Red Hat Bugzilla – Bug 463605
[LTC 6.0 FEAT] 201178:Decimal floating point support in gcc backend (HW support)
Last modified: 2013-03-07 21:04:40 EST
Emily J. Ratliff <firstname.lastname@example.org> - 2008-09-16 18:05 EDT
1. Feature Overview:
Feature Id: 
a. Name of Feature: Decimal floating point support in gcc backend (HW support)
b. Feature Description
This item is to enable the s390 GCC back to allow DFP type values to reside in integer and floating
point registers and to provide the respective patterns to move such values. Together with the
decnumber software layer this already provides full dfp support without using any new hardware
instructions. This item on top of GNU0503.1 enables gcc to make use of the new hardware
instructions to implement operations on DFP type values.
Additional Comments: This feature is satisfied when gcc 4.3 get included
2. Feature Details:
Arch Specificity: Purely Arch Specific Code
Affects Toolchain: Yes
Delivery Mechanism: Backport
Request Type: Toolchain - Enhancement from IBM
d. Upstream Acceptance: Accepted
Sponsor Priority 1
f. Severity: High
IBM Confidential: no
Code Contribution: IBM code
g. Component Version Target: gcc 4.3 or later
3. Business Case
Make use of new hardware instructions and thus Improve Performance of Applications running
operations on DFP type values.
4. Primary contact at Red Hat:
5. Primary contacts at Partner:
Project Management Contact:
Hans-Georg Markgraf, email@example.com, Boeblingen 49-7031-16-3978
Gonzalo Muelas Serrano, firstname.lastname@example.org
Thomas Schwarz, email@example.com
RHEL 6 will include at least gcc-4.3, so this should not be a problem.
The feature requested has already been accepted into the upstream code base
planned for the next major release of Red Hat Enterprise Linux.
When the next milestone release of Red Hat Enterprise Linux 6 is available,
please verify that the feature requested is present and functioning as
Fixed in 'gcc-4.4.1-22.el6', included in compose 'RHEL6.0-20091028.0'.
Moving to ON_QA.
IBM is signed up to test and provide feedback
------- Comment From firstname.lastname@example.org 2010-06-11 10:59 EDT-------
This feature is verified on R6 snapshots
Set feature to "verified" Thx
Red Hat Enterprise Linux Beta 2 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.