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From: dje@watson.ibm.com
To: gcc-gnats@gcc.gnu.org
Subject: optimization/2076: scheduler ignores data dependency
Date: Sun, 01 Apr 2001 00:00:00 -0000	[thread overview]
Message-ID: <20010223223619.3471.qmail@sourceware.cygnus.com> (raw)

>Number:         2076
>Category:       optimization
>Synopsis:       scheduler ignores data dependency
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Feb 23 14:46:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     dje@watson.ibm.com
>Release:        gcc-3.0 20010222 (prerelease)
>Organization:
>Environment:
rs6000-ibm-aix4.3.3.0
>Description:
c-torture/execute/980205.c demonstrates a bug where the
first scheduler pass moves a load of a parameter from the
stack argument area before the parameter has been spilled
to the argument area.  Compiler pass 980205.c.16.regmove
shows the arguments spilled to the argument area before
FP pseudo is loaded.  After the scheduling pass, the load
from the pseudo has been moved to the beginning of the
basic block before the argument area on the stack is valid.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:


             reply	other threads:[~2001-04-01  0:00 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-04-01  0:00 dje [this message]
2001-06-11 10:13 dje

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