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introduce sysdep header math-use-builtins.h to replace aarch64
implementations with corresponding generic ones.
- newly inroduced generic sqrt{,f}, fma{,f}
- existing floor{,f}, nearbyint{,f}, rint{,f}, round{,f}, trunc{,f}
- Note that generic copysign was already enabled (via generic
math-use-builtins.h) now thru sysdep header
Tested with build-many-glibcs for aarch64-linux-gnu
This is a non functional change and aarch64 libm before/after was
byte invariant as compared below:
| cd /SCRATCH/vgupta/gnu/install-glibc-A-baseline
| for i in `find . -name libm-2.31.9000.so`; do
| echo $i; diff $i /SCRATCH/vgupta/gnu/install-glibc-C-reduce-scope/$i ;
| echo $?;
| done
| ./aarch64-linux-gnu/lib64/libm-2.31.9000.so
| 0
| ./arm-linux-gnueabi/lib/libm-2.31.9000.so
| 0
| ./x86_64-linux-gnu/lib64/libm-2.31.9000.so
| 0
| ./arm-linux-gnueabihf/lib/libm-2.31.9000.so
| 0
| ./riscv64-linux-gnu-rv64imac-lp64/lib64/lp64/libm-2.31.9000.so
| 0
| ./riscv64-linux-gnu-rv64imafdc-lp64/lib64/lp64/libm-2.31.9000.so
| 0
| ./powerpc-linux-gnu/lib/libm-2.31.9000.so
| 0
| ./microblaze-linux-gnu/lib/libm-2.31.9000.so
| 0
| ./nios2-linux-gnu/lib/libm-2.31.9000.so
| 0
| ./hppa-linux-gnu/lib/libm-2.31.9000.so
| 0
| ./s390x-linux-gnu/lib64/libm-2.31.9000.so
| 0
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^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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* 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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* 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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Continuing the preparation for additional _FloatN / _FloatNx function
aliases, this patch makes aarch64 libm function implementations use
libm_alias_float to define function aliases.
Tested with build-many-glibcs.py for aarch64-linux-gnu that installed
stripped shared libraries are unchanged by the patch.
* sysdeps/aarch64/fpu/s_ceilf.c: Include <libm-alias-float.h>.
(ceilf): Define using libm_alias_float.
* sysdeps/aarch64/fpu/s_floorf.c: Include <libm-alias-float.h>.
(floorf): Define using libm_alias_float.
* sysdeps/aarch64/fpu/s_fmaf.c: Include <libm-alias-float.h>.
(fmaf): Define using libm_alias_float.
* sysdeps/aarch64/fpu/s_fmaxf.c: Include <libm-alias-float.h>.
(fmaxf): Define using libm_alias_float.
* sysdeps/aarch64/fpu/s_fminf.c: Include <libm-alias-float.h>.
(fminf): Define using libm_alias_float.
* sysdeps/aarch64/fpu/s_llrintf.c: Include <libm-alias-float.h>.
(llrintf): Define using libm_alias_float.
* sysdeps/aarch64/fpu/s_llroundf.c: Include <libm-alias-float.h>.
(llroundf): Define using libm_alias_float.
* sysdeps/aarch64/fpu/s_lrintf.c: Include <libm-alias-float.h>.
(lrintf): Define using libm_alias_float.
* sysdeps/aarch64/fpu/s_lroundf.c: Include <libm-alias-float.h>.
(lroundf): Define using libm_alias_float.
* sysdeps/aarch64/fpu/s_nearbyintf.c: Include
<libm-alias-float.h>.
(nearbyintf): Define using libm_alias_float.
* sysdeps/aarch64/fpu/s_rintf.c: Include <libm-alias-float.h>.
(rintf): Define using libm_alias_float.
* sysdeps/aarch64/fpu/s_roundf.c: Include <libm-alias-float.h>.
(roundf): Define using libm_alias_float.
* sysdeps/aarch64/fpu/s_truncf.c: Include <libm-alias-float.h>.
(truncf): Define using libm_alias_float.
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This patch converts asm statements into builtins for AArch64. As an
example for the file sysdeps/aarch64/fpu/s_ceil.c, we convert the
function from
double
__ceil (double x)
{
double result;
asm ("frintp\t%d0, %d1" :
"=w" (result) : "w" (x) );
return result;
}
into
double
__ceil (double x)
{
return __builtin_ceil (x);
}
Tested on aarch64-linux-gnu with gcc-4.9.4 and gcc-6.
