| Commit message (Collapse) | Author | Age | Files | Lines |
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* sysdeps/powerpc/fpu/libm-test-ulps: Increase double-precision
sin, cos and sincos to 1 ULP.
Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
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Wrap symbol address run-time calculation into a macro and use it
throughout, replacing inline calculations.
There are a couple of variants, most of them different in a functionally
insignificant way. Most calculations are right following RESOLVE_MAP,
at which point either the map or the symbol returned can be checked for
validity as the macro sets either both or neither. In some places both
the symbol and the map has to be checked however.
My initial implementation therefore always checked both, however that
resulted in code larger by as much as 0.3%, as many places know from
elsewhere that no check is needed. I have decided the size growth was
unacceptable.
Having looked closer I realized that it's the map that is the culprit.
Therefore I have modified LOOKUP_VALUE_ADDRESS to accept an additional
boolean argument telling it to access the map without checking it for
validity. This in turn has brought quite nice results, with new code
actually being smaller for i686, and MIPS o32, n32 and little-endian n64
targets, unchanged in size for x86-64 and, unusually, marginally larger
for big-endian MIPS n64, as follows:
i686:
text data bss dec hex filename
152255 4052 192 156499 26353 ld-2.27.9000-base.so
152159 4052 192 156403 262f3 ld-2.27.9000-elf-symbol-value.so
MIPS/o32/el:
text data bss dec hex filename
142906 4396 260 147562 2406a ld-2.27.9000-base.so
142890 4396 260 147546 2405a ld-2.27.9000-elf-symbol-value.so
MIPS/n32/el:
text data bss dec hex filename
142267 4404 260 146931 23df3 ld-2.27.9000-base.so
142171 4404 260 146835 23d93 ld-2.27.9000-elf-symbol-value.so
MIPS/n64/el:
text data bss dec hex filename
149835 7376 408 157619 267b3 ld-2.27.9000-base.so
149787 7376 408 157571 26783 ld-2.27.9000-elf-symbol-value.so
MIPS/o32/eb:
text data bss dec hex filename
142870 4396 260 147526 24046 ld-2.27.9000-base.so
142854 4396 260 147510 24036 ld-2.27.9000-elf-symbol-value.so
MIPS/n32/eb:
text data bss dec hex filename
142019 4404 260 146683 23cfb ld-2.27.9000-base.so
141923 4404 260 146587 23c9b ld-2.27.9000-elf-symbol-value.so
MIPS/n64/eb:
text data bss dec hex filename
149763 7376 408 157547 2676b ld-2.27.9000-base.so
149779 7376 408 157563 2677b ld-2.27.9000-elf-symbol-value.so
x86-64:
text data bss dec hex filename
148462 6452 400 155314 25eb2 ld-2.27.9000-base.so
148462 6452 400 155314 25eb2 ld-2.27.9000-elf-symbol-value.so
[BZ #19818]
* sysdeps/generic/ldsodefs.h (LOOKUP_VALUE_ADDRESS): Add `set'
parameter.
(SYMBOL_ADDRESS): New macro.
[!ELF_FUNCTION_PTR_IS_SPECIAL] (DL_SYMBOL_ADDRESS): Use
SYMBOL_ADDRESS for symbol address calculation.
* elf/dl-runtime.c (_dl_fixup): Likewise.
(_dl_profile_fixup): Likewise.
* elf/dl-symaddr.c (_dl_symbol_address): Likewise.
* elf/rtld.c (dl_main): Likewise.
* sysdeps/aarch64/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/alpha/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/arm/dl-machine.h (elf_machine_rel): Likewise.
(elf_machine_rela): Likewise.
* sysdeps/hppa/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/hppa/dl-symaddr.c (_dl_symbol_address): Likewise.
* sysdeps/i386/dl-machine.h (elf_machine_rel): Likewise.
(elf_machine_rela): Likewise.
* sysdeps/ia64/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/m68k/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/microblaze/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/mips/dl-machine.h (ELF_MACHINE_BEFORE_RTLD_RELOC):
Likewise.
(elf_machine_reloc): Likewise.
(elf_machine_got_rel): Likewise.
* sysdeps/mips/dl-trampoline.c (__dl_runtime_resolve): Likewise.
* sysdeps/nios2/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_rela):
Likewise.
* sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_rela):
Likewise.
* sysdeps/riscv/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/s390/s390-32/dl-machine.h (elf_machine_rela):
Likewise.
* sysdeps/s390/s390-64/dl-machine.h (elf_machine_rela):
Likewise.
* sysdeps/sh/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_rela):
Likewise.
* sysdeps/sparc/sparc64/dl-machine.h (elf_machine_rela):
Likewise.
* sysdeps/tile/dl-machine.h (elf_machine_rela): Likewise.
* sysdeps/x86_64/dl-machine.h (elf_machine_rela): Likewise.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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The powerpc and sparc bits/mathinline.h include inlines of fdim and
fdimf. These are not restricted to -fno-math-errno, but do not set
errno, and wrongly use ordered <= comparisons instead of the required
islessequal comparisons (this latter issue is latent on powerpc
because GCC wrongly uses unordered comparison instructions for
operations that should use ordered comparison instructions).
Since we wish to avoid such header inlines anyway, leaving it to the
compiler to inline such standard functions under appropriate
conditions, this patch fixes those issues by removing the inlines in
question (and thus removing the sparc bits/mathinline.h header which
had no other inlines left in it). I've filed
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85003> for adding
correct fdim inlines to GCC, since the function is simple enough that
a correct inline is a perfectly reasonable architecture-independent
optimization with -fno-math-errno and in the absence of implicit
excess precision.
Tested with build-many-glibcs.py for all its powerpc and sparc
configurations.
[BZ #22987]
* sysdeps/powerpc/bits/mathinline.h (fdim): Remove inline
function.
(fdimf): Likewise.
* sysdeps/sparc/fpu/bits/mathinline.h: Remove file.
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This patch adds the narrowing subtract functions from TS 18661-1 to
glibc's libm: fsub, fsubl, dsubl, f32subf64, f32subf32x, f32xsubf64
for all configurations; f32subf64x, f32subf128, f64subf64x,
f64subf128, f32xsubf64x, f32xsubf128, f64xsubf128 for configurations
with _Float64x and _Float128; __nldbl_dsubl for ldbl-opt.
The changes are essentially the same as for the narrowing add
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 sub.
(libm-test-funcs-narrow): Likewise.
* math/Versions (GLIBC_2.28): Add narrowing subtract functions.
* math/bits/mathcalls-narrow.h (sub): Use __MATHCALL_NARROW.
* math/gen-auto-libm-tests.c (test_functions): Add sub.
* math/math-narrow.h (CHECK_NARROW_SUB): New macro.
(NARROW_SUB_ROUND_TO_ODD): Likewise.
(NARROW_SUB_TRIVIAL): Likewise.
* sysdeps/ieee754/float128/float128_private.h (__fsubl): New
macro.
(__dsubl): Likewise.
* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fsub and
dsub.
(CFLAGS-nldbl-dsub.c): New variable.
(CFLAGS-nldbl-fsub.c): Likewise.
* sysdeps/ieee754/ldbl-opt/Versions (GLIBC_2.28): Add
__nldbl_dsubl.
* sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl_dsubl): New
prototype.
* manual/arith.texi (Misc FP Arithmetic): Document fsub, fsubl,
dsubl, fMsubfN, fMsubfNx, fMxsubfN and fMxsubfNx.
* math/auto-libm-test-in: Add tests of sub.
* math/auto-libm-test-out-narrow-sub: New generated file.
* math/libm-test-narrow-sub.inc: New file.
* sysdeps/i386/fpu/s_f32xsubf64.c: Likewise.
* sysdeps/ieee754/dbl-64/s_f32xsubf64.c: Likewise.
* sysdeps/ieee754/dbl-64/s_fsub.c: Likewise.
* sysdeps/ieee754/float128/s_f32subf128.c: Likewise.
* sysdeps/ieee754/float128/s_f64subf128.c: Likewise.
* sysdeps/ieee754/float128/s_f64xsubf128.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_dsubl.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_f64xsubf128.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_fsubl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_dsubl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_fsubl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_dsubl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_fsubl.c: Likewise.
* sysdeps/ieee754/ldbl-opt/nldbl-dsub.c: Likewise.
* sysdeps/ieee754/ldbl-opt/nldbl-fsub.c: Likewise.
* sysdeps/ieee754/soft-fp/s_dsubl.c: Likewise.
* sysdeps/ieee754/soft-fp/s_fsub.c: Likewise.
* sysdeps/ieee754/soft-fp/s_fsubl.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/tile/tilegx32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx64/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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Remove the now unused target specific__ieee754_sqrt(f/l) inlines.
Also remove inlines of sqrt which are for really old GCC versions.
Removing these is desirable, under the general principle of leaving
such inlining to the compiler rather than trying to do it in installed
headers, especially when only very old compilers are affected.
Note that removing inlines for __ieee754_sqrt disables inlining in the
sqrt wrapper functions. Given the sqrt function will typically only be
called for negative arguments, it doesn't matter whether the inlining
happens or not.
* sysdeps/aarch64/fpu/math_private.h (__ieee754_sqrt): Remove.
(__ieee754_sqrtf): Remove.
* sysdeps/alpha/fpu/math_private.h (__ieee754_sqrt): Remove.
(__ieee754_sqrtf): Remove.
* sysdeps/generic/math-type-macros.h (M_SQRT): Use sqrt.
* sysdeps/m68k/m680x0/fpu/mathimpl.h (__ieee754_sqrt): Remove.
* sysdeps/powerpc/fpu/math_private.h (__ieee754_sqrt): Remove.
(__ieee754_sqrtf): Remove.
* sysdeps/s390/fpu/bits/mathinline.h: Remove file.
* sysdeps/sparc/fpu/bits/mathinline.h (sqrt) Remove.
(sqrtf): Remove.
(sqrtl): Remove.
(__ieee754_sqrt): Remove.
(__ieee754_sqrtf): Remove.
