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Re: [PATCH] can_issue_more vs USE and CLOBBER
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: Richard Henderson <rth at redhat dot com>, vmakarov at redhat dot com, gcc-patches at gcc dot gnu dot org
- Date: Tue, 07 Jan 2003 15:54:39 -0500
- Subject: Re: [PATCH] can_issue_more vs USE and CLOBBER
>>>>> Richard Henderson writes:
Richard> On Wed, Nov 27, 2002 at 02:54:23PM -0500, David Edelsohn wrote:
>> * haifa-sched.c (schedule_block): Update can_issue_more only
>> if not USE or CLOBBER.
Richard> Ok.
I have been mulling over my patch and decided that individual
ports might want the flexibility to make decisions based on USE and
CLOBBER. I think it probably is better to allow each individual port to
skip those pseudo-insns if it defines the hook instead of pre-emptively
stripping them. It means that each port needs to remember to include an
equivalent test. Maybe I will add a note to the documentation of the
hook.
Thanks, David