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831bbd5527
This patch removes the SPARC-specific wrappers for sqrt and sqrtf.
These wrappers, by adding architecture-specific uses of _LIB_VERSION
and __kernel_standard, unnecessarily complicate cleanups of libm error
handling. They also do not serve a useful optimization purpose. GCC
knows about sqrt as a built-in function, and can generate direct calls
to a hardware square root instruction, either on its own, in the
-fno-math-errno case, or together with an inline check for the
argument being negative and a call to the out-of-line sqrt function
for error handling only in that case (and has been able to do so for a
long time). Thus in practice the wrapper will only be called only in
the case of negative arguments, which is not a case it is useful to
optimize for.
The removal of the wrappers also uncovers, and fixes, an old bug.
32-bit SPARC libm used (checked with glibc 2.8 binaries) to have a
sqrtl compat symbol, version GLIBC_2.0, for old binaries when sqrtl
was an alias of sqrt (I don't have pre-glibc-2.4 binaries for SPARC to
hand to check for the sqrtl symbol in those). This disappeared,
probably with:
commit
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| .. | ||
| bits | ||
| fpu | ||
| soft-fp | ||
| sparcv8 | ||
| sparcv9 | ||
| __longjmp.S | ||
| add_n.S | ||
| addmul_1.S | ||
| alloca.S | ||
| atomic-machine.h | ||
| backtrace.h | ||
| bsd-_setjmp.S | ||
| bsd-setjmp.S | ||
| bzero.c | ||
| divrem.m4 | ||
| dl-irel.h | ||
| dl-machine.h | ||
| dl-plt.h | ||
| dl-trampoline.S | ||
| dotmul.S | ||
| e_sqrt.c | ||
| ieee754.h | ||
| Implies | ||
| jmpbuf-offsets.h | ||
| jmpbuf-unwind.h | ||
| lll_timedlock_wait.c | ||
| lll_timedwait_tid.c | ||
| lowlevellock.c | ||
| lshift.S | ||
| Makefile | ||
| memchr.S | ||
| memcpy.S | ||
| memset.S | ||
| mul_1.S | ||
| pthread_barrier_wait.c | ||
| pthread_spin_lock.S | ||
| pthread_spin_trylock.S | ||
| pthreaddef.h | ||
| rem.S | ||
| rshift.S | ||
| sdiv.S | ||
| sem_post.c | ||
| sem_waitcommon.c | ||
| setjmp.S | ||
| stackguard-macros.h | ||
| start.S | ||
| stpcpy.S | ||
| strcat.S | ||
| strchr.S | ||
| strcmp.S | ||
| strcpy.S | ||
| strlen.S | ||
| strrchr.c | ||
| sub_n.S | ||
| submul_1.S | ||
| tls-macros.h | ||
| tst-audit.h | ||
| udiv.S | ||
| umul.S | ||
| urem.S | ||
| Versions | ||