(__ieee754_sqrtl): Remove.
* sysdeps/m68k/m680x0/fpu/mathimpl.h (__ieee754_sqrt): Remove.
* sysdeps/x86/fpu/math_private.h (__ieee754_sqrt): Remove.
* sysdeps/x86_64/fpu/math_private.h (__ieee754_sqrt): Remove.
(__ieee754_sqrtf): Remove.
(__ieee754_sqrtl): Remove.
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Use sqrt(f/l) to enable inlining by GCC - if inlining doesn't happen,
the asm redirect ensures we will still call __ieee754_sqrt(f/l).
* sysdeps/ieee754/dbl-64/e_acosh.c (__ieee754_acosh): Use sqrt.
* sysdeps/ieee754/dbl-64/e_gamma_r.c (gamma_positive): Likewise.
* sysdeps/ieee754/dbl-64/e_hypot.c (__ieee754_hypot): Likewise.
* sysdeps/ieee754/dbl-64/e_j0.c (__ieee754_j0): Likewise.
* sysdeps/ieee754/dbl-64/e_j1.c (__ieee754_j1): Likewise.
* sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_jn): Likewise.
* sysdeps/ieee754/dbl-64/s_asinh.c (__asinh): Likewise.
* sysdeps/ieee754/dbl-64/wordsize-64/e_acosh.c (__ieee754_acosh): Likewise.
* sysdeps/ieee754/flt-32/e_acosf.c (__ieee754_acosf): Likewise.
* sysdeps/ieee754/flt-32/e_acoshf.c (__ieee754_acoshf): Likewise.
* sysdeps/ieee754/flt-32/e_asinf.c (__ieee754_asinf): Likewise.
* sysdeps/ieee754/flt-32/e_gammaf_r.c (gammaf_positive): Likewise.
* sysdeps/ieee754/flt-32/e_hypotf.c (__ieee754_hypotf): Likewise.
* sysdeps/ieee754/flt-32/e_j0f.c (__ieee754_j0f): Likewise.
* sysdeps/ieee754/flt-32/e_j1f.c (__ieee754_j1f): Likewise.
* sysdeps/ieee754/flt-32/e_powf.c (__ieee754_powf): Likewise.
* sysdeps/ieee754/flt-32/s_asinhf.c (__asinhf): Likewise.
* sysdeps/ieee754/ldbl-128/e_acoshl.c (__ieee754_acoshl): Use sqrtl.
* sysdeps/ieee754/ldbl-128/e_acosl.c (__ieee754_acosl): Likewise.
* sysdeps/ieee754/ldbl-128/e_asinl.c (__ieee754_asinl): Likewise.
* sysdeps/ieee754/ldbl-128/e_gammal_r.c (gammal_positive): Likewise.
* sysdeps/ieee754/ldbl-128/e_hypotl.c (__ieee754_hypotl): Likewise.
* sysdeps/ieee754/ldbl-128/e_j0l.c (__ieee754_j0l): Likewise.
* sysdeps/ieee754/ldbl-128/e_j1l.c (__ieee754_j1l): Likewise.
* sysdeps/ieee754/ldbl-128/e_jnl.c (__ieee754_jnl): Likewise.
* sysdeps/ieee754/ldbl-128/e_powl.c (__ieee754_powl): Likewise.
* sysdeps/ieee754/ldbl-128/s_asinhl.c (__ieee754_asinhl): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_acoshl.c (__ieee754_acoshl): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_acosl.c (__ieee754_acosl): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_asinl.c (__ieee754_asinl): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c (gammal_positive): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_hypotl.c (__ieee754_hypotl): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_j0l.c (__ieee754_j0l): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_j1l.c (__ieee754_j1l): Likewise
* sysdeps/ieee754/ldbl-128ibm/e_jnl.c (__ieee754_jnl): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_powl.c (__ieee754_powl): Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_asinhl.c (__ieee754_asinhl): Likewise.
* sysdeps/ieee754/ldbl-96/e_acoshl.c (__ieee754_acoshl): Use sqrtl.
* sysdeps/ieee754/ldbl-96/e_asinl.c (__ieee754_asinl): Likewise.
* sysdeps/ieee754/ldbl-96/e_gammal_r.c (gammal_positive): Likewise.
* sysdeps/ieee754/ldbl-96/e_hypotl.c (__ieee754_hypotl): Likewise.
* sysdeps/ieee754/ldbl-96/e_j0l.c (__ieee754_j0l): Likewise.
* sysdeps/ieee754/ldbl-96/e_j1l.c (__ieee754_j1l): Likewise.
* sysdeps/ieee754/ldbl-96/e_jnl.c (__ieee754_jnl): Likewise.
* sysdeps/ieee754/ldbl-96/s_asinhl.c (__ieee754_asinhl): Likewise.
* sysdeps/m68k/m680x0/fpu/e_pow.c (__ieee754_pow): Likewise.
* sysdeps/powerpc/fpu/e_hypot.c (__ieee754_hypot): Likewise.
* sysdeps/powerpc/fpu/e_hypotf.c (__ieee754_hypotf): Likewise.
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* elf/dl-support.c [!THREAD_GSCOPE_IN_TCB] (_dl_thread_gscope_count):
Define variable.
* sysdeps/generic/ldsodefs.h [!THREAD_GSCOPE_IN_TCB] (struct
rtld_global): Add _dl_thread_gscope_count member.
* sysdeps/mach/hurd/tls.h: Include <atomic.h>.
[!defined __ASSEMBLER__] (THREAD_GSCOPE_GLOBAL, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_WAIT): Define macros.
* sysdeps/generic/tls.h: Document THREAD_GSCOPE_IN_TCB.
* sysdeps/aarch64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/alpha/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/arm/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/hppa/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/i386/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/ia64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/m68k/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/microblaze/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/mips/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/nios2/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/powerpc/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/riscv/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/s390/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/sh/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/sparc/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/tile/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* sysdeps/x86_64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
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The sysdeps/ieee754/ldbl-opt version of math_ldbl_opt.h includes
math.h and math_private.h, despite not having any need for those
headers itself; the sysdeps/generic version doesn't. About 20 files
are relying on math_ldbl_opt.h to include math.h and/or math_private.h
for them, even though none of them necessarily used on a platform that
needs ldbl-opt support.
* sysdeps/ieee754/ldbl-opt/math_ldbl_opt.h: Don't include
math.h or math_private.h.
* sysdeps/alpha/fpu/s_isnan.c
* sysdeps/ieee754/ldbl-128ibm/s_ceill.c
* sysdeps/ieee754/ldbl-128ibm/s_floorl.c
* sysdeps/ieee754/ldbl-128ibm/s_llrintl.c
* sysdeps/ieee754/ldbl-128ibm/s_llroundl.c
* sysdeps/ieee754/ldbl-128ibm/s_lrintl.c
* sysdeps/ieee754/ldbl-128ibm/s_lroundl.c
* sysdeps/ieee754/ldbl-128ibm/s_rintl.c
* sysdeps/ieee754/ldbl-128ibm/s_roundl.c
* sysdeps/ieee754/ldbl-128ibm/s_truncl.c
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/e_hypot.c
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/e_hypotf.c:
* sysdeps/powerpc/powerpc64/fpu/multiarch/e_expf.c
* sysdeps/powerpc/powerpc64/fpu/multiarch/e_hypot.c
* sysdeps/powerpc/powerpc64/fpu/multiarch/e_hypotf.c:
Include math_private.h.
* sysdeps/ieee754/ldbl-64-128/s_finitel.c
* sysdeps/ieee754/ldbl-64-128/s_fpclassifyl.c
* sysdeps/ieee754/ldbl-64-128/s_isinfl.c
* sysdeps/ieee754/ldbl-64-128/s_isnanl.c
* sysdeps/ieee754/ldbl-64-128/s_signbitl.c
* sysdeps/powerpc/power7/fpu/s_logb.c:
Include math.h and math_private.h.
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Some SPE opcodes clashes with some recent PowerISA opcodes and
until recently gas did not complain about it. However binutils
recently changed it and now VLE configured gas does not support to
assembler some instruction that might class with VLE (HTM for
instance). It also does not help that glibc build hardware lock
elision support as default (regardless of assembler support).
Although runtime will not actually enables TLE on SPE hardware
(since kernel will not advertise it), I see little advantage on
adding HTM support on SPE built glibc. SPE uses an incompatible
ABI which does not allow share the same build with default
powerpc and HTM code slows down SPE without any benefict.
This patch fixes it by only building HTM when SPE configuration
is not used.
Checked with a powerpc-linux-gnuspe build. I also did some sniff
tests on a e500 hardware without any issue.
[BZ #22926]
* sysdeps/powerpc/powerpc32/sysdep.h (ABORT_TRANSACTION_IMPL): Define
empty for __SPE__.
* sysdeps/powerpc/sysdep.h (ABORT_TRANSACTION): Likewise.
* sysdeps/unix/sysv/linux/powerpc/elision-lock.c (__lll_lock_elision):
Do not build hardware transactional code for __SPE__.
* sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
(__lll_trylock_elision): Likewise.
* sysdeps/unix/sysv/linux/powerpc/elision-unlock.c
(__lll_unlock_elision): Likewise.
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Compiling the testsuite for powerpc (multi-arch configurations) with
-Os with GCC 7 fails with:
In file included from ifuncmod1.c:7:0,
from ifuncdep1.c:3:
../sysdeps/powerpc/ifunc-sel.h: In function 'ifunc_sel':
../sysdeps/powerpc/ifunc-sel.h:12:3: error: asm operand 2 probably doesn't match constraints [-Werror]
__asm__ ("mflr 12\n\t"
^~~~~~~
../sysdeps/powerpc/ifunc-sel.h:12:3: error: asm operand 3 probably doesn't match constraints [-Werror]
../sysdeps/powerpc/ifunc-sel.h:12:3: error: asm operand 4 probably doesn't match constraints [-Werror]
../sysdeps/powerpc/ifunc-sel.h:12:3: error: impossible constraint in 'asm'
The "i" constraints on function pointers require the function call to
be inlined so the compiler can see the constant function pointer
arguments passed to the asm. This patch marks the relevant functions
as always_inline accordingly.