* sysdeps/aarch64/fpu/e_sqrt.c (ieee754_sqrt): Replace asm statements
with __builtin_sqrt.
* sysdeps/aarch64/fpu/e_sqrtf.c (ieee754_sqrtf): Replace asm statements
with __builtin_sqrtf.
* sysdeps/aarch64/fpu/s_ceil.c (__ceil): Replace asm statements
with __builtin_ceil.
* sysdeps/aarch64/fpu/s_ceilf.c (__ceilf): Replace asm statements
with __builtin_ceilf.
* sysdeps/aarch64/fpu/s_floor.c (__floor): Replace asm statements
with __builtin_floor.
* sysdeps/aarch64/fpu/s_floorf.c (__floorf): Replace asm statements
with __builtin_floorf.
* sysdeps/aarch64/fpu/s_fma.c (__fma): Replace asm statements
with __builtin_fma.
* sysdeps/aarch64/fpu/s_fmaf.c (__fmaf): Replace asm statements
with __builtin_fmaf.
* sysdeps/aarch64/fpu/s_fmax.c (__fmax): Replace asm statements
with __builtin_fmax.
* sysdeps/aarch64/fpu/s_fmaxf.c (__fmaxf): Replace asm statements
with __builtin_fmaxf.
* sysdeps/aarch64/fpu/s_fmin.c (__fmin): Replace asm statements
with __builtin_fmin.
* sysdeps/aarch64/fpu/s_fminf.c (__fminf): Replace asm statements
with __builtin_fminf.
* sysdeps/aarch64/fpu/s_frint.c: Delete file.
* sysdeps/aarch64/fpu/s_frintf.c: Delete file.
* sysdeps/aarch64/fpu/s_llrint.c (__llrint): Replace asm statements
with builtin_rint and conversion to int.
* sysdeps/aarch64/fpu/s_llrintf.c (__llrintf): Likewise.
* sysdeps/aarch64/fpu/s_llround.c (__llround): Replace asm statements
with builtin_llround.
* sysdeps/aarch64/fpu/s_llroundf.c (__llroundf): Likewise.
* sysdeps/aarch64/fpu/s_lrint.c (__lrint): Replace asm statements
with builtin_rint and conversion to long int.
* sysdeps/aarch64/fpu/s_lrintf.c (__lrintf): Likewise.
* sysdeps/aarch64/fpu/s_lround.c (__lround): Replace asm statements
with builtin_lround.
* sysdeps/aarch64/fpu/s_lroundf.c (__lroundf): Replace asm statements
with builtin_lroundf.
* sysdeps/aarch64/fpu/s_nearbyint.c (__nearbyint): Replace asm
statements with __builtin_nearbyint.
* sysdeps/aarch64/fpu/s_nearbyintf.c (__nearbyintf): Replace asm
statements with __builtin_nearbyintf.
* sysdeps/aarch64/fpu/s_rint.c (__rint): Replace asm statements
with __builtin_rint.
* sysdeps/aarch64/fpu/s_rintf.c (__rintf): Replace asm statements
with __builtin_rintf.
* sysdeps/aarch64/fpu/s_round.c (__round): Replace asm statements
with __builtin_round.
* sysdeps/aarch64/fpu/s_roundf.c (__roundf): Replace asm statements
with __builtin_roundf.
* sysdeps/aarch64/fpu/s_trunc.c (__trunc): Replace asm statements
with __builtin_trunc.
* sysdeps/aarch64/fpu/s_truncf.c (__truncf): Replace asm statements
with __builtin_truncf.
* sysdeps/aarch64/fpu/Makefile: Build e_sqrt[f].c with -fno-math-errno.
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This patch moves the AArch64 port to the main sysdeps hierarchy. The
move is essentially:
git mv ports/sysdeps/aarch64 sysdeps/aarch64
git mv ports/sysdeps/unix/sysv/linux/aarch64 sysdeps/unix/sysv/linux/aarch64
The README is updated and I've updated ChangeLog.aarch64 along the
lines of the ARM move. The AArch64 build has been tested to confirm
that there were no changes in objdump -dr output or the shared
objects.
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