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Better workaround for aliases of *_finite symbols in vector math library.

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Old workaround based on assembly aliases can lead to link fail (bug 19058).
This patch makes workaround in another way to avoid it.

    [BZ #19058]
    * math/Makefile ($(inst_libdir)/libm.so): Added libmvec_nonshared.a
    to AS_NEEDED.
    * sysdeps/x86/fpu/bits/math-vector.h: Removed code with old workaround.
    * sysdeps/x86_64/fpu/Makefile (libmvec-support,
    libmvec-static-only-routines): Added new file.
    * sysdeps/x86_64/fpu/svml_finite_alias.S: New file.
This commit is contained in:
Andrew Senkevich
2015-11-27 16:22:26 +03:00
parent 4d952856e3
commit 977a30801f
5 changed files with 74 additions and 31 deletions
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29
sysdeps/x86/fpu/bits/math-vector.h
View File

@ -53,34 +53,5 @@
# undef __DECL_SIMD_powf
# define __DECL_SIMD_powf __DECL_SIMD_x86_64
/* Workaround to exclude unnecessary symbol aliases in libmvec
while GCC creates the vector names based on scalar asm name.
Corresponding discussion started at
<https://gcc.gnu.org/ml/gcc/2015-06/msg00173.html>. */
__asm__ ("_ZGVbN2v___log_finite = _ZGVbN2v_log");
__asm__ ("_ZGVcN4v___log_finite = _ZGVcN4v_log");
__asm__ ("_ZGVdN4v___log_finite = _ZGVdN4v_log");
__asm__ ("_ZGVeN8v___log_finite = _ZGVeN8v_log");
__asm__ ("_ZGVbN4v___logf_finite = _ZGVbN4v_logf");
__asm__ ("_ZGVcN8v___logf_finite = _ZGVcN8v_logf");
__asm__ ("_ZGVdN8v___logf_finite = _ZGVdN8v_logf");
__asm__ ("_ZGVeN16v___logf_finite = _ZGVeN16v_logf");
__asm__ ("_ZGVbN2v___exp_finite = _ZGVbN2v_exp");
__asm__ ("_ZGVcN4v___exp_finite = _ZGVcN4v_exp");
__asm__ ("_ZGVdN4v___exp_finite = _ZGVdN4v_exp");
__asm__ ("_ZGVeN8v___exp_finite = _ZGVeN8v_exp");
__asm__ ("_ZGVbN4v___expf_finite = _ZGVbN4v_expf");
__asm__ ("_ZGVcN8v___expf_finite = _ZGVcN8v_expf");
__asm__ ("_ZGVdN8v___expf_finite = _ZGVdN8v_expf");
__asm__ ("_ZGVeN16v___expf_finite = _ZGVeN16v_expf");
__asm__ ("_ZGVbN2vv___pow_finite = _ZGVbN2vv_pow");
__asm__ ("_ZGVcN4vv___pow_finite = _ZGVcN4vv_pow");
__asm__ ("_ZGVdN4vv___pow_finite = _ZGVdN4vv_pow");
__asm__ ("_ZGVeN8vv___pow_finite = _ZGVeN8vv_pow");
__asm__ ("_ZGVbN4vv___powf_finite = _ZGVbN4vv_powf");
__asm__ ("_ZGVcN8vv___powf_finite = _ZGVcN8vv_powf");
__asm__ ("_ZGVdN8vv___powf_finite = _ZGVdN8vv_powf");
__asm__ ("_ZGVeN16vv___powf_finite = _ZGVeN16vv_powf");
# endif
#endif