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* [Bug libc/25635] arm: Wrong sysdep order selection for soft-fp
[not found] <bug-25635-131@http.sourceware.org/bugzilla/>
@ 2020-03-10 6:24 ` sandra at codesourcery dot com
2020-03-10 12:13 ` adhemerval.zanella at linaro dot org
2020-03-24 11:51 ` cvs-commit at gcc dot gnu.org
2 siblings, 0 replies; 3+ messages in thread
From: sandra at codesourcery dot com @ 2020-03-10 6:24 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=25635
sandra at codesourcery dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sandra at codesourcery dot com
--- Comment #3 from sandra at codesourcery dot com ---
I'm seeing this bug on the 2.31 branch as well, and the patch on master appears
to fix it. Do you want to backport it to the branch?
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* [Bug libc/25635] arm: Wrong sysdep order selection for soft-fp
[not found] <bug-25635-131@http.sourceware.org/bugzilla/>
2020-03-10 6:24 ` [Bug libc/25635] arm: Wrong sysdep order selection for soft-fp sandra at codesourcery dot com
@ 2020-03-10 12:13 ` adhemerval.zanella at linaro dot org
2020-03-24 11:51 ` cvs-commit at gcc dot gnu.org
2 siblings, 0 replies; 3+ messages in thread
From: adhemerval.zanella at linaro dot org @ 2020-03-10 12:13 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=25635
--- Comment #4 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
(In reply to sandra from comment #3)
> I'm seeing this bug on the 2.31 branch as well, and the patch on master
> appears to fix it. Do you want to backport it to the branch?
I will backport it.
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* [Bug libc/25635] arm: Wrong sysdep order selection for soft-fp
[not found] <bug-25635-131@http.sourceware.org/bugzilla/>
2020-03-10 6:24 ` [Bug libc/25635] arm: Wrong sysdep order selection for soft-fp sandra at codesourcery dot com
2020-03-10 12:13 ` adhemerval.zanella at linaro dot org
@ 2020-03-24 11:51 ` cvs-commit at gcc dot gnu.org
2 siblings, 0 replies; 3+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-03-24 11:51 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=25635
--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.30/master branch has been updated by Adhemerval Zanella
<azanella@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4f0ae74135a58eb88c76cd061a984e919e5a2433
commit 4f0ae74135a58eb88c76cd061a984e919e5a2433
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Thu Mar 5 13:14:41 2020 +0000
arm: Fix softp-fp Implies (BZ #25635)
The commit "arm: Split BE/LE abilist"
(1673ba87fefe019c834c09d33673d1d453ea698d) changed the soft-fp order for
ARM selection when __SOFTFP__ is defined by the compiler.
On 2.30 the sysdeps order is:
2.30
sysdeps/unix/sysv/linux/arm
sysdeps/arm/nptl
sysdeps/unix/sysv/linux
sysdeps/nptl
sysdeps/pthread
sysdeps/gnu
sysdeps/unix/inet
sysdeps/unix/sysv
sysdeps/unix/arm
sysdeps/unix
sysdeps/posix
sysdeps/arm/nofpu
sysdeps/ieee754/soft-fp
sysdeps/arm
sysdeps/wordsize-32
sysdeps/ieee754/flt-32
sysdeps/ieee754/dbl-64
sysdeps/ieee754
sysdeps/generic
While on master is:
sysdeps/unix/sysv/linux/arm/le
sysdeps/unix/sysv/linux/arm
sysdeps/arm/nptl
sysdeps/unix/sysv/linux
sysdeps/nptl
sysdeps/pthread
sysdeps/gnu
sysdeps/unix/inet
sysdeps/unix/sysv
sysdeps/unix/arm
sysdeps/unix
sysdeps/posix
sysdeps/arm/le
sysdeps/arm
sysdeps/wordsize-32
sysdeps/ieee754/flt-32
sysdeps/ieee754/dbl-64
sysdeps/arm/nofpu
sysdeps/ieee754/soft-fp
sysdeps/ieee754
sysdeps/generic
It make the build select some routines (fadd, fdiv, fmul, fsub, and fma)
on ieee754/flt-32 and ieee754/dbl-64 that requires fenv support to be
correctly rounded which in turns lead to math failures since the
__SOFTFP__ does not have fenv support.
With this patch the order is now:
sysdeps/unix/sysv/linux/arm/le
sysdeps/unix/sysv/linux/arm
sysdeps/arm/nptl
sysdeps/unix/sysv/linux
sysdeps/nptlsysdeps/pthread
sysdeps/gnu
sysdeps/unix/inet
sysdeps/unix/sysv
sysdeps/unix/arm
sysdeps/unix
sysdeps/posix
sysdeps/arm/le/nofpu
sysdeps/arm/nofpu
sysdeps/ieee754/soft-fp
sysdeps/arm/le
sysdeps/arm
sysdeps/wordsize-32
sysdeps/ieee754/flt-32
sysdeps/ieee754/dbl-64
sysdeps/ieee754
sysdeps/generic
Checked on arm-linux-gnuaebi.
(cherry picked from commit af09e5e5d9ec3ca20891e61a6922eac984fcbdc4)
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2020-03-10 6:24 ` [Bug libc/25635] arm: Wrong sysdep order selection for soft-fp sandra at codesourcery dot com
2020-03-10 12:13 ` adhemerval.zanella at linaro dot org
2020-03-24 11:51 ` cvs-commit at gcc dot gnu.org
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