Tested that this fixes the -Os testsuite build for
powerpc-linux-gnu-power4, powerpc64-linux-gnu, powerpc64le-linux-gnu
with build-many-glibcs.py.
* sysdeps/powerpc/ifunc-sel.h (ifunc_sel): Make always_inline.
(ifunc_one): Likewise.
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* sysdeps/powerpc/fpu/libm-test-ulps (pow): Increase double and
idouble to 1 ULP.
Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
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Remove the __slowexp code, so exp is no longer correctly rounded. The
result is computed to about 70 bits precision so the worst case ulp
error is about 0.500007 in nearest rounding mode.
* manual/probes.texi: Remove slowexp probes.
* math/Makefile: Remove slowexp.
* sysdeps/generic/math_private.h (__slowexp): Remove.
* sysdeps/ieee754/dbl-64/e_exp.c (__ieee754_exp): Remove __slowexp and
document error bounds.
* sysdeps/i386/fpu/slowexp.c: Remove.
* sysdeps/ia64/fpu/slowexp.c: Remove.
* sysdeps/ieee754/dbl-64/slowexp.c: Remove.
* sysdeps/ieee754/dbl-64/uexp.h (err_0): Remove.
* sysdeps/m68k/m680x0/fpu/slowexp.c: Remove.
* sysdeps/powerpc/power4/fpu/Makefile (CPPFLAGS-slowexp.c): Remove.
* sysdeps/x86_64/fpu/multiarch/Makefile: Remove slowexp-fma.
* sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__slowexp): Remove.
* sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__slowexp): Remove.
* sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__slowexp): Remove.
* sysdeps/x86_64/fpu/multiarch/slowexp-avx.c: Remove.
* sysdeps/x86_64/fpu/multiarch/slowexp-fma.c: Remove.
* sysdeps/x86_64/fpu/multiarch/slowexp-fma4.c: Remove.
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Remove the slow paths from pow. Like several other double precision math
functions, pow is exactly rounded. This is not required from math functions
and causes major overheads as it requires multiple fallbacks using higher
precision arithmetic if a result is close to 0.5ULP. Ridiculous slowdowns
of up to 100000x have been reported when the highest precision path triggers.
All GLIBC math tests pass on AArch64 and x64 (with ULP of pow set to 1).
The worst case error is ~0.506ULP. A simple test over a few hundred million
values shows pow is 10% faster on average. This fixes BZ #13932.
[BZ #13932]
* sysdeps/ieee754/dbl-64/uexp.h (err_1): Remove.
* benchtests/pow-inputs: Update comment for slow path cases.
* manual/probes.texi (slowpow_p10): Delete removed probe.
(slowpow_p10): Likewise.
* math/Makefile: Remove halfulp.c and slowpow.c.
* sysdeps/aarch64/libm-test-ulps: Set ULP of pow to 1.
* sysdeps/generic/math_private.h (__exp1): Remove error argument.
(__halfulp): Remove.
(__slowpow): Remove.
* sysdeps/i386/fpu/halfulp.c: Delete file.
* sysdeps/i386/fpu/slowpow.c: Likewise.
* sysdeps/ia64/fpu/halfulp.c: Likewise.
* sysdeps/ia64/fpu/slowpow.c: Likewise.
* sysdeps/ieee754/dbl-64/e_exp.c (__exp1): Remove error argument,
improve comments and add error analysis.
* sysdeps/ieee754/dbl-64/e_pow.c (__ieee754_pow): Add error analysis.
(power1): Remove function:
(log1): Remove error argument, add error analysis.
(my_log2): Remove function.
* sysdeps/ieee754/dbl-64/halfulp.c: Delete file.
* sysdeps/ieee754/dbl-64/slowpow.c: Likewise.
* sysdeps/m68k/m680x0/fpu/halfulp.c: Likewise.
* sysdeps/m68k/m680x0/fpu/slowpow.c: Likewise.
* sysdeps/powerpc/power4/fpu/Makefile: Remove CPPFLAGS-slowpow.c.
* sysdeps/x86_64/fpu/libm-test-ulps: Set ULP of pow to 1.
* sysdeps/x86_64/fpu/multiarch/Makefile: Remove slowpow-fma.c,
slowpow-fma4.c, halfulp-fma.c, halfulp-fma4.c.
* sysdeps/x86_64/fpu/multiarch/e_pow-fma.c (__slowpow): Remove define.
* sysdeps/x86_64/fpu/multiarch/e_pow-fma4.c (__slowpow): Likewise.
* sysdeps/x86_64/fpu/multiarch/halfulp-fma.c: Delete file.
* sysdeps/x86_64/fpu/multiarch/halfulp-fma4.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/slowpow-fma.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/slowpow-fma4.c: Likewise.
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This patch adds the narrowing add functions from TS 18661-1 to glibc's
libm: fadd, faddl, daddl, f32addf64, f32addf32x, f32xaddf64 for all
configurations; f32addf64x, f32addf128, f64addf64x, f64addf128,
f32xaddf64x, f32xaddf128, f64xaddf128 for configurations with
_Float64x and _Float128; __nldbl_daddl for ldbl-opt. As discussed for
the build infrastructure patch, tgmath.h support is deliberately
deferred, and FP_FAST_* macros are not applicable without optimized
function implementations.
Function implementations are added for all relevant pairs of formats
(including certain cases of a format and itself where more than one
type has that format). The main implementations use round-to-odd, or
a trivial computation in the case where both formats are the same or
where the wider format is IBM long double (in which case we don't
attempt to be correctly rounding). The sysdeps/ieee754/soft-fp
implementations use soft-fp, and are used automatically for
configurations without exceptions and rounding modes by virtue of
existing Implies files. As previously discussed, optimized versions
for particular architectures are possible, but not included.
i386 gets a special version of f32xaddf64 to avoid problems with
double rounding (similar to the existing fdim version), since this
function must round just once without an intermediate rounding to long
double. (No such special version is needed for any other function,
because the nontrivial functions use round-to-odd, which does the
intermediate computation with the rounding mode set to round-to-zero,
and double rounding is OK except in round-to-nearest mode, so is OK
for that intermediate round-to-zero computation.) mul and div will
need slightly different special versions for i386 (using round-to-odd
on long double instead of precision control) because of the
possibility of inexact intermediate results in the subnormal range for
double.
To reduce duplication among the different function implementations,
math-narrow.h gets macros CHECK_NARROW_ADD, NARROW_ADD_ROUND_TO_ODD
and NARROW_ADD_TRIVIAL.
In the trivial cases and for any architecture-specific optimized
implementations, the overhead of the errno setting might be
significant, but I think that's best handled through compiler built-in
functions rather than providing separate no-errno versions in glibc
(and likewise there are no __*_finite entry points for these function
provided, __*_finite effectively being no-errno versions at present in
most cases).
Tested for x86_64 and x86, with both GCC 6 and GCC 7. Tested for
mips64 (all three ABIs, both hard and soft float) and powerpc with GCC
7. Tested with build-many-glibcs.py with both GCC 6 and GCC 7.
* math/Makefile (libm-narrow-fns): Add add.
(libm-test-funcs-narrow): Likewise.
* math/Versions (GLIBC_2.28): Add narrowing add functions.
* math/bits/mathcalls-narrow.h (add): Use __MATHCALL_NARROW .
* math/gen-auto-libm-tests.c (test_functions): Add add.
* math/math-narrow.h (CHECK_NARROW_ADD): New macro.
(NARROW_ADD_ROUND_TO_ODD): Likewise.
(NARROW_ADD_TRIVIAL): Likewise.
* sysdeps/ieee754/float128/float128_private.h (__faddl): New
macro.
(__daddl): Likewise.
* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fadd and
dadd.
(CFLAGS-nldbl-dadd.c): New variable.
(CFLAGS-nldbl-fadd.c): Likewise.
* sysdeps/ieee754/ldbl-opt/Versions (GLIBC_2.28): Add
__nldbl_daddl.
* sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl_daddl): New
prototype.
* manual/arith.texi (Misc FP Arithmetic): Document fadd, faddl,
daddl, fMaddfN, fMaddfNx, fMxaddfN and fMxaddfNx.
* math/auto-libm-test-in: Add tests of add.
* math/auto-libm-test-out-narrow-add: New generated file.
* math/libm-test-narrow-add.inc: New file.
* sysdeps/i386/fpu/s_f32xaddf64.c: Likewise.
* sysdeps/ieee754/dbl-64/s_f32xaddf64.c: Likewise.
* sysdeps/ieee754/dbl-64/s_fadd.c: Likewise.
* sysdeps/ieee754/float128/s_f32addf128.c: Likewise.
* sysdeps/ieee754/float128/s_f64addf128.c: Likewise.
* sysdeps/ieee754/float128/s_f64xaddf128.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_daddl.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_f64xaddf128.c: Likewise.
* sysdeps/ieee754/ldbl-128/s_faddl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_daddl.c: Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_faddl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_daddl.c: Likewise.
* sysdeps/ieee754/ldbl-96/s_faddl.c: Likewise.
* sysdeps/ieee754/ldbl-opt/nldbl-dadd.c: Likewise.
* sysdeps/ieee754/ldbl-opt/nldbl-fadd.c: Likewise.
* sysdeps/ieee754/soft-fp/s_daddl.c: Likewise.
* sysdeps/ieee754/soft-fp/s_fadd.c: Likewise.
* sysdeps/ieee754/soft-fp/s_faddl.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/tile/tilegx32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/tile/tilegx64/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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Testing narrowing functions with build-many-glibcs.py showed up a
further testsuite fix needed to enable building such functions for
powerpc64le: tests test-<narrower-type>-float128-<function> (and
likewise for float64x) needed the same special handling for
powerpc64le as test-float128-* and test-float64x-*. This patch adds
that special handling.
Tested with build-many-glibcs.py for powerpc64le in conjunction with
the main patch adding narrowing add functions.
