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Re: New regressions because of ICE in flow.c
- From: Jan Hubicka <jh at suse dot cz>
- To: Neil Booth <neil at daikokuya dot demon dot co dot uk>
- Cc: gcc at gcc dot gnu dot org, jh at suse dot cz
- Date: Sat, 30 Mar 2002 22:43:52 +0100
- Subject: Re: New regressions because of ICE in flow.c
- References: <20020330204007.GA19714@daikokuya.demon.co.uk>
> This patch appears to be causing a whole load of regressions for
> the C compiler:
It is sanity check failing. The patch bootstrapped for me, but I see
I didn't commited and send out all the patches I had in my tree.
I am just working on it.
I apologize for the problem.
Honza
>
> Sat Mar 30 14:08:55 CET 2002 Jan Hubicka <jh@suse.cz>
>
> * local-alloc.c (local_alloc): Avoid call of update_equiv_regs
> * when not optimizing.
>
> * toplev.c (rest_of_compilation): Cann mark_constant_function
> only when optimizing.
>
> * flow.c (calculate_global_regs_live): Ensure that all AUX
> * fields are NULL.
>
> * cfgcleanup.c (bb_flags): Add BB_NONTHREADABLE_BLOCK.
> (thread_jump): Set BB_NONTHREADABLE_BLOCK, check it.
> (try_optimize_cfg): clear all AUX fields.
>
> * i386.c (aligned_operand): Be prepared for SUBREGed registers.
> (ix86_decompose_address): Use REG_P instead of GET_CODE (...) ==
> REG.
> (ix86_address_cost): Be prepared for SUBREGed registers.
> (legitimate_address_p): Accept SUBREGed registers.
>
> One example:
>
> output is:
> /home/neil/src/gcc/gcc/testsuite/gcc.c-torture/compile/920409-2.c: In
> function `x':
> /home/neil/src/gcc/gcc/testsuite/gcc.c-torture/compile/920409-2.c:2:
> Internal compiler error in calculate_global_regs_live, at flow.c:1081
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
>
> Neil.