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Re: bug in combine_stack_adjustments
- To: Jeffrey A Law <law at cygnus dot com>
- Subject: Re: bug in combine_stack_adjustments
- From: Richard Henderson <rth at cygnus dot com>
- Date: Fri, 17 Mar 2000 14:57:28 -0800
- Cc: gcc at gcc dot gnu dot org
- References: <20000317141754.B11290@cygnus.com> <22239.953331779@upchuck>
On Fri, Mar 17, 2000 at 03:22:59PM -0700, Jeffrey A Law wrote:
> Why shouldn't we be using call-pop?
Because the standard unix ABI has the caller pop.
The call_pop pattern is kind of a lie -- it's not the caller's
call insn that pops, but rather the callee's return insn. So
it's not something we can arbitrarily change.
> > And this shouldn't have matched single_set, so I shouldn't
> > have been looking at it at all... I wonder what went wrong...
> It's only got one set.....
Grr. Seems like a bug in single_set to me. It's hardly the
same thing.
r~