* sysdeps/powerpc/powerpc64le/Makefile [$(subdir) = math]
(f128-pairs): New variable.
[$(subdir) = math] ($(foreach suf,$(all-object-suffixes),$(foreach
pair,$(f128-pairs),$(objpfx)test-$(pair)%$(suf)))): Add -mfloat128
to CFLAGS.
[$(subdir) = math] ($(foreach pair,$(f128-pairs),test-$(pair)%)):
Also make tests add $(f128-loader-link) to gnulib-tests.
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Bug 19668 reports an unchecked malloc call in the test
sysdeps/powerpc/fpu/tst-setcontext-fpscr.c. This patch makes that
test use xmalloc. It does not otherwise move this test to the
support/ infrastructure or support/test-driver.c; the test has various
uses of exit and _exit on error cases, and uses atexit, and while I
think those things would all still work in the context of
test-driver.c, it's not an immediately obvious conversion the way it
would be for many tests that don't use test-driver.c.
Tested for powerpc.
[BZ #19668]
* sysdeps/powerpc/fpu/tst-setcontext-fpscr.c: Include
<support/support.h>. Do not include <malloc.h>.
(query_auxv): Use xmalloc instead of malloc.
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The tunables framework needs to execute syscall early in process
initialization, before the TCB is available for consumption. This
behavior conflicts with powerpc{|64|64le}'s lock elision code, that
checks the TCB before trying to abort transactions immediately before
executing a syscall.
This patch adds a powerpc-specific implementation of __access_noerrno
that does not abort transactions before the executing syscall.
Tested on powerpc{|64|64le}.
[BZ #22685]
* sysdeps/powerpc/powerpc32/sysdep.h (ABORT_TRANSACTION_IMPL): Renamed
from ABORT_TRANSACTION.
(ABORT_TRANSACTION): Redirect to ABORT_TRANSACTION_IMPL.
* sysdeps/powerpc/powerpc64/sysdep.h (ABORT_TRANSACTION,
ABORT_TRANSACTION_IMPL): Likewise.
* sysdeps/unix/sysv/linux/powerpc/not-errno.h: New file. Reuse
Linux code, but remove the code that aborts transactions.
Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
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This issue is similar to BZ #19235, where spurious exceptions are
created from adding 0.5 then converting to an integer.
The solution is based on Joseph's fix for BZ #19235.
[BZ #22697]
* sysdeps/powerpc/powerpc32/power4/fpu/s_llround.S (__llround):
Do not add 0.5 to integer or out-of-range arguments.
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For soft-float powerpc, fmaxmagl and fminmagl generate spurious
"invalid" exceptions for quiet NaN arguments. This is another case of
the problems with fabsl inline expansion via comparisons, and so is
fixed by building those functions with -fno-builtin-fabsl.
Tested for powerpc (soft-float).
[BZ #22691]
* sysdeps/powerpc/nofpu/Makefile [$(subdir) = math]
(CFLAGS-s_fmaxmagl.c): New variable.
[$(subdir) = math] (CFLAGS-s_fminmagl.c: Likewise.
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For soft-float powerpc, the remainderl function produces zero results
with the wrong sign for various inputs. This is another instance of
the problem with incorrect built-in fabsl expansion, so is fixed by
this patch using -fno-builtin-fabsl for this function.
Tested for powerpc (soft-float).
[BZ #22688]
* sysdeps/powerpc/nofpu/Makefile [$(subdir) = math]
(CFLAGS-e_remainderl.c): New variable.
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(bug 22687).
For soft-float powerpc, various _Complex long double functions
generate spurious "invalid" exceptions, even with a compiler with GCC
bug 64811 fixed.
The problem is GCC's built-in fabsl expansion. Various files are
already built with -fno-builtin-fabsl because in this case (IBM long
double, for soft-float or e500v1) a fallback fabsl expansion based on
comparisons is used, which can produce the wrong sign of a zero
result. Those comparisons can also produce spurious exceptions for
NaN arguments. Furthermore, __builtin_fpclassify implemently uses
__builtin_fabsl, and is unaffected by -fno-builtin-fabsl, and the
fpclassify macro uses __builtin_fpclassify in the absence of
-fsignaling-nans. Thus, this patch arranges for the problem files
using fpclassify to be built with -fsignaling-nans in this case, to
avoid spurious exceptions from fpclassify.
Tested for powerpc (soft-float).
[BZ #22687]
* sysdeps/powerpc/nofpu/Makefile (CFLAGS-s_cacosl.c): New
variable.
(CFLAGS-s_cacoshl.c): Likewise.
(CFLAGS-s_casinhl.c): Likewise.
(CFLAGS-s_catanl.c): Likewise.
(CFLAGS-s_catanhl.c): Likewise.
(CFLAGS-s_cexpl.c): Likewise.
(CFLAGS-s_ccoshl.c): Add -fsignaling-nans.
(CFLAGS-s_csinhl.c): Likewise.
(CFLAGS-s_clogl.c): Likewise.
(CFLAGS-s_clog10l.c): Likewise.
(CFLAGS-s_csinl.c): Likewise.
(CFLAGS-s_csqrtl.c): Likewise.
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The function _itoa_word() writes characters from the higher address to
the lower address, requiring the destination string to reserve that size
before calling it.
* sysdeps/powerpc/powerpc64/dl-machine.c (_dl_reloc_overflow):
Reserve 16 chars to reloc_addr before calling _itoa_word.
Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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* sysdeps/powerpc/nofpu/libm-test-ulps: Update.
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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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In C++ mode, __MATH_TG cannot be used for defining iseqsig, because
__MATH_TG relies on __builtin_types_compatible_p, which is a C-only
builtin. This is true when float128 is provided as an ABI-distinct type
from long double.
Moreover, the comparison macros from ISO C take two floating-point
arguments, which need not have the same type. Choosing what underlying
function to call requires evaluating the formats of the arguments, then
selecting which is wider. The macro __MATH_EVAL_FMT2 provides this
information, however, only the type of the macro expansion is relevant
(actually evaluating the expression would be incorrect).
This patch provides a C++ version of iseqsig, in which only the type of
__MATH_EVAL_FMT2 (__typeof or decltype) is used as a template parameter
for __iseqsig_type. This function calls the appropriate underlying
function.
Tested for powerpc64le and x86_64.
[BZ #22377]
* math/Makefile [C++] (tests): Add test for iseqsig.
* math/math.h [C++] (iseqsig): New implementation, which does
not rely on __MATH_TG/__builtin_types_compatible_p.
* math/test-math-iseqsig.cc: New file.
* sysdeps/powerpc/powerpc64le/Makefile
(CFLAGS-test-math-iseqsig.cc): New variable.
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Revert:
2017-12-19 Joseph Myers <joseph@codesourcery.com>
* sysdeps/x86_64/fpu/libm-test-ulps: Update.
2017-12-19 Patrick McGehearty <patrick.mcgehearty@oracle.com>
* sysdeps/ieee754/dbl-64/e_exp.c: Include <math-svid-compat.h> and
<errno.h>. Include "eexp.tbl".
(half): New constant.
(one): Likewise.
(__ieee754_exp): Rewrite.
(__slowexp): Remove prototype.
* sysdeps/ieee754/dbl-64/eexp.tbl: New file.
* sysdeps/ieee754/dbl-64/slowexp.c: Remove file.
* sysdeps/i386/fpu/slowexp.c: Likewise.
* sysdeps/ia64/fpu/slowexp.c: Likewise.
* sysdeps/m68k/m680x0/fpu/slowexp.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/slowexp-avx.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/slowexp-fma.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/slowexp-fma4.c: Likewise.
* sysdeps/generic/math_private.h (__slowexp): Remove prototype.
* sysdeps/ieee754/dbl-64/e_pow.c: Remove mention of slowexp.c in
comment.
* sysdeps/powerpc/power4/fpu/Makefile [$(subdir) = math]
(CPPFLAGS-slowexp.c): Remove variable.
* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
Remove slowexp-fma, slowexp-fma4 and slowexp-avx.
(CFLAGS-slowexp-fma.c): Remove variable.
(CFLAGS-slowexp-fma4.c): Likewise.
(CFLAGS-slowexp-avx.c): Likewise.
* sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__slowexp): Do not
define as macro.
* sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__slowexp): Likewise.
* sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__slowexp): Likewise.
* math/Makefile (type-double-routines): Remove slowexp.
* manual/probes.texi (slowexp_p6): Remove.
(slowexp_p32): Likewise.
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These changes will be active for all platforms that don't provide
their own exp() routines. They will also be active for ieee754
versions of ccos, ccosh, cosh, csin, csinh, sinh, exp10, gamma, and
erf.
Typical performance gains is typically around 5x when measured on
Sparc s7 for common values between exp(1) and exp(40).
Using the glibc perf tests on sparc,
sparc (nsec) x86 (nsec)
old new old new
max 17629 395 5173 144
min 399 54 15 13
mean 5317 200 1349 23
The extreme max times for the old (ieee754) exp are due to the
multiprecision computation in the old algorithm when the true value is
very near 0.5 ulp away from an value representable in double
precision. The new algorithm does not take special measures for those
cases. The current glibc exp perf tests overrepresent those values.
Informal testing suggests approximately one in 200 cases might
invoke the high cost computation. The performance advantage of the new
algorithm for other values is still large but not as large as indicated
by the chart above.
Glibc correctness tests for exp() and expf() were run. Within the
test suite 3 input values were found to cause 1 bit differences (ulp)
when "FE_TONEAREST" rounding mode is set. No differences in exp() were
seen for the tested values for the other rounding modes.
Typical example:
exp(-0x1.760cd2p+0) (-1.46113312244415283203125)
new code: 2.31973271630014299393707e-01 0x1.db14cd799387ap-3
old code: 2.31973271630014271638132e-01 0x1.db14cd7993879p-3
exp = 2.31973271630014285508337 (high precision)
Old delta: off by 0.49 ulp
New delta: off by 0.51 ulp
In addition, because ieee754_exp() is used by other routines, cexp()
showed test results with very small imaginary input values where the
imaginary portion of the result was off by 3 ulp when in upward
rounding mode, but not in the other rounding modes. For x86, tgamma
showed a few values where the ulp increased to 6 (max ulp for tgamma
is 5). Sparc tgamma did not show these failures. I presume the tgamma
differences are due to compiler optimization differences within the
gamma function.The gamma function is known to be difficult to compute
accurately.
