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I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
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Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
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Complementing commit 4a06ceea33ec ("sysdeps/ieee754/soft-fp: ignore
maybe-uninitialized with -O [BZ #19444]") and commit 27c5e756a2a8
("sysdeps/ieee754: prevent maybe-uninitialized errors with -O [BZ
#19444]") also fix compilation errors observed at -O1 in `__ddivl' and
`__fdivl' with GCC 9 and RISC-V targets:
In file included from ../soft-fp/soft-fp.h:318,
from ../sysdeps/ieee754/soft-fp/s_fdivl.c:27:
../sysdeps/ieee754/soft-fp/s_fdivl.c: In function '__fdivl':
../soft-fp/op-2.h:108:9: error: 'R_f1' may be used uninitialized in this function [-Werror=maybe-uninitialized]
108 | : (X##_f1 << (2*_FP_W_TYPE_SIZE - (N)))) \
| ^
../sysdeps/ieee754/soft-fp/s_fdivl.c:37:14: note: 'R_f1' was declared here
37 | FP_DECL_Q (R);
| ^
../soft-fp/op-common.h:39:3: note: in expansion of macro '_FP_FRAC_DECL_2'
39 | _FP_FRAC_DECL_##wc (X)
| ^~~~~~~~~~~~~~
../soft-fp/quad.h:226:24: note: in expansion of macro '_FP_DECL'
226 | # define FP_DECL_Q(X) _FP_DECL (2, X)
| ^~~~~~~~
../sysdeps/ieee754/soft-fp/s_fdivl.c:37:3: note: in expansion of macro 'FP_DECL_Q'
37 | FP_DECL_Q (R);
| ^~~~~~~~~
../soft-fp/op-2.h:109:8: error: 'R_f0' may be used uninitialized in this function [-Werror=maybe-uninitialized]
109 | | X##_f0) != 0)); \
| ^
../sysdeps/ieee754/soft-fp/s_fdivl.c:37:14: note: 'R_f0' was declared here
37 | FP_DECL_Q (R);
| ^
../soft-fp/op-common.h:39:3: note: in expansion of macro '_FP_FRAC_DECL_2'
39 | _FP_FRAC_DECL_##wc (X)
| ^~~~~~~~~~~~~~
../soft-fp/quad.h:226:24: note: in expansion of macro '_FP_DECL'
226 | # define FP_DECL_Q(X) _FP_DECL (2, X)
| ^~~~~~~~
../sysdeps/ieee754/soft-fp/s_fdivl.c:37:3: note: in expansion of macro 'FP_DECL_Q'
37 | FP_DECL_Q (R);
| ^~~~~~~~~
In file included from ../soft-fp/soft-fp.h:318,
from ../sysdeps/ieee754/soft-fp/s_ddivl.c:31:
../sysdeps/ieee754/soft-fp/s_ddivl.c: In function '__ddivl':
../soft-fp/op-2.h:98:25: error: 'R_f1' may be used uninitialized in this function [-Werror=maybe-uninitialized]
98 | X##_f0 = (X##_f1 << (_FP_W_TYPE_SIZE - (N)) | X##_f0 >> (N) \
| ^~
../sysdeps/ieee754/soft-fp/s_ddivl.c:41:14: note: 'R_f1' was declared here
41 | FP_DECL_Q (R);
| ^
../soft-fp/op-2.h:37:36: note: in definition of macro '_FP_FRAC_DECL_2'
37 | _FP_W_TYPE X##_f0 _FP_ZERO_INIT, X##_f1 _FP_ZERO_INIT
| ^
../soft-fp/quad.h:226:24: note: in expansion of macro '_FP_DECL'
226 | # define FP_DECL_Q(X) _FP_DECL (2, X)
| ^~~~~~~~
../sysdeps/ieee754/soft-fp/s_ddivl.c:41:3: note: in expansion of macro 'FP_DECL_Q'
41 | FP_DECL_Q (R);
