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8df4e219e4
built-ins when available. Since going through the PLT is expensive for these small functions,
inlining results in major speedups (about 7x on Cortex-A57 for isinf). The GCC built-ins are not
correct if signalling NaN support is required, and thus are turned off in that case (see GCC bug
66462). The test-snan.c tests sNaNs and so must be explicitly built with -fsignaling-nans.
2015-09-18 Wilco Dijkstra <wdijkstr@arm.com>
[BZ #15367]
[BZ #17441]
* math/Makefile: Build test-snan.c with -fsignaling-nans.
* math/math.h (fpclassify): Use __builtin_fpclassify when
available. (signbit): Use __builtin_signbit(f/l).
(isfinite): Use__builtin_isfinite. (isnormal): Use
__builtin_isnormal. (isnan): Use __builtin_isnan.
(isinf): Use __builtin_isinf_sign.
274 lines
11 KiB
Makefile
274 lines
11 KiB
Makefile
# Copyright (C) 1996-2015 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <http://www.gnu.org/licenses/>.
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# Makefile for the math library.
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subdir := math
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include ../Makeconfig
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# Installed header files.
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headers := math.h bits/mathcalls.h bits/mathinline.h bits/huge_val.h \
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bits/huge_valf.h bits/huge_vall.h bits/inf.h bits/nan.h \
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fpu_control.h complex.h bits/cmathcalls.h fenv.h \
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bits/fenv.h bits/fenvinline.h bits/mathdef.h tgmath.h \
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bits/math-finite.h bits/math-vector.h \
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bits/libm-simd-decl-stubs.h
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# FPU support code.
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aux := setfpucw fpu_control
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# Build the -lm library.
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extra-libs := libm
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extra-libs-others = $(extra-libs)
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libm-support = s_lib_version s_matherr s_signgam \
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fclrexcpt fgetexcptflg fraiseexcpt fsetexcptflg \
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ftestexcept fegetround fesetround fegetenv feholdexcpt \
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fesetenv feupdateenv t_exp fedisblxcpt feenablxcpt \
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fegetexcept
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libm-calls = e_acos e_acosh e_asin e_atan2 e_atanh e_cosh e_exp e_fmod \
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e_hypot e_j0 e_j1 e_jn e_lgamma_r e_log e_log10 e_pow \
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e_rem_pio2 e_remainder e_scalb e_sinh e_sqrt e_gamma_r \
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e_ilogb \
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k_cos k_rem_pio2 k_sin k_tan s_asinh s_atan s_cbrt \
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s_ceil s_cos s_erf s_expm1 s_fabs \
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s_floor s_log1p w_log1p s_logb \
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s_nextafter s_nexttoward s_rint s_scalbln w_scalbln \
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s_significand s_sin s_tan s_tanh w_acos w_acosh w_asin \
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w_atan2 w_atanh w_cosh w_drem w_exp w_exp2 w_exp10 w_fmod \
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w_tgamma w_hypot w_j0 w_j1 w_jn w_lgamma w_lgamma_r \
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w_log w_log10 w_pow w_remainder w_scalb w_sinh w_sqrt \
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w_ilogb \
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s_fpclassify s_fmax s_fmin s_fdim s_nan s_trunc \
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s_remquo e_log2 e_exp2 s_round s_nearbyint s_sincos \
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conj cimag creal cabs carg s_cexp s_csinh s_ccosh s_clog \
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s_catan s_casin s_ccos s_csin s_ctan s_ctanh s_cacos \
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s_casinh s_cacosh s_catanh s_csqrt s_cpow s_cproj s_clog10 \
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s_fma s_lrint s_llrint s_lround s_llround e_exp10 w_log2 \
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s_isinf_ns s_issignaling $(calls:s_%=m_%) x2y2m1 k_casinh \
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gamma_product k_standard lgamma_neg lgamma_product
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dbl-only-routines := branred doasin dosincos halfulp mpa mpatan2 \
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mpatan mpexp mplog mpsqrt mptan sincos32 slowexp \
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slowpow sincostab
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libm-routines = $(strip $(libm-support) $(libm-calls) \
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$(patsubst %_rf,%f_r,$(libm-calls:=f)) \
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$(long-m-$(long-double-fcts))) \
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$(dbl-only-routines)
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long-m-routines = $(patsubst %_rl,%l_r,$(libm-calls:=l))
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long-m-support = t_sincosl k_sincosl
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long-m-yes = $(long-m-routines) $(long-m-support)
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# These functions are in libc instead of libm because __printf_fp
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# calls them, so any program using printf will need them linked in,
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# and we don't want to have to link every program with -lm.
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# In libm-calls (above), list m_foo in place of s_foo for any
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# routine that should be compiled separately for its libc and libm versions.
