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From: scott.duplichan@hp.com
To: gcc-gnats@gcc.gnu.org
Subject: optimization/10654: feature request: non-temporal store, 64-bit general purpose register
Date: Wed, 07 May 2003 02:46:00 -0000 [thread overview]
Message-ID: <20030507024357.21758.qmail@sources.redhat.com> (raw)
>Number: 10654
>Category: optimization
>Synopsis: feature request: non-temporal store, 64-bit general purpose register
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: support
>Submitter-Id: net
>Arrival-Date: Wed May 07 02:46:01 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: scott duplichan
>Release: unknown-1.0
>Organization:
>Environment:
all
>Description:
Please forgive me if this is not the place for a feature request.
Feature request: _mm_stream_si64
An intrinsic for non-temporal store of ordinary 64-bit data is needed. IA64, AMD64, and possible others support this natively.
This type of store can achieve a 2X or so performance gain.
>How-To-Repeat:
On a system that supports native 64-bit registers, try to do a non-temporal store without using assembly language.
>Fix:
Implement an intrinsic function that stores a 64-bit general purpose register using a non-temporal store.
>Release-Note:
>Audit-Trail:
>Unformatted:
reply other threads:[~2003-05-07 2:46 UTC|newest]
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