| ^~~~~~~~~
../soft-fp/op-2.h:101:17: error: 'R_f0' may be used uninitialized in this function [-Werror=maybe-uninitialized]
101 | : (X##_f0 << (_FP_W_TYPE_SIZE - (N))) != 0)); \
| ^~
../sysdeps/ieee754/soft-fp/s_ddivl.c:41:14: note: 'R_f0' was declared here
41 | FP_DECL_Q (R);
| ^
../soft-fp/op-2.h:37:14: note: in definition of macro '_FP_FRAC_DECL_2'
37 | _FP_W_TYPE X##_f0 _FP_ZERO_INIT, X##_f1 _FP_ZERO_INIT
| ^
../soft-fp/quad.h:226:24: note: in expansion of macro '_FP_DECL'
226 | # define FP_DECL_Q(X) _FP_DECL (2, X)
| ^~~~~~~~
../sysdeps/ieee754/soft-fp/s_ddivl.c:41:3: note: in expansion of macro 'FP_DECL_Q'
41 | FP_DECL_Q (R);
| ^~~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [.../sysd-rules:587: .../math/s_fdivl.o] Error 1
make[2]: *** Waiting for unfinished jobs....
cc1: all warnings being treated as errors
make[2]: *** [.../sysd-rules:587: .../math/s_ddivl.o] Error 1
This comes from cases in _FP_DIV that return a result described as
FP_CLS_ZERO or FP_CLS_INF and do not initialize the fractional part,
which is then operated on unconditionally in FP_TRUNC_COOKED before
being ignored by _FP_PACK_CANONICAL.
Clearly at this optimization level GCC cannot guarantee to be able to
determine that the fractional part is ultimately unused, so ignore the
error as with the earlier commits referred, letting compilation proceed.
[BZ #19444]
* sysdeps/ieee754/soft-fp/s_ddivl.c (__ddivl): Ignore errors
from `-Wmaybe-uninitialized'.
* sysdeps/ieee754/soft-fp/s_fdivl.c (__fdivl): Likewise.
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quad.h have
#if _FP_W_TYPE_SIZE < 64
union _FP_UNION_Q
{
Use 4 _FP_W_TYPEs
}
#else
union _FP_UNION_Q
{
Use 2 _FP_W_TYPEs
}
#endif
Replace
#if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q
with
#if _FP_W_TYPE_SIZE < 64
to check whether 4 or 2 _FP_W_TYPEs are used for IEEE quad precision.
Tested with build-many-glibcs.py.
[BZ #24066]
* soft-fp/extenddftf2.c: Use "_FP_W_TYPE_SIZE < 64" to check if
4_FP_W_TYPEs are used for IEEE quad precision.
* soft-fp/extendhftf2.c: Likewise.
* soft-fp/extendsftf2.c: Likewise.
* soft-fp/extendxftf2.c: Likewise.
* soft-fp/trunctfdf2.c: Likewise.
* soft-fp/trunctfhf2.c: Likewise.
* soft-fp/trunctfsf2.c: Likewise.
* soft-fp/trunctfxf2.c: Likewise.
* sysdeps/alpha/ots_cvttx.c: Likewise.
* sysdeps/alpha/ots_cvtxt.c: Likewise.
* sysdeps/ieee754/soft-fp/s_daddl.c: Likewise.
* sysdeps/ieee754/soft-fp/s_ddivl.c: Likewise.
* sysdeps/ieee754/soft-fp/s_dmull.c: Likewise.
* sysdeps/ieee754/soft-fp/s_dsubl.c: Likewise.
* sysdeps/ieee754/soft-fp/s_faddl.c: Likewise.
* sysdeps/ieee754/soft-fp/s_fdivl.c: Likewise.
* sysdeps/ieee754/soft-fp/s_fmull.c: Likewise.
* sysdeps/ieee754/soft-fp/s_fsubl.c: Likewise.
* sysdeps/sparc/sparc32/q_dtoq.c: Likewise.