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calls = s_isinf s_isnan s_finite s_copysign s_modf s_scalbn s_frexp s_ldexp \
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s_signbit
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generated += $(foreach s,.c .S l.c l.S f.c f.S,$(calls:s_%=m_%$s))
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routines = $(calls) $(calls:=f) $(long-c-$(long-double-fcts))
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long-c-yes = $(calls:=l)
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ifeq ($(build-mathvec),yes)
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# We need to install libm.so as linker script
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# for more comfortable use of vector math library.
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install-lib-ldscripts := libm.so
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install_subdir: $(inst_libdir)/libm.so
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$(inst_libdir)/libm.so: $(common-objpfx)format.lds \
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$(libm) \
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$(libmvec) \
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$(+force)
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(echo '/* GNU ld script'; echo '*/';\
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cat $<; \
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echo 'GROUP ( $(slibdir)/libm.so$(libm.so-version) ' \
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'AS_NEEDED ( $(slibdir)/libmvec.so$(libmvec.so-version) ) )' \
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) > $@
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endif
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# Rules for the test suite.
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tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
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test-misc test-fpucw test-fpucw-ieee tst-definitions test-tgmath \
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test-tgmath-ret bug-nextafter bug-nexttoward bug-tgmath1 \
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test-tgmath-int test-tgmath2 test-powl tst-CMPLX tst-CMPLX2 test-snan \
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test-fenv-tls test-fenv-preserve test-fenv-return test-fenvinline \
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$(tests-static)
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tests-static = test-fpucw-static test-fpucw-ieee-static
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# We do the `long double' tests only if this data type is available and
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# distinct from `double'.
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test-longdouble-yes = test-ldouble test-ildoubl
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ifneq (no,$(PERL))
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libm-vec-tests = $(addprefix test-,$(libmvec-tests))
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libm-tests = test-float test-double $(test-longdouble-$(long-double-fcts)) \
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test-ifloat test-idouble $(libm-vec-tests)
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libm-tests.o = $(addsuffix .o,$(libm-tests))
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tests += $(libm-tests)
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libm-tests-generated = libm-test-ulps.h libm-have-vector-test.h libm-test.c
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generated += $(libm-tests-generated) libm-test.stmp
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# This is needed for dependencies
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before-compile += $(objpfx)libm-test.c
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ulps-file = $(firstword $(wildcard $(sysdirs:%=%/libm-test-ulps)))
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$(addprefix $(objpfx), $(libm-tests-generated)): $(objpfx)libm-test.stmp
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$(objpfx)libm-test.stmp: $(ulps-file) libm-test.inc gen-libm-test.pl \
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gen-libm-have-vector-test.sh auto-libm-test-out
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$(make-target-directory)
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$(PERL) gen-libm-test.pl -u $< -o "$(objpfx)"
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$(SHELL) gen-libm-have-vector-test.sh > $(objpfx)libm-have-vector-test.h
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@echo > $@
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$(objpfx)test-float.o: $(objpfx)libm-test.stmp
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$(objpfx)test-ifloat.o: $(objpfx)libm-test.stmp
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$(objpfx)test-double.o: $(objpfx)libm-test.stmp
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$(objpfx)test-idouble.o: $(objpfx)libm-test.stmp
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$(objpfx)test-ldouble.o: $(objpfx)libm-test.stmp
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$(objpfx)test-ildoubl.o: $(objpfx)libm-test.stmp
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endif
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libm-test-fast-math-cflags = -fno-builtin -D__FAST_MATH__ -DTEST_FAST_MATH
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libm-test-vec-cflags = $(libm-test-fast-math-cflags) -fno-inline \
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-ffloat-store -D_OPENMP=201307 -Wno-unknown-pragmas
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CFLAGS-test-double-vlen2.c = $(libm-test-vec-cflags)
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CFLAGS-test-double-vlen4.c = $(libm-test-vec-cflags)
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CFLAGS-test-double-vlen4-wrappers.c = $(double-vlen4-arch-ext-cflags)
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CFLAGS-test-double-vlen8.c = $(libm-test-vec-cflags)
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CFLAGS-test-double-vlen8-wrappers.c = $(double-vlen8-arch-ext-cflags)
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CFLAGS-test-float-vlen4.c = $(libm-test-vec-cflags)
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CFLAGS-test-float-vlen8.c = $(libm-test-vec-cflags)
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CFLAGS-test-float-vlen8-wrappers.c = $(float-vlen8-arch-ext-cflags)
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CFLAGS-test-float-vlen16.c = $(libm-test-vec-cflags)
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CFLAGS-test-float-vlen16-wrappers.c = $(float-vlen16-arch-ext-cflags)
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CFLAGS-test-float.c = -fno-inline -ffloat-store -fno-builtin
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CFLAGS-test-double.c = -fno-inline -ffloat-store -fno-builtin
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CFLAGS-test-ldouble.c = -fno-inline -ffloat-store -fno-builtin
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CFLAGS-test-tgmath.c = -fno-builtin
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# The following testcase uses very long lines (>3 million), so it may take a
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# while to compile it. See: http://llvm.org/bugs/show_bug.cgi?id=14106 and
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# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402
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CFLAGS-test-tgmath2.c = -fno-builtin
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CFLAGS-test-tgmath-ret.c = -fno-builtin
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CFLAGS-test-powl.c = -fno-builtin
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CFLAGS-test-snan.c = -fsignaling-nans
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CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES \
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$(libm-test-fast-math-cflags)
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CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES \
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$(libm-test-fast-math-cflags)
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CPPFLAGS-test-ildoubl.c = -U__LIBC_INTERNAL_MATH_INLINES \
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$(libm-test-fast-math-cflags)
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# The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
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# for error handling in the -lm functions.
