* [Bug bootstrap/100327] [12 regression] bootstrap failure after r12-228
2021-04-29 4:23 [Bug bootstrap/100327] New: [12 regression] bootstrap failure after r12-228 seurer at gcc dot gnu.org
@ 2021-04-29 4:25 ` seurer at gcc dot gnu.org
2021-04-29 7:37 ` rguenth at gcc dot gnu.org
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From: seurer at gcc dot gnu.org @ 2021-04-29 4:25 UTC (permalink / raw)
To: gcc-bugs
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seurer at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Build| |powerpc64*-linux-gnu
Target| |powerpc64*-linux-gnu
Host| |powerpc64*-linux-gnu
--- Comment #1 from seurer at gcc dot gnu.org ---
Note: I could not find an email for patrick.mcgehearty@oracle.com that worked
to add him to the CC: list.
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2021-04-29 4:23 [Bug bootstrap/100327] New: [12 regression] bootstrap failure after r12-228 seurer at gcc dot gnu.org
2021-04-29 4:25 ` [Bug bootstrap/100327] " seurer at gcc dot gnu.org
@ 2021-04-29 7:37 ` rguenth at gcc dot gnu.org
2021-04-29 7:38 ` rguenth at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2021-04-29 7:37 UTC (permalink / raw)
To: gcc-bugs
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Target Milestone|--- |12.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think backends or the FE are supposed to pre-define __LIBGCC_KF_* if
-fbuilding-libgcc
See c-family/c-cppbuiltin.c where it checks for flag_building_libgcc.
Not sure why that doesn't pick up KFmode?
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2021-04-29 4:23 [Bug bootstrap/100327] New: [12 regression] bootstrap failure after r12-228 seurer at gcc dot gnu.org
2021-04-29 4:25 ` [Bug bootstrap/100327] " seurer at gcc dot gnu.org
2021-04-29 7:37 ` rguenth at gcc dot gnu.org
@ 2021-04-29 7:38 ` rguenth at gcc dot gnu.org
2021-04-29 14:40 ` meissner at gcc dot gnu.org
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Possibly
if (!targetm.scalar_mode_supported_p (mode)
|| !targetm.libgcc_floating_mode_supported_p (mode))
continue;
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2021-04-29 7:38 ` rguenth at gcc dot gnu.org
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From: meissner at gcc dot gnu.org @ 2021-04-29 14:40 UTC (permalink / raw)
To: gcc-bugs
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Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |meissner at gcc dot gnu.org
--- Comment #4 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 50708
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50708&action=edit
patch to define floating point constants for KFmode and IFmode.
I am about to kick off a bootstrap with this patch.
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--- Comment #5 from Michael Meissner <meissner at gcc dot gnu.org> ---
Unfortunately the patch does not work because there aren't suffixes for IFmode
and KFmode.
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2021-04-29 4:23 [Bug bootstrap/100327] New: [12 regression] bootstrap failure after r12-228 seurer at gcc dot gnu.org
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2021-04-29 14:56 ` meissner at gcc dot gnu.org
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From: meissner at gcc dot gnu.org @ 2021-04-29 15:45 UTC (permalink / raw)
To: gcc-bugs
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Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #50708|0 |1
is obsolete| |
Ever confirmed|0 |1
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2021-04-29
Assignee|unassigned at gcc dot gnu.org |meissner at gcc dot gnu.org
--- Comment #6 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 50709
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50709&action=edit
Use FLT128 constants for complex KFmode division.
This patch uses the FLT128 constants that are already defined for building
_divkf3.c instead of trying expect the constants to be defined as __LIBGCC_KF.
The __LIBGCC_KF constants are not defined.
I am starting a build now with this patch.
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@ 2021-04-30 1:02 ` meissner at gcc dot gnu.org
2021-04-30 10:11 ` burnus at gcc dot gnu.org
2021-04-30 16:32 ` cvs-commit at gcc dot gnu.org
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From: meissner at gcc dot gnu.org @ 2021-04-30 1:02 UTC (permalink / raw)
To: gcc-bugs
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Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #7 from Michael Meissner <meissner at gcc dot gnu.org> ---
Patch committed on April 29th, 2021.
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2021-04-30 1:02 ` meissner at gcc dot gnu.org
@ 2021-04-30 10:11 ` burnus at gcc dot gnu.org
2021-04-30 16:32 ` cvs-commit at gcc dot gnu.org
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From: burnus at gcc dot gnu.org @ 2021-04-30 10:11 UTC (permalink / raw)
To: gcc-bugs
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Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |burnus at gcc dot gnu.org
--- Comment #8 from Tobias Burnus <burnus at gcc dot gnu.org> ---
(In reply to Michael Meissner from comment #7)
> Patch committed on April 29th, 2021.
Actually, no patch was committed – albeit some patches were submitted. Still,
this PR was closed as FIXED ...
Current status: PR 100350.
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--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Michael Meissner <meissner@gcc.gnu.org>:
https://gcc.gnu.org/g:d9398dd2902a0142fa3b493cf61a340f1f5ab46f
commit r12-325-gd9398dd2902a0142fa3b493cf61a340f1f5ab46f
Author: Michael Meissner <meissner@linux.ibm.com>
Date: Fri Apr 30 12:32:08 2021 -0400
Define target hook to emit KFmode constants for libgcc.
This patch defines a target hook so that the KFmode constants
(__LIBGCC_KF_MAX__, __LIBGCC_KF_MIN__, and __LIBGCC_KF_EPSILON__) needed to
build _divkc3.c in libgcc are defined. The need for these constants were
added
in the April 28th changes to libgcc that added complex division
optimizations.
We only define the KFmode constants if IEEE 128-bit floating point is
supported, but long double does not use the IEEE 128-bit format. If long
double uses the IEEE 128-bit format, it will use TFmode and not KFmode.
gcc/
2021-04-30 Michael Meissner <meissner@linux.ibm.com>
PR bootstrap/100327
* config/rs6000/rs6000.c
(TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P): Define.
(rs6000_libgcc_floating_mode_supported_p): New target hook.
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