This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: gcc/resource.c mark_target_live_regs Question
- To: oldham at codesourcery dot com
- Subject: Re: gcc/resource.c mark_target_live_regs Question
- From: kenner at vlsi1 dot ultra dot nyu dot edu (Richard Kenner)
- Date: Thu, 15 Feb 01 12:01:57 EST
- Cc: gcc at gcc dot gnu dot org
If it is completely "scrogg"ed, why can
gcc/resource.c:mark_target_live_regs(), line 961, use the live
register information? Is live register information for blocks
beginning immediately after barriers preserved while other live
register information is unreliable?
That's what used to be the case because of reload. It would be surprising
(but perhaps true) if the exact same situation is true with the changes that
reorg itself does.