* sysdeps/sparc/sparc32/q_qtod.c: Likewise.
* sysdeps/sparc/sparc32/q_qtos.c: Likewise.
* sysdeps/sparc/sparc32/q_stoq.c: Likewise.
* sysdeps/sparc/sparc64/qp_dtoq.c: Likewise.
* sysdeps/sparc/sparc64/qp_qtod.c: Likewise.
* sysdeps/sparc/sparc64/qp_qtos.c: Likewise.
* sysdeps/sparc/sparc64/qp_stoq.c: Likewise.
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* All files with FSF copyright notices: Update copyright dates
using scripts/update-copyrights.
* locale/programs/charmap-kw.h: Regenerated.
* locale/programs/locfile-kw.h: Likewise.
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This patch adds the narrowing divide functions from TS 18661-1 to
glibc's libm: fdiv, fdivl, ddivl, f32divf64, f32divf32x, f32xdivf64
for all configurations; f32divf64x, f32divf128, f64divf64x,
f64divf128, f32xdivf64x, f32xdivf128, f64xdivf128 for configurations
with _Float64x and _Float128; __nldbl_ddivl for ldbl-opt.
The changes are mostly essentially the same as for the other narrowing
functions, so the description of those generally applies to this patch
as well.
Tested for x86_64, x86, mips64 (all three ABIs, both hard and soft
float) and powerpc, and with build-many-glibcs.py.
* math/Makefile (libm-narrow-fns): Add div.
(libm-test-funcs-narrow): Likewise.
* math/Versions (GLIBC_2.28): Add narrowing divide functions.
* math/bits/mathcalls-narrow.h (div): Use __MATHCALL_NARROW.
* math/gen-auto-libm-tests.c (test_functions): Add div.
* math/math-narrow.h (CHECK_NARROW_DIV): New macro.
(NARROW_DIV_ROUND_TO_ODD): Likewise.
(NARROW_DIV_TRIVIAL): Likewise.
* sysdeps/ieee754/float128/float128_private.h (__fdivl): New
macro.
(__ddivl): Likewise.
* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fdiv and
ddiv.
(CFLAGS-nldbl-ddiv.c): New variable.
(CFLAGS-nldbl-fdiv.c): Likewise.
* sysdeps/ieee754/ldbl-opt/Versions (GLIBC_2.28): Add
__nldbl_ddivl.
* sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl_ddivl): New
prototype.
* manual/arith.texi (Misc FP Arithmetic): Document fdiv, fdivl,
ddivl, fMdivfN, fMdivfNx, fMxdivfN and fMxdivfNx.
* math/auto-libm-test-in: Add tests of div.
* math/auto-libm-test-out-narrow-div: New generated file.
* math/libm-test-narrow-div.inc: New file.
* sysdeps/i386/fpu/s_f32xdivf64.c: Likewise.
* sysdeps/ieee754/dbl-64/s_f32xdivf64.c: Likewise.
* sysdeps/ieee754/dbl-64/s_fdiv.c: Likewise.
* sysdeps/ieee754/float128/s_f32divf128.c: Likewise.
* sysdeps/ieee754/float128/s_f64divf128.c: Likewise.
* sysdeps/ieee754/float128/s_f64xdivf128.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_ddivl.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_f64xdivf128.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_fdivl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_ddivl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_fdivl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_ddivl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_fdivl.c: Likewise.
* sysdeps/ieee754/ldbl-opt/nldbl-ddiv.c: Likewise.
* sysdeps/ieee754/ldbl-opt/nldbl-fdiv.c: Likewise.
* sysdeps/ieee754/soft-fp/s_ddivl.c: Likewise.
* sysdeps/ieee754/soft-fp/s_fdiv.c: Likewise.
* sysdeps/ieee754/soft-fp/s_fdivl.c: Likewise.
* sysdeps/powerpc/fpu/libm-test-ulps: Update.
* sysdeps/mach/hurd/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
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