build gdc with gcc 4.2.2

[Arthur Loiret]

Hi Ingo,


On Sat, Nov 24, 2007 at 03:13:52PM +0100, Ingo Oeser wrote:
> > --- gcc/tree.h  2007-11-15 14:21:01.000000000 +0100
> > +++ gcc/tree.h  2007-11-15 14:22:05.000000000 +0100
> > @@ -3535,6 +3535,19 @@
> >  
> >  extern tree build_nt (enum tree_code, ...);
> >  
> > +/* Still required by gdc */
> > +#if GCC_VERSION >= 3000 || __STDC_VERSION__ >= 199901L
> > +/* Use preprocessor trickery to map "build" to "buildN" where N is the
> > +   expected number of arguments.  This is used for both efficiency (no
> > +   varargs), and checking (verifying number of passed arguments).  */
> > +#define build(code, ...) \
> > +  _buildN1(build, _buildC1(__VA_ARGS__))(code, __VA_ARGS__)
> > +#define _buildN1(BASE, X)       _buildN2(BASE, X)
> > +#define _buildN2(BASE, X)       BASE##X
> > +#define _buildC1(...)          
> > _buildC2(__VA_ARGS__,9,8,7,6,5,4,3,2,1,0,0) +#define
> > _buildC2(x,a1,a2,a3,a4,a5,a6,a7,a8,a9,c,...) c +#endif
> > +
> >  extern tree build0_stat (enum tree_code, tree MEM_STAT_DECL);
> >  #define build0(c,t) build0_stat (c,t MEM_STAT_INFO)
> >  extern tree build1_stat (enum tree_code, tree, tree MEM_STAT_DECL);
> 
> That's more (short term) maintainable than my approach. I patched the D glue
> layer, fixed up the callers and provided build2() and build3() for compilers
> below GCC 4.0.x. 

You're right. :-)


> > I'm currently trying to fix ICEs, the problems seems to come from
> > gimple.
> 
> Yes, I have seen the same and my vacation was over, so I stopped it.

I made a few other temporary patches to fix ICEs, here is what changed:

diff -ruN gcc/gimplify.c gcc/gimplify.c
--- gcc/gimplify.c      2007-11-19 11:56:50.000000000 +0000
+++ gcc/gimplify.c      2007-11-19 11:58:32.000000000 +0000
@@ -1804,12 +1804,16 @@
              /* Divide the offset by its alignment.  */
              offset = size_binop (EXACT_DIV_EXPR, offset, factor);
 
-             if (!is_gimple_min_invariant (offset))
-               {
-                 TREE_OPERAND (t, 2) = offset;
-                 tret = gimplify_expr (&TREE_OPERAND (t, 2), pre_p, post_p,
-                                       is_gimple_formal_tmp_reg, fb_rvalue);
-                 ret = MIN (ret, tret);
+             /* Would be better to have a look at size_binop ... */
+             if (offset != NULL_TREE)
+               {
+                 if (!is_gimple_min_invariant (offset))
+                   {
+                     TREE_OPERAND (t, 2) = offset;
+                     tret = gimplify_expr (&TREE_OPERAND (t, 2), pre_p, post_p,
+                                           is_gimple_formal_tmp_reg, fb_rvalue);
+                     ret = MIN (ret, tret);
+                   }
                }
            }
        }
diff -ruN gcc/tree-inline.c gcc/tree-inline.c
--- gcc/tree-inline.c   2007-11-19 15:41:33.000000000 +0000
+++ gcc/tree-inline.c   2007-11-19 15:42:24.000000000 +0000
@@ -2636,8 +2636,9 @@
 {
   tree copy, type;
 
-  gcc_assert (TREE_CODE (decl) == PARM_DECL
-             || TREE_CODE (decl) == RESULT_DECL);
+  if (cfun->naked) /* Not sure this is right ... */
+    gcc_assert (TREE_CODE (decl) == PARM_DECL
+               || TREE_CODE (decl) == RESULT_DECL);
 
   type = TREE_TYPE (decl);
 


gdc-4.2 now builds phobos and tango, see [0] and [1].

[0] http://packages.qa.debian.org/g/gdc-4.2.html
[1] http://people.dunnewind.net/arthur/gdc-4.2/

Here is how to test it:

1/ Add this to your /etc/apt/sources.list

deb http://ftp.fr.debian.org/debian experimental main
deb-src http://ftp.fr.debian.org/debian experimental main

2/ Run sudo aptitude update && sudo aptitude install gdc-4.2


I've cleanup gdc-4.2-build.dpatch: see:
http://people.dunnewind.net/arthur/gdc-4.2/patches/gdc-4.2-build.dpatch

David, could you also have a look at this one?


> I have some questions for some parts of that patch. I'll mail them to you.

Sure, no problem.


Have a nice day,

Arthur.

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