From: Tamar Christina <Tamar.Christina@arm.com>
To: Michael Meissner <meissner@linux.vnet.ibm.com>
Cc: GCC Patches <gcc-patches@gcc.gnu.org>, nd <nd@arm.com>,
"law@redhat.com" <law@redhat.com>, "ian@airs.com" <ian@airs.com>,
"rguenther@suse.de" <rguenther@suse.de>
Subject: RE: [GCC][PATCH][mid-end] Optimize x * copysign (1.0, y) [Patch (1/2)]
Date: Tue, 13 Jun 2017 10:14:00 -0000 [thread overview]
Message-ID: <VI1PR0801MB203191305EF95DCFCC5CDBA2FFC20@VI1PR0801MB2031.eurprd08.prod.outlook.com> (raw)
In-Reply-To: <20170612195051.GA13013@ibm-tiger.the-meissners.org>
>
> Please only enable this if you have XORSIGN and XORSIGNF.
>
> On the PowerPC this would involve moving the value from the
> vector/floating point registers to the general purpose registers to do the XOR
> operation and then back to the vector/floating point registers.
>
Fair enough, I think using Richard's earlier change request this should be fairly simple.
I'll update the patch.
Thanks
>
> --
> Michael Meissner, IBM
> IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
> email: meissner@linux.vnet.ibm.com, phone: +1 (978) 899-4797
next prev parent reply other threads:[~2017-06-13 10:14 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-12 7:56 Tamar Christina
2017-06-12 9:10 ` Richard Biener
2017-06-12 16:27 ` Richard Sandiford
2017-06-13 10:22 ` Tamar Christina
2017-06-13 10:17 ` Tamar Christina
2017-06-12 16:52 ` Joseph Myers
2017-06-12 19:50 ` Michael Meissner
2017-06-13 10:14 ` Tamar Christina [this message]
2017-06-24 23:53 ` Andrew Pinski
2017-06-26 2:09 ` Andrew Pinski
2017-06-26 8:46 ` Tamar Christina
2017-06-26 7:26 ` Richard Biener
2017-07-09 23:21 ` Andrew Pinski
2017-07-10 15:47 ` Tamar Christina
2017-07-18 8:05 ` Tamar Christina
2017-07-18 8:38 ` Richard Biener
2017-07-18 9:22 ` Tamar Christina
2017-07-18 10:19 ` Richard Biener
2017-07-18 11:00 ` Tamar Christina
2017-07-18 11:19 ` Richard Biener
2017-07-18 11:24 ` Tamar Christina
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