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Re: [PATCH, middle-end]: Generate +QNaN using real_nan() in reg-stack.c

From: Paolo Bonzini <bonzini at gnu dot org>
To: Richard Guenther <richard dot guenther at gmail dot com>
Cc: Uros Bizjak <ubizjak at gmail dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Thu, 06 Nov 2008 11:35:33 +0100
Subject: Re: [PATCH, middle-end]: Generate +QNaN using real_nan() in reg-stack.c
References: <5787cf470811060040p6b8ca61cw987bc78838d8e15d@mail.gmail.com> <84fc9c000811060203r16cfb73fw7e3767c326dabf3a@mail.gmail.com>

Richard Guenther wrote:
> On Thu, Nov 6, 2008 at 9:40 AM, Uros Bizjak <ubizjak@gmail.com> wrote:
>> Hello!
>>
>> Instead of playing tricks with gen_lowpart, this patch generates +QNaN
>> using available infrastructure for manipulating real numbers.
>>
>> 2008-11-06  Uros Bizjak  <ubizjak@gmail.com>
>>
>>        * reg-stack.c (reg_to_stack): Generate +QNaN using real_nan.
>>
>> Patch was bootstrapped and regression tested on i686-pc-linux-gnu. OK
>> for mainline under obvious rule?
> 
> Ok.

Couldn't reg-stack.c be considered part of the i386 back-end?  After
all, it's just a machine-dependent reorg that executes earlier in the
pipeline, and no other back-end will hopefully ever use it...

Paolo

Follow-Ups:
- Re: [PATCH, middle-end]: Generate +QNaN using real_nan() in reg-stack.c
  - From: Ian Lance Taylor

References:
- [PATCH, middle-end]: Generate +QNaN using real_nan() in reg-stack.c
  - From: Uros Bizjak
- Re: [PATCH, middle-end]: Generate +QNaN using real_nan() in reg-stack.c
  - From: Richard Guenther

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