[Bug rtl-optimization/32296] [4.3 Regression] Bootstrap failure in stage1 on hppa*-*-*

[spark 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 ?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32296