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From: tprince@computer.org
To: gcc-gnats@gcc.gnu.org
Subject: middle-end/7199: ia64.md missing usual fnma patterns
Date: Wed, 03 Jul 2002 08:36:00 -0000	[thread overview]
Message-ID: <20020703153128.25960.qmail@sources.redhat.com> (raw)


>Number:         7199
>Category:       middle-end
>Synopsis:       ia64.md missing usual fnma patterns
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Wed Jul 03 08:36:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Tim Prince
>Release:        3.1.1 20020701
>Organization:
>Environment:
red hat 7.2
>Description:
fnma patterns in ia64.md don't match with normal source code so generated code always uses separate multiply and subtract
>How-To-Repeat:
gcc -O2 -S -funroll-loops -fforce-addr kcs.c
shows several missed opportunities to employ fnma instructions
>Fix:
patch included for ia64.md which adds fnma patterns for SF, DF, and TF
>Release-Note:
>Audit-Trail:
>Unformatted:
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                 reply	other threads:[~2002-07-03 15:36 UTC|newest]

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