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Re: Generate annotations for a binary translator
- From: ééä <chenwj at iis dot sinica dot edu dot tw>
- To: gcc at gcc dot gnu dot org
- Date: Thu, 9 Jun 2011 15:05:10 +0800
- Subject: Re: Generate annotations for a binary translator
- References: <mcr7h9va1ta.fsf@coign.corp.google.com> <20110513033505.GA79308@cs.nctu.edu.tw> <mcrtycz8aaa.fsf@coign.corp.google.com> <20110516085156.GA67683@cs.nctu.edu.tw> <mcrei3y4cmh.fsf@coign.corp.google.com> <20110517053946.GA99002@cs.nctu.edu.tw> <mcrzkmlzur7.fsf@coign.corp.google.com> <20110517090528.GA56624@cs.nctu.edu.tw> <20110609053825.GA68628@cs.nctu.edu.tw> <mcr8vtb7bn1.fsf@coign.corp.google.com>
Hi, Ian
> That documentation is out of date. The CFG is now retained through most
> of the RTL passes.
You said "through most of the RTLpasses". And I found the CFG
is freed before other passes in gcc/passes.c.
NEXT_PASS (pass_free_cfg);
NEXT_PASS (pass_machine_reorg);
NEXT_PASS (pass_cleanup_barriers);
NEXT_PASS (pass_delay_slots);
NEXT_PASS (pass_split_for_shorten_branches);
NEXT_PASS (pass_convert_to_eh_region_ranges);
NEXT_PASS (pass_shorten_branches);
NEXT_PASS (pass_set_nothrow_function_flags);
NEXT_PASS (pass_final);
Is the CFG the same as the one in the assembly? I mean
if I analysis the assembly and contruct the CFG back, they
are the same?
Thanks.
Regards,
chenwj
--
Wei-Ren Chen (ééä)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667