* sysdeps/ieee754/dbl-64/e_exp.c: Include <math-svid-compat.h> and
<errno.h>. Include "eexp.tbl".
(half): New constant.
(one): Likewise.
(__ieee754_exp): Rewrite.
(__slowexp): Remove prototype.
* sysdeps/ieee754/dbl-64/eexp.tbl: New file.
* sysdeps/ieee754/dbl-64/slowexp.c: Remove file.
* sysdeps/i386/fpu/slowexp.c: Likewise.
* sysdeps/ia64/fpu/slowexp.c: Likewise.
* sysdeps/m68k/m680x0/fpu/slowexp.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/slowexp-avx.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/slowexp-fma.c: Likewise.
* sysdeps/x86_64/fpu/multiarch/slowexp-fma4.c: Likewise.
* sysdeps/generic/math_private.h (__slowexp): Remove prototype.
* sysdeps/ieee754/dbl-64/e_pow.c: Remove mention of slowexp.c in
comment.
* sysdeps/powerpc/power4/fpu/Makefile [$(subdir) = math]
(CPPFLAGS-slowexp.c): Remove variable.
* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
Remove slowexp-fma, slowexp-fma4 and slowexp-avx.
(CFLAGS-slowexp-fma.c): Remove variable.
(CFLAGS-slowexp-fma4.c): Likewise.
(CFLAGS-slowexp-avx.c): Likewise.
* sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__slowexp): Do not
define as macro.
* sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__slowexp): Likewise.
* sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__slowexp): Likewise.
* math/Makefile (type-double-routines): Remove slowexp.
* manual/probes.texi (slowexp_p6): Remove.
(slowexp_p32): Likewise.
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* sysdeps/powerpc/fpu/libm-test-ulps: Update.
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This patch makes use of vectors for aligned inputs. Improvements
upto 30% seen for larger aligned inputs.
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
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There is a configure option --without-fp that specifies that nofpu
sysdeps directories should be used instead of fpu directories.
For most glibc configurations, this option is of no use: either there
is no valid nofpu variant of that configuration, or there are no fpu
or nofpu sysdeps directories for that processor and so the option does
nothing. For a few configurations, if you are using a soft-float
compiler this option is required, and failing to use it generally
results in compilation errors from inline asm using unavailable
floating-point instructions.
We're moving away from --with-cpu to configuring glibc based on how
the compiler generates code, and it is natural to do so for
--without-fp as well; in most cases the soft-float and hard-float ABIs
are incompatible so you have no hope of building a working glibc with
an inappropriately configured compiler or libgcc.
This patch eliminates --without-fp, replacing it entirely by automatic
configuration based on the compiler. Configurations for which this is
relevant (coldfire / mips / powerpc32 / sh) define a variable
with_fp_cond in their preconfigure fragments (under the same
conditions under which those fragments do anything); this is a
preprocessor conditional which the toplevel configure script then uses
in a test to determine which sysdeps directories to use.
The config.make with-fp variable remains. It's used only by powerpc
(sysdeps/powerpc/powerpc32/Makefile) to add -mhard-float to various
flags variables. For powerpc, -mcpu= options can imply use of
soft-float. That could be an issue if you want to build for
e.g. 476fp, but are using --with-cpu=476 because there isn't a 476fp
sysdeps directory. If in future we eliminate --with-cpu and replace
it entirely by testing the compiler, it would be natural at that point
to eliminate that code as well (as the user should then just use a
compiler defaulting to 476fp and the 476 sysdeps directory would be
used automatically).
Tested for x86_64, and tested with build-many-glibcs.py that installed
shared libraries are unchanged by this patch.
* configure.ac (--with-fp): Remove configure option.
(with_fp_cond): New variable.
(libc_cv_with_fp): New configure test. Use this variable instead
of with_fp.
* configure: Regenerated.
* config.make.in (with-fp): Use @libc_cv_with_fp@.
* manual/install.texi (Configuring and compiling): Remove
--without-fp.
* INSTALL: Regenerated.
* sysdeps/m68k/preconfigure (with_fp_cond): Define for ColdFire.
* sysdeps/mips/preconfigure (with_fp_cond): Define.
* sysdeps/powerpc/preconfigure (with_fp_cond): Define for 32-bit.
* sysdeps/sh/preconfigure (with_fp_cond): Define.
* scripts/build-many-glibcs.py (Context.add_all_configs): Do not
use --without-fp to configure glibc.
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On POWER8, unaligned memory accesses to cached memory has little impact
on performance as opposed to its ancestors.
It is disabled by default and will only be available when the tunable
glibc.tune.cached_memopt is set to 1.
__memcpy_power8_cached __memcpy_power7
============================================================
max-size=4096: 33325.70 ( 12.65%) 38153.00
max-size=8192: 32878.20 ( 11.17%) 37012.30
max-size=16384: 33782.20 ( 11.61%) 38219.20
max-size=32768: 33296.20 ( 11.30%) 37538.30
max-size=65536: 33765.60 ( 10.53%) 37738.40
* manual/tunables.texi (Hardware Capability Tunables): Document
glibc.tune.cached_memopt.
* sysdeps/powerpc/cpu-features.c: New file.
* sysdeps/powerpc/cpu-features.h: New file.
* sysdeps/powerpc/dl-procinfo.c [!IS_IN(ldconfig)]: Add
_dl_powerpc_cpu_features.
* sysdeps/powerpc/dl-tunables.list: New file.
* sysdeps/powerpc/ldsodefs.h: Include cpu-features.h.
* sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h
(INIT_ARCH): Initialize use_aligned_memopt.
* sysdeps/powerpc/powerpc64/dl-machine.h [defined(SHARED &&
IS_IN(rtld))]: Restrict dl_platform_init availability and
initialize CPU features used by tunables.
* sysdeps/powerpc/powerpc64/multiarch/Makefile (sysdep_routines):
Add memcpy-power8-cached.
* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c: Add
__memcpy_power8_cached.
* sysdeps/powerpc/powerpc64/multiarch/memcpy.c: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memcpy-power8-cached.S:
New file.
Reviewed-by: Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
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This patch adds several new tunables to control the behavior of
elision on supported platforms[1]. Since elision now depends
on tunables, we should always *compile* with elision enabled,
and leave the code disabled, but available for runtime
selection. This gives us *much* better compile-time testing of
the existing code to avoid bit-rot[2].
Tested on ppc, ppc64, ppc64le, s390x and x86_64.
[1] This part of the patch was initially proposed by
Paul Murphy but was "staled" because the framework have changed
since the patch was originally proposed:
https://patchwork.sourceware.org/patch/10342/
[2] This part of the patch was inititally proposed as a RFC by
Carlos O'Donnell. Make sense to me integrate this on the patch:
https://sourceware.org/ml/libc-alpha/2017-05/msg00335.html
* elf/dl-tunables.list: Add elision parameters.
* manual/tunables.texi: Add entries about elision tunable.
* sysdeps/unix/sysv/linux/powerpc/elision-conf.c:
Add callback functions to dynamically enable/disable elision.
Add multiple callbacks functions to set elision parameters.
Deleted __libc_enable_secure check.
* sysdeps/unix/sysv/linux/s390/elision-conf.c: Likewise.
* sysdeps/unix/sysv/linux/x86/elision-conf.c: Likewise.
* configure: Regenerated.
* configure.ac: Option enable_lock_elision was deleted.
* config.h.in: ENABLE_LOCK_ELISION flag was deleted.
* config.make.in: Remove references to enable_lock_elision.
* manual/install.texi: Elision configure option was removed.
* INSTALL: Regenerated to remove enable_lock_elision.
* nptl/Makefile:
Disable elision so it can verify error case for destroying a mutex.
* sysdeps/powerpc/nptl/elide.h:
Cleanup ENABLE_LOCK_ELISION check.
Deleted macros for the case when ENABLE_LOCK_ELISION was not defined.
* sysdeps/s390/configure: Regenerated.
* sysdeps/s390/configure.ac: Remove references to enable_lock_elision..
* nptl/tst-mutex8.c:
Deleted all #ifndef ENABLE_LOCK_ELISION from the test.
* sysdeps/powerpc/powerpc32/sysdep.h:
Deleted all ENABLE_LOCK_ELISION checks.
* sysdeps/powerpc/powerpc64/sysdep.h: Likewise.
* sysdeps/powerpc/sysdep.h: Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes-arch.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/force-elision.h: Likewise.
* sysdeps/unix/sysv/linux/s390/elision-conf.h: Likewise.
* sysdeps/unix/sysv/linux/s390/force-elision.h: Likewise.
* sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
* sysdeps/unix/sysv/linux/s390/Makefile: Remove references to
enable-lock-elision.
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
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Continuing the preparation for additional _FloatN / _FloatNx function
aliases, this patch makes powerpc libm function implementations use
libm_alias_float to define function aliases.
Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged for all its hard-float powerpc configurations.
* sysdeps/powerpc/fpu/s_cosf.c: Include <libm-alias-float.h>.
(cosf): Define using libm_alias_float.
* sysdeps/powerpc/fpu/s_fabs.S: Include <libm-alias-float.h>.
(fabsf): Define using libm_alias_float.
* sysdeps/powerpc/fpu/s_fmaf.S: Include <libm-alias-float.h>.
(fmaf): Define using libm_alias_float.
* sysdeps/powerpc/fpu/s_rintf.c: Include <libm-alias-float.h>.
(rintf): Define using libm_alias_float.
* sysdeps/powerpc/fpu/s_sinf.c: Include <libm-alias-float.h>.
(sinf): Define using libm_alias_float.
* sysdeps/powerpc/power5+/fpu/s_modff.c: Include
<libm-alias-float.h>.
(modff): Define using libm_alias_float.
