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Re: nops

From: Jamie Prescott <jpresss at yahoo dot com>
To: Andrew Pinski <pinskia at gmail dot com>
Cc: Ian Lance Taylor <iant at google dot com>, gcc at gcc dot gnu dot org
Date: Thu, 21 May 2009 08:26:28 -0700 (PDT)
Subject: Re: nops
References: <167204.32684.qm@web111614.mail.gq1.yahoo.com> <m3zld7xdn9.fsf@google.com> <633817.47788.qm@web111611.mail.gq1.yahoo.com> <de8d50360905210822ya33cc90ndc7d201094b6e300@mail.gmail.com>

> From: Andrew Pinski <pinskia@gmail.com>

> To: Jamie Prescott <jpresss@yahoo.com>
> Cc: Ian Lance Taylor <iant@google.com>; gcc@gcc.gnu.org
> Sent: Thursday, May 21, 2009 8:22:00 AM
> Subject: Re: nops
> 
> On Thu, May 21, 2009 at 8:13 AM, Jamie Prescott wrote:
> > My target does not have anything special WRT alignment. I even set the 
> function
> > alignment to 8, and it still issues gen_nop().
> > This seem to happen only with -O0, or at least I noticed it only under such 
> condition
> > so far.
> 
> so it happens at -O0 so that the debugger is able to place a
> breakpoint at some gotos.

Thanks! Makes sense, and it means that I can define to an empty insn for the
version of the VM that does not have 'nop'.


- Jamie

References:
- nops
  - From: Jamie Prescott
- Re: nops
  - From: Ian Lance Taylor
- Re: nops
  - From: Jamie Prescott
- Re: nops
  - From: Andrew Pinski

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