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Re: [PATCH] Fix PR25500, pessimization on SSE code caused by count_type_elements (expr.c)

From: Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>
To: Mark Mitchell <mark at codesourcery dot com>
Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, Andrew Pinski <pinskia at physics dot uc dot edu>
Date: Thu, 17 Aug 2006 18:19:44 +0200
Subject: Re: [PATCH] Fix PR25500, pessimization on SSE code caused by count_type_elements (expr.c)
References: <44D729AA.3030803@lu.unisi.ch> <44E3B359.7080502@codesourcery.com> <44E40FB6.1040502@lu.unisi.ch> <44E491E4.30905@codesourcery.com>

That probably fits in a register on most machines, too. I guess the answer is that such structures are BLKmode, not SImode, but that if they *were* SImode (which, conceivably, they could be in future), you'd consider them 1-element structures?

Hmm... I guess the answer is "in this case everything would break if we did, so I was probably on a false path".

To be clear, I'm not rejecting your patch; I'm just not understanding it. :-)

You convinced me to withdraw it anyway. :-)

Paolo

References:
- [PATCH] Fix PR25500, pessimization on SSE code caused by count_type_elements (expr.c)
  - From: Paolo Bonzini
- Re: [PATCH] Fix PR25500, pessimization on SSE code caused by count_type_elements (expr.c)
  - From: Mark Mitchell
- Re: [PATCH] Fix PR25500, pessimization on SSE code caused by count_type_elements (expr.c)
  - From: Paolo Bonzini
- Re: [PATCH] Fix PR25500, pessimization on SSE code caused by count_type_elements (expr.c)
  - From: Mark Mitchell

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