* sysdeps/powerpc/power7/fpu/s_logbf.c: Include
<libm-alias-float.h>.
(logbf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/fpu/s_ceilf.S: Include
<libm-alias-float.h>.
(ceilf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/fpu/s_copysign.S: Include
<libm-alias-float.h>.
(copysignf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/fpu/s_floorf.S: Include
<libm-alias-float.h>.
(floorf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/fpu/s_llrintf.c: Include
<libm-alias-float.h>.
(llrintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/fpu/s_llroundf.c: Include
<libm-alias-float.h>.
(llroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/fpu/s_lrint.S: Include
<libm-alias-float.h>.
(lrintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/fpu/s_lround.S: Include
<libm-alias-float.h>.
(lroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S: Include
<libm-alias-float.h>.
(nearbyintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/fpu/s_rintf.S: Include
<libm-alias-float.h>.
(rintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/fpu/s_roundf.S: Include
<libm-alias-float.h>.
(roundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/fpu/s_truncf.S: Include
<libm-alias-float.h>.
(truncf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_ceilf.c:
Include <libm-alias-float.h>.
(ceilf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysignf.c:
Include <libm-alias-float.h>.
(copysignf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_floorf.c:
Include <libm-alias-float.h>.
(floorf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_llrintf.c:
Include <libm-alias-float.h>.
(llrintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_llroundf.c:
Include <libm-alias-float.h>.
(llroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_logbf.c:
Include <libm-alias-float.h>.
(logbf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_lrintf.c:
Include <libm-alias-float.h>.
(lrintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_lroundf.c:
Include <libm-alias-float.h>.
(lroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_modff.c:
Include <libm-alias-float.h>.
(modff): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_roundf.c:
Include <libm-alias-float.h>.
(roundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_truncf.c:
Include <libm-alias-float.h>.
(truncf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/s_llrintf.S: Include
<libm-alias-float.h>.
(llrintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power4/fpu/s_llround.S: Include
<libm-alias-float.h>.
(llroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power5+/fpu/s_ceilf.S: Include
<libm-alias-float.h>.
(ceilf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power5+/fpu/s_floorf.S: Include
<libm-alias-float.h>.
(floorf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power5+/fpu/s_llround.S: Include
<libm-alias-float.h>.
(llroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power5+/fpu/s_lround.S: Include
<libm-alias-float.h>.
(lroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power5+/fpu/s_roundf.S: Include
<libm-alias-float.h>.
(roundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power5+/fpu/s_truncf.S: Include
<libm-alias-float.h>.
(truncf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S: Include
<libm-alias-float.h>.
(copysignf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power6/fpu/s_llrintf.S: Include
<libm-alias-float.h>.
(llrintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power6/fpu/s_llround.S: Include
<libm-alias-float.h>.
(llroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power6x/fpu/s_lrint.S: Include
<libm-alias-float.h>.
(lrintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc32/power6x/fpu/s_lround.S: Include
<libm-alias-float.h>.
(lroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_ceilf.c: Include
<libm-alias-float.h>.
(ceilf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysignf.c: Include
<libm-alias-float.h>.
(copysignf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_cosf.c: Include
<libm-alias-float.h>.
(cosf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_floorf.c: Include
<libm-alias-float.h>.
(floorf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrintf.c: Include
<libm-alias-float.h>.
(llrintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf.c: Include
<libm-alias-float.h>.
(llroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_logbf.c: Include
<libm-alias-float.h>.
(logbf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_modff.c: Include
<libm-alias-float.h>.
(modff): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_roundf.c: Include
<libm-alias-float.h>.
(roundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_sinf.c: Include
<libm-alias-float.h>.
(sinf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_truncf.c: Include
<libm-alias-float.h>.
(truncf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/s_ceilf.S: Include
<libm-alias-float.h>.
(ceilf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/s_copysign.S: Include
<libm-alias-float.h>.
(copysignf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/s_floorf.S: Include
<libm-alias-float.h>.
(floorf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/s_llrint.S: Include
<libm-alias-float.h>.
(llrintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/s_llroundf.S: Include
<libm-alias-float.h>.
(llroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/s_nearbyintf.S: Include
<libm-alias-float.h>.
(nearbyintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/s_rintf.S: Include
<libm-alias-float.h>.
(rintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/s_roundf.S: Include
<libm-alias-float.h>.
(roundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/fpu/s_truncf.S: Include
<libm-alias-float.h>.
(truncf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/power5+/fpu/s_ceilf.S: Include
<libm-alias-float.h>.
(ceilf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/power5+/fpu/s_floorf.S: Include
<libm-alias-float.h>.
(floorf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/power5+/fpu/s_llround.S: Include
<libm-alias-float.h>.
(llroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/power5+/fpu/s_roundf.S: Include
<libm-alias-float.h>.
(roundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/power5+/fpu/s_truncf.S: Include
<libm-alias-float.h>.
(truncf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S: Include
<libm-alias-float.h>.
(copysignf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/power6x/fpu/s_llrint.S: Include
<libm-alias-float.h>.
(llrintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/power6x/fpu/s_llround.S: Include
<libm-alias-float.h>.
(llroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/power8/fpu/s_cosf.S: Include
<libm-alias-float.h>.
(cosf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/power8/fpu/s_llrint.S: Include
<libm-alias-float.h>.
(llrintf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/power8/fpu/s_llround.S: Include
<libm-alias-float.h>.
(llroundf): Define using libm_alias_float.
* sysdeps/powerpc/powerpc64/power8/fpu/s_sinf.S: Include
<libm-alias-float.h>.
(sinf): Define using libm_alias_float.
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Continuing the preparation for additional _FloatN / _FloatNx function
aliases, this patch makes the remaining double powerpc functions use
libm_alias_double to define function aliases (with consequent removal
of the need for local compat symbol handling). Previous cleanups
avoid this patch changing installed stripped shared libraries for any
build-many-glibcs.py configuration (there are still some functions in
this patch for which the order of double and float aliases changes
within an individual source file, but in this case this doesn't result
in changes to the final library).
Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged for all its hard-float powerpc configurations.
* sysdeps/powerpc/power7/fpu/s_logb.c: Include
<libm-alias-double.h>.
(logb): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/fpu/s_copysign.S: Include
<libm-alias-double.h>.
(copysign): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/fpu/s_llrint.c: Include
<libm-alias-double.h>.
(llrint): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/fpu/s_llround.c: Include
<libm-alias-double.h>.
(llround): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/fpu/s_lrint.S: Include
<libm-alias-double.h>.
(lrint): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/fpu/s_lround.S: Include
<libm-alias-double.h>.
(lround): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign.c:
Include <libm-alias-double.h>.
(copysign): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_llrint.c:
Include <libm-alias-double.h>.
(llrint): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_llround.c:
Include <libm-alias-double.h>.
(llround): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_logb.c: Include
<libm-alias-double.h>.
(logb): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_lrint.c:
Include <libm-alias-double.h>.
(lrint): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_lround.c:
Include <libm-alias-double.h>.
(lround): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/s_llrint.S: Include
<libm-alias-double.h>.
(llrint): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/s_llround.S: Include
<libm-alias-double.h>.
(llround): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power5+/fpu/s_llround.S: Include
<libm-alias-double.h>.
(llround): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power5+/fpu/s_lround.S: Include
<libm-alias-double.h>.
(lround): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S: Include
<libm-alias-double.h>.
(copysign): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power6/fpu/s_llrint.S: Include
<libm-alias-double.h>.
(llrint): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power6/fpu/s_llround.S: Include
<libm-alias-double.h>.
(llround): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power6x/fpu/s_lrint.S: Include
<libm-alias-double.h>.
(lrint): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power6x/fpu/s_lround.S: Include
<libm-alias-double.h>.
(lround): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign.c: Include
<libm-alias-double.h>.
(copysign): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint.c: Include
<libm-alias-double.h>.
(llrint): Define using libm_alias_double.
(lrint): Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llround.c: Include
<libm-alias-double.h>.
(llround): Define using libm_alias_double.
(lround): Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_logb.c: Include
<libm-alias-double.h>.
(logb): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/s_copysign.S: Include
<libm-alias-double.h>.
(copysign): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/s_llrint.S: Include
<libm-alias-double.h>.
(llrint): Define using libm_alias_double.
(lrint): Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_llround.S: Include
<libm-alias-double.h>.
(llround): Define using libm_alias_double.
(lround): Likewise.
* sysdeps/powerpc/powerpc64/power5+/fpu/s_llround.S: Include
<libm-alias-double.h>.
(llround): Define using libm_alias_double.
(lround): Likewise.
* sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S: Include
<libm-alias-double.h>.
(copysign): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/power6x/fpu/s_llrint.S: Include
<libm-alias-double.h>.
(llrint): Define using libm_alias_double.
(lrint): Likewise.
* sysdeps/powerpc/powerpc64/power6x/fpu/s_llround.S: Include
<libm-alias-double.h>.
(llround): Define using libm_alias_double.
(lround): Likewise.
* sysdeps/powerpc/powerpc64/power8/fpu/s_llrint.S: Include
<libm-alias-double.h>.
(llrint): Define using libm_alias_double.
(lrint): Likewise.
* sysdeps/powerpc/powerpc64/power8/fpu/s_llround.S: Include
<libm-alias-double.h>.
(llround): Define using libm_alias_double.
(lround): Likewise.
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sysdeps/powerpc/powerpc64/fpu/multiarch/s_llround.c defines the
lroundl compat symbol, version GLIBC_2_1, twice, once based on llround
and once based on __lround. Those are aliases for each other (llround
weak, __lround strong), but defining it twice does not make sense.
This patch changes it to define the compat symbol once only, matching
how libm_alias_double defines it.
Tested with build-many-glibcs.py for its powerpc64 configurations.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llround.c
[LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)] (lroundl): Do not define
compat symbol based on llround.
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Some powerpc logb implementations define a compat symbol for logbl
based on logb, whereas libm_alias_double defines such a compat symbol
based on __logb instead. This difference (logb is weak, __logb isn't)
is enough to result in different installed stripped shared libraries.
