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Re: [PATCH]: Fix PR middle-end/56382 -- Only move MODE_COMPLEX_FLOAT by parts if we can create pseudos

From: John David Anglin <dave dot anglin at bell dot net>
To: Eric Botcazou <ebotcazou at adacore dot com>
Cc: gcc-patches at gcc dot gnu dot org, Steven Bosscher <stevenb dot gcc at gmail dot com>
Date: Sun, 1 Sep 2013 18:31:54 -0400
Subject: Re: [PATCH]: Fix PR middle-end/56382 -- Only move MODE_COMPLEX_FLOAT by parts if we can create pseudos
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References: <BLU0-SMTP2690D4975D21F5B1DC549397540 at phx dot gbl> <CABu31nO4UDdKTLKW=-14SqUpvXP06jV4tMeem5RsyzNG9YkfVA at mail dot gmail dot com> <BLU0-SMTP1902D63F11B9BF4E80626397340 at phx dot gbl> <201308301238 dot 58640 dot ebotcazou at adacore dot com>

On 30-Aug-13, at 6:38 AM, Eric Botcazou wrote:

Let's avoid trying to do something general since this seems to bereally a

corner case.  Can't we simply deal with hard registers specially?

 /* Move floating point as parts if splitting is easy.  */
 if (GET_MODE_CLASS (mode) == MODE_COMPLEX_FLOAT

&& optab_handler (mov_optab, GET_MODE_INNER (mode)) !=CODE_FOR_nothing

     && !(REG_P (x)
          && HARD_REGISTER_P (x)
          && hard_regno_nregs[REGNO(x)][mode] == 1)
     && !(REG_P (y)
          && HARD_REGISTER_P (y)
          && hard_regno_nregs[REGNO(y)][mode] == 1))
   try_int = false;

Eric, your patch works for me. Tested on hppa2.0w-hp-hpux11.11 andhppa64-hp-hpux11.11.


Dave
--
John David Anglin	dave.anglin@bell.net

Attachment: expr.c.d.2.txt
Description: Text document

Follow-Ups:
- Re: [PATCH]: Fix PR middle-end/56382 -- Only move MODE_COMPLEX_FLOAT by parts if we can create pseudos
  - From: Eric Botcazou

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