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6089a3ee24
This patch replaces i386 assembly versions of e_log2f with generic e_log2f.c. For workload-spec2017.wrf, on Nehalem, it improves performance by: Before After Improvement reciprocal-throughput 92.3845 30.8752 199% latency 112.855 54.8645 105% On Skylake, it improves performance by: Before After Improvement reciprocal-throughput 98.7488 22.7507 334% latency 118.01 51.6083 128% On IvyBridge with --disable-multi-arch, it improves performance by: Before After Improvement reciprocal-throughput 106.635 28.8596 269% latency 129.888 56.9187 128% * sysdeps/i386/fpu/e_log2f.S: Removed. * sysdeps/i386/fpu/e_log2f_data.c: Likewise. * sysdeps/i386/fpu/w_log2f.c: Likewise. * sysdeps/i386/fpu/libm-test-ulps: Updated for generic e_log2f.c. * sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise. * sysdeps/i386/i686/fpu/multiarch/Makefile (libm-sysdep_routines): Add e_log2f-sse2. (CFLAGS-e_log2f-sse2.c): New. * sysdeps/i386/i686/fpu/multiarch/e_log2f-sse2.c: New file. * sysdeps/i386/i686/fpu/multiarch/e_log2f.c: Likewise.
10 lines
321 B
Makefile
10 lines
321 B
Makefile
ifeq ($(subdir),math)
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libm-sysdep_routines += e_exp2f-sse2 e_expf-sse2 e_logf-sse2 e_log2f-sse2 \
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s_sinf-sse2 s_cosf-sse2 s_sincosf-sse2
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CFLAGS-e_exp2f-sse2.c = -msse2 -mfpmath=sse
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CFLAGS-e_expf-sse2.c = -msse2 -mfpmath=sse
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CFLAGS-e_log2f-sse2.c = -msse2 -mfpmath=sse
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CFLAGS-e_logf-sse2.c = -msse2 -mfpmath=sse
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endif
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