The difference in the installed libraries isn't significant, but first
changing the compat_symbol calls helps make it possible to validate a
subsequent change to use libm_alias_double by comparison of libraries,
so this patch does such a preliminary change.
Tested with build-many-glibcs.py for all its hard-float powerpc
configurations.
* sysdeps/powerpc/power7/fpu/s_logb.c
[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Define as compat
symbol based on __logb, not on logb.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_logb.c
[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_logb.c
[LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)] (logbl): Likewise.
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Continuing the preparation for additional _FloatN / _FloatNx function
aliases, this patch various powerpc functions use libm_alias_double to
define function aliases (with consequent removal of the need for local
compat symbol handling). (The present patch excludes the changes to
some functions where such changes could result in differences in
installed stripped shared libraries because of changes to the exact
ordering or properties of symbols in individual .os files.)
Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged for all its hard-float powerpc configurations.
* sysdeps/powerpc/fpu/s_rint.c: Include <libm-alias-double.h>.
(rint): Define using libm_alias_double.
* sysdeps/powerpc/power5+/fpu/s_modf.c: Include
<libm-alias-double.h>.
(modf): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/fpu/s_ceil.S: Include
<libm-alias-double.h>.
(ceil): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/fpu/s_floor.S: Include
<libm-alias-double.h>.
(floor): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/fpu/s_nearbyint.S: Include
<libm-alias-double.h>.
(nearbyint): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/fpu/s_rint.S: Include
<libm-alias-double.h>.
(rint): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/fpu/s_round.S: Include
<libm-alias-double.h>.
(round): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/fpu/s_trunc.S: Include
<libm-alias-double.h>.
(trunc): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_ceil.c: Include
<libm-alias-double.h>.
(ceil): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_floor.c:
Include <libm-alias-double.h>.
(floor): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_modf.c: Include
<libm-alias-double.h>.
(modf): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_round.c:
Include <libm-alias-double.h>.
(round): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_trunc.c:
Include <libm-alias-double.h>.
(trunc): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power5+/fpu/s_ceil.S: Include
<libm-alias-double.h>.
(ceil): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power5+/fpu/s_floor.S: Include
<libm-alias-double.h>.
(floor): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power5+/fpu/s_round.S: Include
<libm-alias-double.h>.
(round): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/power5+/fpu/s_trunc.S: Include
<libm-alias-double.h>.
(trunc): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_ceil.c: Include
<libm-alias-double.h>.
(ceil): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_floor.c: Include
<libm-alias-double.h>.
(floor): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_modf.c: Include
<libm-alias-double.h>.
(modf): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_round.c: Include
<libm-alias-double.h>.
(round): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_trunc.c: Include
<libm-alias-double.h>.
(trunc): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/s_ceil.S: Include
<libm-alias-double.h>.
(ceil): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/s_floor.S: Include
<libm-alias-double.h>.
(floor): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/s_nearbyint.S: Include
<libm-alias-double.h>.
(nearbyint): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/s_rint.S: Include
<libm-alias-double.h>.
(rint): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/s_round.S: Include
<libm-alias-double.h>.
(round): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/fpu/s_trunc.S: Include
<libm-alias-double.h>.
(trunc): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/power5+/fpu/s_ceil.S: Include
<libm-alias-double.h>.
(ceil): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/power5+/fpu/s_floor.S: Include
<libm-alias-double.h>.
(floor): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/power5+/fpu/s_round.S: Include
<libm-alias-double.h>.
(round): Define using libm_alias_double.
* sysdeps/powerpc/powerpc64/power5+/fpu/s_trunc.S: Include
<libm-alias-double.h>.
(trunc): Define using libm_alias_double.
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Continuing the preparation for additional _FloatN / _FloatNx function
aliases, this patch makes powerpc fabs and fma use libm_alias_double
to define function aliases. This brings in automatic symbol
versioning compat handling, so the powerpc32 and powerpc64 wrappers
that added such handling to the generic sysdeps/powerpc/fpu versions
are removed as no longer required (there are no sysdeps directory
ordering issues that would necessitate keeping trivial wrappers
there).
Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged for all its hard-float powerpc configurations.
* sysdeps/powerpc/fpu/s_fabs.S: Include <libm-alias-double.h>.
(fabs): Define using libm_alias_double.
* sysdeps/powerpc/fpu/s_fma.S: Include <libm-alias-double.h>.
(fma): Define using libm_alias_double.
* sysdeps/powerpc/powerpc32/fpu/s_fabs.S: Remove file.
* sysdeps/powerpc/powerpc32/fpu/s_fma.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_fabs.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/s_fma.S: Likewise.
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On POWER9, cbrtf128 fails by 1 ULP.
* sysdeps/powerpc/fpu/libm-test-ulps: Regenerate.
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
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Continuing the preparation for additional _FloatN / _FloatNx function
aliases, this patch makes an e500 libm function implementation use
libm_alias_float to define function aliases.
Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged for its e500 configurations.
* sysdeps/powerpc/powerpc32/e500/nofpu/s_fabsf.S: Include
<libm-alias-float.h>.
(fabsf): Define using libm_alias_float.
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This patch continues filling out TS 18661-3 support by adding *f64x
function aliases on platforms with _Float64x support. (It so happens
the set of such platforms is exactly the same as the set of platforms
with _Float128 support, although on x86_64, x86 and ia32 the _Float64x
format is Intel extended rather than binary128.) The API provided
corresponds exactly to that provided for _Float128, mostly coming from
TS 18661-3. As these functions always alias those for another type
(long double, _Float128 or both), __* function names are not provided,
as in other cases of alias types.
Given the preparation done in previous patches, this one just enables
the feature via Makeconfig and bits/floatn.h, adds symbol versions,
and updates documentation and ABI baselines. The symbol versions are
present unconditionally as GLIBC_2.27 in the relevant Versions files,
as it's OK for those to specify versions for functions that may not be
present in some configurations; no additional complexity is needed
unless in future some configuration gains support for this type that
didn't have such support in 2.27. The Makeconfig additions for ia64
and x86 aren't strictly needed, as those configurations also get
float64x-alias-fcts definitions from
sysdeps/ieee754/float128/Makeconfig, but still seem appropriate given
that _Float64x is not _Float128 for those configurations.
A libm-test-ulps update for x86 is included. This is because
bits/mathinline.h does not have _Float64x support added and for two
functions the use of out-of-line functions results in increased ulps
(ifloat64x shares ulps with ildouble / ifloat128 as appropriate).
Given that we'd like generally to eliminate bits/mathinline.h
optimizations, preferring to have such optimizations in GCC instead,
it seems reasonable not to add such support there for new types. GCC
support for _FloatN / _FloatNx built-in functions is limited, but has
been improved in GCC 8, and at some point I hope the full set of libm
built-in functions in GCC, and other optimizations with
per-floating-type aspects, will be enabled for all _FloatN / _FloatNx
types.
Tested for x86_64 and x86, and with build-many-glibcs.py, with both
GCC 6 and GCC 7.
* sysdeps/ia64/Makeconfig (float64x-alias-fcts): New variable.
* sysdeps/ieee754/float128/Makeconfig (float64x-alias-fcts):
Likewise.
* sysdeps/ieee754/ldbl-128/Makeconfig (float64x-alias-fcts):
Likewise.
* sysdeps/x86/Makeconfig: New file.
* bits/floatn-common.h (__HAVE_FLOAT64X): Remove macro.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* bits/floatn.h (__HAVE_FLOAT64X): New macro.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/ia64/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/ieee754/ldbl-128/bits/floatn.h (__HAVE_FLOAT64X):
Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/mips/ieee754/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/powerpc/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* sysdeps/x86/bits/floatn.h (__HAVE_FLOAT64X): Likewise.
(__HAVE_FLOAT64X_LONG_DOUBLE): Likewise.
* manual/math.texi (Mathematics): Document support for _Float64x.
* math/Versions (GLIBC_2.27): Add _Float64x functions.
* stdlib/Versions (GLIBC_2.27): Likewise.
* wcsmbs/Versions (GLIBC_2.27): Likewise.
* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Update.
* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Likewise.
* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
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Supporting _Float64x on powerpc64le means that tests of that type need
to use -mfloat128 just like tests of _Float128. This patch adds the
necessary uses of that option.
Tested (compilation only) for powerpc64le with build-many-glibcs.py,
in conjunction with _Float64x support patches.
* sysdeps/powerpc/powerpc64le/Makefile ($(foreach
suf,$(all-object-suffixes),$(objpfx)test-float64x%$(suf))): Add
-mfloat128 to CFLAGS.
($(foreach
suf,$(all-object-suffixes),$(objpfx)test-ifloat64x%$(suf))):
Likewise.
(CFLAGS-libm-test-support-float64x.c): New variable.
($(objpfx)test-float64x% $(objpfx)test-ifloat64x%): Add
$(f128-loader-link) to gnulib-tests.
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Linux commit ID cba6ac4869e45cc93ac5497024d1d49576e82666 reserved a new
bit for a scenario where transactional memory is available, but the
suspended state is disabled.
* sysdeps/powerpc/bits/hwcap.h (PPC_FEATURE2_HTM_NO_SUSPEND): New
macro.
* sysdeps/powerpc/dl-procinfo.c (_dl_powerpc_cap_flags): Add
htm-no-suspend.
Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
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Further _FloatN / _FloatNx type alias support will involve making
architecture-specific .S files use the common macros for libm function
aliases. Making them use those macros will also serve to simplify
existing code for aliases / symbol versions in various cases, similar
to such simplifications for ldbl-opt code.
The libm-alias-*.h files sometimes need to include <bits/floatn.h> to
determine which aliases they should define. At present, this does not
work for inclusion from .S files because <bits/floatn.h> can define
typedefs for old compilers. This patch changes all the
<bits/floatn.h> and <bits/floatn-common.h> headers to include
__ASSEMBLER__ conditionals. Those conditionals disable everything
related to C syntax in the __ASSEMBLER__ case, not just the problem
typedefs, as that seemed cleanest. The __HAVE_* definitions remain in
the __ASSEMBLER__ case, as those provide information that is required
to define the correct set of aliases.
