[Bug tree-optimization/31169] Bootstrap comparison error at revision 122821

["rth at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #33 from rth at gcc dot gnu dot org  2007-03-29 17:30 -------
I've been trying to track down this same failure on Alpha.  I can reproduce
that
reverting the third hunk allows the bootstrap to complete.  Finding what has
got
miscompiled has been very difficult.  Only two files compile differently:
fold-const.c and tree.c.

Unfortunately, a function early in fold-const.c gets compiled differently 
legitimately -- sign_bit_p actually benefits from the optimization -- and
all the functions after that differ in decl_uid numbers, which completely
obscures the rest of the changes.

I'll keep searching...


-- 

rth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2007-03-14 20:03:38         |2007-03-29 17:30:45
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31169

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