[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[hjl dot tools at gmail dot com]

------- Comment #10 from hjl dot tools at gmail dot com  2010-09-03 17:09 -------
(In reply to comment #8)
> (In reply to comment #5)
> > Hmhm, IVOPTs expands crap into arguments.
> > 
> > Index: gcc/tree-ssa-loop-ivopts.c
> > ===================================================================
> > --- gcc/tree-ssa-loop-ivopts.c  (revision 163817)
> > +++ gcc/tree-ssa-loop-ivopts.c  (working copy)
> > @@ -1023,6 +1023,11 @@ find_bivs (struct ivopts_data *data)
> > 
> >        type = TREE_TYPE (PHI_RESULT (phi));
> >        base = fold_convert (type, base);
> > +      STRIP_USELESS_TYPE_CONVERSION (base);
> > +      if (CONVERT_EXPR_P (base)
> > +         && (POINTER_TYPE_P (TREE_TYPE (base))
> > +             != POINTER_TYPE_P (TREE_OPERAND (base, 0))))
> > +       continue;
> >        if (step)
> >         {
> >           if (POINTER_TYPE_P (type))
> > 
> > 
> > fixes the testcase, I am bootstrapping and testing this on x86_64 as a
> > short-term fix but have to think about it some more.
> > 
> > Can you check if 32bit bootstrap succeeds with that?
> > 
> 
> I can bootstrap C with this one on Linux/x86.
> 

With default languages, I got one regression:

Executing on host: /export/build/gnu/gcc-32bit/build-i686-linux/gcc/xgcc
-B/export/build/gnu/gcc-32bit/build-i686-linux/gcc/
/net/gnu-6/export/gnu/import/git/gcc/gcc/testsuite/gcc.target/i386/pr38240.c   
-ansi -pedantic-errors -S  -o pr38240.s    (timeout = 300)
/net/gnu-6/export/gnu/import/git/gcc/gcc/testsuite/gcc.target/i386/pr38240.c:
In function 'g':^M
/net/gnu-6/export/gnu/import/git/gcc/gcc/testsuite/gcc.target/i386/pr38240.c:8:21:
internal compiler error: in convert_move, at expr.c:326^M
Please submit a full bug report,^M 
with preprocessed source if appropriate.^M
See <http://gcc.gnu.org/bugs.html> for instructions.^M
compiler exited with status 1

with revision 163817 plus the fix.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519