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Re: [PATCH 4/6] Shrink-wrapping
- From: Jeff Law <law at redhat dot com>
- To: Paul Koning <paul_koning at dell dot com>
- Cc: Bernd Schmidt <bernds at codesourcery dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>, Richard Sandiford <richard dot sandiford at linaro dot org>
- Date: Thu, 07 Jul 2011 11:00:12 -0600
- Subject: Re: [PATCH 4/6] Shrink-wrapping
- References: <4D8A0703.9090306@codesourcery.com> <4D8A095C.8050809@codesourcery.com> <g4vcvegnx9.fsf@linaro.org> <4E15D2DC.9010704@codesourcery.com> <F44E3CB9-48C7-44B1-B418-9691428A6661@dell.com>
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On 07/07/11 10:58, Paul Koning wrote:
>
> On Jul 7, 2011, at 11:38 AM, Bernd Schmidt wrote:
>
>> ...
>>
>>> It'd also be nice to get rid of all these big blocks of code that are
>>> conditional on preprocessor macros, but I realise you're just following
>>> existing practice in the surrounding code, so again it can be left to
>>> a future cleanup.
>>
>> Yeah, this function is quite horrid - so many different paths through it.
>>
>> However, it looks like the only target without HAVE_prologue is actually
>> pdp11, so we're carrying some unnecessary baggage for purely
>> retrocomputing purposes. Paul, can you fix that?
>
> Sure, but... I searched for HAVE_prologue and I can't find any place that set it. There are tests for it, but I see nothing that defines it (other than df-scan.c which defines it as zero if it's not defined, not sure what the point of that is).
>
> I must be missing something...
Isn't it defined by the insn-foo generators based on the existence of a
prologue/epilogue insn in the MD file?
jeff
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