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Re: [patch] Fix PR middle-end/41009
- From: Richard Guenther <richard dot guenther at gmail dot com>
- To: John David Anglin <dave at hiauly1 dot hia dot nrc dot ca>
- Cc: gcc-patches at gcc dot gnu dot org, rguenther at suse dot de
- Date: Fri, 18 Sep 2009 10:22:25 +0200
- Subject: Re: [patch] Fix PR middle-end/41009
- References: <20090918004953.DC98A4FB2@hiauly1.hia.nrc.ca>
On Fri, Sep 18, 2009 at 2:49 AM, John David Anglin
<dave@hiauly1.hia.nrc.ca> wrote:
> Backporting the fix for PR 37850 fixes PR 41009. ?Tested on
> hppa2.0w-hp-hpux11.11 and hppa64-hp-hpux11.11 with no regressions.
>
> Ok to apply to 4.3?
Yes.
Thanks,
Richard.
> Dave
> --
> J. David Anglin ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?dave.anglin@nrc-cnrc.gc.ca
> National Research Council of Canada ? ? ? ? ? ? ?(613) 990-0752 (FAX: 952-6602)
>
> 2009-09-17 ?John David Anglin ?<dave.anglin@nrc-cnrc.gc.ca>
>
> ? ? ? ?PR middle-end/41009
> ? ? ? ?Backport from mainline
> ? ? ? ?2009-03-10 ?Richard Guenther ?<rguenther@suse.de>
> ? ? ? ?Nathan Froyd ?<froydnj@codesourcery.com>
>
> ? ? ? ?PR middle-end/37850
> ? ? ? ?* libgcc2.c (__mulMODE3): Use explicit assignments to form the result.
> ? ? ? ?(__divMODE3): Likewise.
>
> Index: libgcc2.c
> ===================================================================
> --- libgcc2.c ? (revision 150499)
> +++ libgcc2.c ? (working copy)
> @@ -1830,6 +1830,7 @@
> ?CONCAT3(__mul,MODE,3) (MTYPE a, MTYPE b, MTYPE c, MTYPE d)
> ?{
> ? MTYPE ac, bd, ad, bc, x, y;
> + ?CTYPE res;
>
> ? ac = a * c;
> ? bd = b * d;
> @@ -1886,7 +1887,9 @@
> ? ? ? ?}
> ? ? }
>
> - ?return x + I * y;
> + ?__real__ res = x;
> + ?__imag__ res = y;
> + ?return res;
> ?}
> ?#endif /* complex multiply */
>
> @@ -1897,6 +1900,7 @@
> ?CONCAT3(__div,MODE,3) (MTYPE a, MTYPE b, MTYPE c, MTYPE d)
> ?{
> ? MTYPE denom, ratio, x, y;
> + ?CTYPE res;
>
> ? /* ??? We can get better behavior from logarithmic scaling instead of
> ? ? ?the division. ?But that would mean starting to link libgcc against
> @@ -1942,7 +1946,9 @@
> ? ? ? ?}
> ? ? }
>
> - ?return x + I * y;
> + ?__real__ res = x;
> + ?__imag__ res = y;
> + ?return res;
> ?}
> ?#endif /* complex divide */
>
>