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Re: bb-reorder.c AIX bootstrap failure
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: Jan Hubicka <jh at suse dot cz>
- Cc: gcc-patches at gcc dot gnu dot org, Josef Zlomek <zlomekj at suse dot cz>
- Date: Tue, 11 Feb 2003 15:31:50 -0500
- Subject: Re: bb-reorder.c AIX bootstrap failure
>>>>> Jan Hubicka writes:
Jan> * emit-rtl.c (emit_copy_of_insn_after): Copy insn recog cache too.
Yes, that appears to fix the breakage.
Jan> Aha, this is relatively common problem - many targets construct
Jan> post-reload instructions that no longer math the patterns. This gets
Jan> silently ignored as the recog caches the info, but it is bug in machine
Jan> descriptions and should be fixed.
I think I see the flaw in the MD pattern -- the register
constraint does not match the predicate.
David