
which turns its IR into C.  So you can put Ada in and
get C out.  Unfortunately the C is not always compilable.
For example, if you compile an instance of GNAT.Table with
Natural as the index type, in the C you end up with the
declaration of a very big C array, corresponding to
Big_Table_Type.  This array is rejected by the gcc C
compiler as too big.  Still, it works most of the time.

Ciao,

Duncan.