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install-lib += libieee.a
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non-lib.a += libieee.a
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extra-objs += libieee.a ieee-math.o
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include ../Rules
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ifneq (no,$(PERL))
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# This must come after the inclusion of sysdeps Makefiles via Rules.
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$(addprefix $(objpfx), $(addsuffix .o, $(libm-vec-tests))): $(objpfx)libm-test.stmp
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# Run the math programs to automatically generate ULPs files.
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.PHONY: regen-ulps
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run-regen-ulps = $(test-wrapper-env) \
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$(run-program-env) \
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$($*-ENV) $(rtld-prefix) $${run}
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regen-ulps: $(addprefix $(objpfx),$(libm-tests))
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rm -f $(objpfx)ULPs; rm -f $(objpfx)NewUlps; \
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cp $(ulps-file) $(objpfx)libm-test-ulps; \
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for run in $^; do \
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echo "Regenerating ULPs for $${run}"; \
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$(run-regen-ulps) -u -o $(objpfx); \
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cat $(objpfx)ULPs >> $(objpfx)libm-test-ulps; \
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rm $(objpfx)ULPs; \
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done; \
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$(PERL) gen-libm-test.pl -o $(objpfx) -n -u $(objpfx)libm-test-ulps; \
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echo "Automatic regeneration of ULPs complete."; \
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echo "Difference between the current baseline and the new baseline is:";\
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diff -urN $(ulps-file) $(objpfx)NewUlps; \
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echo "Copy $(objpfx)NewUlps to $(ulps-file) (relative to source)."
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else
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regen-ulps:
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@echo "Automatic regeneration of ULPs requires perl."; \
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exit 1;
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endif
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# The generated sysd-rules file defines rules like this for sources
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# coming from sysdeps/ directories. These rules find the generic sources.
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define o-iterator-doit
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$(objpfx)m_%$o: s_%.c $(before-compile); $$(compile-command.c)
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endef
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object-suffixes-left := $(all-object-suffixes)
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include $(o-iterator)
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# This file defines the default _LIB_VERSION variable that controls
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# the error return conventions for the math functions.
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CPPFLAGS-s_lib_version.c := -D_POSIX_MODE
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# We don't want the fdlibm code to use the inline math functions,
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# only the fdlibm code.
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math-CPPFLAGS += -D__NO_MATH_INLINES -D__LIBC_INTERNAL_MATH_INLINES
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ifneq ($(long-double-fcts),yes)
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# The `double' and `long double' types are the same on this machine.
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# We won't compile the `long double' code at all. Tell the `double' code
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# to define aliases for the `FUNCl' names. To avoid type conflicts in
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# defining those aliases, tell <math.h> to declare the `FUNCl' names with
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# `double' instead of `long double'.
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math-CPPFLAGS += -DNO_LONG_DOUBLE -D_Mlong_double_=double
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endif
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# The -lieee library is actually an object file.
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# The module just defines the _LIB_VERSION_ variable.
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# It's not a library to make sure it is linked in instead of s_lib_version.o.
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$(objpfx)libieee.a: $(objpfx)ieee-math.o
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rm -f $@
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$(patsubst %/,cd % &&,$(objpfx)) \
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$(LN_S) $(<F) $(@F)
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$(addprefix $(objpfx),$(filter-out $(tests-static) $(libm-vec-tests),$(tests))): $(libm)
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$(addprefix $(objpfx),$(tests-static)): $(objpfx)libm.a
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$(addprefix $(objpfx), $(libm-vec-tests)): $(objpfx)%: $(libm) $(libmvec) \
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$(objpfx)%-wrappers.o
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gmp-objs = $(patsubst %,$(common-objpfx)stdlib/%.o,\
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add_n sub_n cmp addmul_1 mul_1 mul_n divmod_1 \
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lshift rshift mp_clz_tab udiv_qrnnd inlines \
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$(gmp-sysdep_routines))
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$(objpfx)atest-exp: $(gmp-objs)
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$(objpfx)atest-sincos: $(gmp-objs)
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$(objpfx)atest-exp2: $(gmp-objs)
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$(objpfx)test-fenv-tls: $(shared-thread-library)
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