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[Bug rtl-optimization/32296] [4.3 Regression] Bootstrap failure in stage1 on hppa*-*-*
- From: "spark at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 13 Jun 2007 03:48:31 -0000
- Subject: [Bug rtl-optimization/32296] [4.3 Regression] Bootstrap failure in stage1 on hppa*-*-*
- References: <bug-32296-276@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from spark at gcc dot gnu dot org 2007-06-13 03:48 -------
(In reply to comment #8)
> Subject: Re: [4.3 Regression] Bootstrap failure in stage1 on hppa*-*-*
>
> > I think the solution is to remove this check from the insn definition
> > in pa.md and change the check in hppa_can_use_return_insn_p()
> > to ! df_hard_reg_used_p().
>
> This doesn't work. The problem seems to be that df_regs_ever_live (2)
> doesn't provide an indication that a function isn't a leaf function
> anymore. Calls clobber register r2 but they don't us it.
It's my turn to ask: so what information does hppa_can_use_return_p
need to make the decision ?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32296