Tested with build-many-glibcs.py for a representative set of
configurations (x86_64-linux-gnu i686-linux-gnu ia64-linux-gnu
powerpc64le-linux-gnu mips64-linux-gnu-n64 sparc64-linux-gnu) with GCC
6. Also tested with GCC 6 for i686-linux-gnu in conjunction with
changes to use alias macros in .S files.
* bits/floatn-common.h [!__ASSEMBLER]: Disable everything related
to C syntax instead of availability and properties of types.
* bits/floatn.h [!__ASSEMBLER]: Likewise.
* sysdeps/ia64/bits/floatn.h [!__ASSEMBLER]: Likewise.
* sysdeps/ieee754/ldbl-128/bits/floatn.h [!__ASSEMBLER]: Likewise.
* sysdeps/mips/ieee754/bits/floatn.h [!__ASSEMBLER]: Likewise.
* sysdeps/powerpc/bits/floatn.h [!__ASSEMBLER]: Likewise.
* sysdeps/x86/bits/floatn.h [!__ASSEMBLER]: Likewise.
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This patch adds two new internal defines to set the internal
pthread_mutex_t layout required by the supported ABIS:
1. __PTHREAD_MUTEX_NUSERS_AFTER_KIND which control whether to define
__nusers fields before or after __kind. The preferred value for
is 0 for new ports and it sets __nusers before __kind.
2. __PTHREAD_MUTEX_USE_UNION which control whether internal __spins and
__list members will be place inside an union for linuxthreads
compatibility. The preferred value is 0 for ports and it sets
to not use an union to define both fields.
It fixes the wrong offsets value for __kind value on x86_64-linux-gnu-x32.
Checked with a make check run-built-tests=no on all afected ABIs.
[BZ #22298]
* nptl/allocatestack.c (allocate_stack): Check if
__PTHREAD_MUTEX_HAVE_PREV is non-zero, instead if
__PTHREAD_MUTEX_HAVE_PREV is defined.
* nptl/descr.h (pthread): Likewise.
* nptl/nptl-init.c (__pthread_initialize_minimal_internal):
Likewise.
* nptl/pthread_create.c (START_THREAD_DEFN): Likewise.
* sysdeps/nptl/fork.c (__libc_fork): Likewise.
* sysdeps/nptl/pthread.h (PTHREAD_MUTEX_INITIALIZER): Likewise.
* sysdeps/nptl/bits/thread-shared-types.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): New
defines.
(__pthread_internal_list): Check __PTHREAD_MUTEX_USE_UNION instead
of __WORDSIZE for internal layout.
(__pthread_mutex_s): Check __PTHREAD_MUTEX_NUSERS_AFTER_KIND instead
of __WORDSIZE for internal __nusers layout and __PTHREAD_MUTEX_USE_UNION
instead of __WORDSIZE whether to use an union for __spins and __list
fields.
(__PTHREAD_MUTEX_HAVE_PREV): Define also for __PTHREAD_MUTEX_USE_UNION
case.
* sysdeps/aarch64/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): New
defines.
* sysdeps/alpha/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/arm/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/hppa/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/ia64/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/m68k/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/microblaze/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/mips/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/nios2/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/powerpc/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/sh/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/sparc/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/tile/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
* sysdeps/x86/nptl/bits/pthreadtypes-arch.h
(__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION):
Likewise.
Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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This patch adds a new build test to check for internal fields
offsets for user visible internal field. Although currently
the only field which is statically initialized to a non zero value
is pthread_mutex_t.__data.__kind value, the tests also check the
offset of __kind, __spins, __elision (if supported), and __list
internal member. A internal header (pthread-offset.h) is added
to each major ABI with the reference value.
Checked on x86_64-linux-gnu and with a build check for all affected
ABIs (aarch64-linux-gnu, alpha-linux-gnu, arm-linux-gnueabihf,
hppa-linux-gnu, i686-linux-gnu, ia64-linux-gnu, m68k-linux-gnu,
microblaze-linux-gnu, mips64-linux-gnu, mips64-n32-linux-gnu,
mips-linux-gnu, powerpc64le-linux-gnu, powerpc-linux-gnu,
s390-linux-gnu, s390x-linux-gnu, sh4-linux-gnu, sparc64-linux-gnu,
sparcv9-linux-gnu, tilegx-linux-gnu, tilegx-linux-gnu-x32,
tilepro-linux-gnu, x86_64-linux-gnu, and x86_64-linux-x32).
* nptl/pthreadP.h (ASSERT_PTHREAD_STRING,
ASSERT_PTHREAD_INTERNAL_OFFSET): New macro.
* nptl/pthread_mutex_init.c (__pthread_mutex_init): Add build time
checks for internal pthread_mutex_t offsets.
* sysdeps/aarch64/nptl/pthread-offsets.h
(__PTHREAD_MUTEX_NUSERS_OFFSET, __PTHREAD_MUTEX_KIND_OFFSET,
__PTHREAD_MUTEX_SPINS_OFFSET, __PTHREAD_MUTEX_ELISION_OFFSET,
__PTHREAD_MUTEX_LIST_OFFSET): New macro.
* sysdeps/alpha/nptl/pthread-offsets.h: Likewise.
* sysdeps/arm/nptl/pthread-offsets.h: Likewise.
* sysdeps/hppa/nptl/pthread-offsets.h: Likewise.
* sysdeps/i386/nptl/pthread-offsets.h: Likewise.
* sysdeps/ia64/nptl/pthread-offsets.h: Likewise.
* sysdeps/m68k/nptl/pthread-offsets.h: Likewise.
* sysdeps/microblaze/nptl/pthread-offsets.h: Likewise.
* sysdeps/mips/nptl/pthread-offsets.h: Likewise.
* sysdeps/nios2/nptl/pthread-offsets.h: Likewise.
* sysdeps/powerpc/nptl/pthread-offsets.h: Likewise.
* sysdeps/s390/nptl/pthread-offsets.h: Likewise.
* sysdeps/sh/nptl/pthread-offsets.h: Likewise.
* sysdeps/sparc/nptl/pthread-offsets.h: Likewise.
* sysdeps/tile/nptl/pthread-offsets.h: Likewise.
* sysdeps/x86_64/nptl/pthread-offsets.h: Likewise.
Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Update strcasestr-power8 to use power8 version of strnlen for
calculating length.
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
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The powerpc bits/floatn.h declares _Float128 support to be present
when the compiler supports it for powerpc64le. However, in the case
where -mlong-double-64 is used, __MATH_TG does not actually support
_Float128; it only supports _Float128 in the distinct-long-double
case.
This shows up as a build failure when building glibc mainline with GCC
mainline, given the recently added sanity check in math.h for
configurations supported by __MATH_TG, as the compat code for
-mlong-double-64 fails to build. However, the bug was logically
present before that change (including in 2.26), just less visible.
This patch fixes the build failure by declaring _Float128 to be
unsupported in that case. (Of course this can't actually stop users
calling the type-generic macros with _Float128 arguments with
-mlong-double-64, just as they could be called with other unsupported
types on other platforms, but perhaps makes it less likely by making
all the type-specific _Float128 interfaces invisible in that case.)
Tested compilation for powerpc64le with build-many-glibcs.py.
[BZ #22402]
* sysdeps/powerpc/bits/floatn.h: Include <bits/long-double.h>.
[__NO_LONG_DOUBLE_MATH] (__HAVE_FLOAT128): Define to 0.
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When the .c/.S file neither uses nor modifies macros defined in
sysdep.h there is no point to #include it. The same goes for
math_ldbl_opt.h except that it includes shlib-compat.h, and if
compat_symbol is redefined we need to include shlib-compat.h first.
* sysdeps/powerpc/powerpc64/fpu/multiarch/e_expf-power8.S: Don't
include sysdep.h.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_ceilf-power5+.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_ceilf-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_cosf-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_cosf-ppc64.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_finite-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_floor-power5+.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_floor-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_roundf-power5+.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_roundf-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_sinf-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_sinf-ppc64.c: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_truncf-power5+.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_truncf-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memchr-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memchr-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memcmp-power4.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memcmp-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memcmp-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memcpy-a2.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memcpy-cell.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memcpy-power4.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memcpy-power6.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memcpy-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memmove-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/mempcpy-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memrchr-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memrchr-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memset-power4.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memset-power6.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memset-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/memset-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/rawmemchr-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/stpcpy-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/stpncpy-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/stpncpy-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strcasecmp-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strcasecmp-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strcasecmp_l-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strcasestr-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strchr-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strchr-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strchr-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strchrnul-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strchrnul-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strcmp-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strcmp-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strcmp-power9.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strcmp-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strcpy-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strcspn-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strlen-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strlen-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strncase-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strncmp-power4.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strncmp-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strncmp-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strncmp-power9.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strncmp-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strncpy-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strncpy-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strnlen-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strnlen-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strrchr-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strrchr-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strspn-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strstr-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_floorf-ppc64.S: Don't
include sysdep.h and math_ldbl_opt.h.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_ceil-power5+.S: Don't
include sysdep.h and math_ldbl_opt.h. Include shlib-compat.h.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_ceil-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-power6.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_floorf-power5+.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinf-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_isinf-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnan-power5.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnan-power6.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnan-power6x.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnan-power7.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnan-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_isnan-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint-power6x.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llrint-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llround-power5+.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llround-power6x.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llround-power8.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llround-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_llroundf-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_round-power5+.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_round-ppc64.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_trunc-power5+.S: Likewise.
* sysdeps/powerpc/powerpc64/fpu/multiarch/s_trunc-ppc64.S: Likewise.
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This is another one where we'll be wanting the base symbols for
powerpc64le rather than just a power7 variant.
* sysdeps/powerpc/powerpc64/multiarch/strncase_l-power7.c: Include
string/strncase_l.c, not string/strncase.c.
(USE_IN_EXTENDED_LOCALE_MODEL): Don't define.
(libc_hidden_def): Redefine.
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