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author | Sunil K Pandey <skpgkp2@gmail.com> | 2021-12-29 09:23:37 -0800 |
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committer | Sunil K Pandey <skpgkp2@gmail.com> | 2021-12-29 11:38:15 -0800 |
commit | 8f8566026dbe4ab104cab5845c4cdc9896702fdb (patch) | |
tree | 12604d1b62f90448825bce3b640a28dbb505f21b /sysdeps/x86_64/fpu/multiarch/svml_s_log10f16_core_avx512.S | |
parent | 2941a24f8c914403bd14b035f806de9491622453 (diff) | |
download | glibc-8f8566026dbe4ab104cab5845c4cdc9896702fdb.tar.gz glibc-8f8566026dbe4ab104cab5845c4cdc9896702fdb.tar.xz glibc-8f8566026dbe4ab104cab5845c4cdc9896702fdb.zip |
x86-64: Add vector log10/log10f implementation to libmvec
Implement vectorized log10/log10f containing SSE, AVX, AVX2 and AVX512 versions for libmvec as per vector ABI. It also contains accuracy and ABI tests for vector log10/log10f with regenerated ulps. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
Diffstat (limited to 'sysdeps/x86_64/fpu/multiarch/svml_s_log10f16_core_avx512.S')
-rw-r--r-- | sysdeps/x86_64/fpu/multiarch/svml_s_log10f16_core_avx512.S | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_s_log10f16_core_avx512.S b/sysdeps/x86_64/fpu/multiarch/svml_s_log10f16_core_avx512.S new file mode 100644 index 0000000000..3dffd662ab --- /dev/null +++ b/sysdeps/x86_64/fpu/multiarch/svml_s_log10f16_core_avx512.S @@ -0,0 +1,238 @@ +/* Function log10f vectorized with AVX-512. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + https://www.gnu.org/licenses/. */ + +/* + * ALGORITHM DESCRIPTION: + * + * Get short reciprocal approximation Rcp ~ 1/mantissa(x) + * R = Rcp*x - 1.0 + * log10(x) = k*log10(2.0) - log10(Rcp) + poly_approximation(R) + * log10(Rcp) is tabulated + * + * + */ + +/* Offsets for data table __svml_slog10_data_internal_avx512 + */ +#define One 0 +#define coeff4 64 +#define coeff3 128 +#define coeff2 192 +#define coeff1 256 +#define L2 320 + +#include <sysdep.h> + + .text + .section .text.exex512,"ax",@progbits +ENTRY(_ZGVeN16v_log10f_skx) + pushq %rbp + cfi_def_cfa_offset(16) + movq %rsp, %rbp + cfi_def_cfa(6, 16) + cfi_offset(6, -16) + andq $-64, %rsp + subq $192, %rsp + vgetmantps $11, {sae}, %zmm0, %zmm3 + vmovups __svml_slog10_data_internal_avx512(%rip), %zmm1 + vgetexpps {sae}, %zmm0, %zmm5 + vmovups L2+__svml_slog10_data_internal_avx512(%rip), %zmm10 + vpsrld $19, %zmm3, %zmm7 + vgetexpps {sae}, %zmm3, %zmm6 + vsubps {rn-sae}, %zmm1, %zmm3, %zmm11 + vpermps coeff4+__svml_slog10_data_internal_avx512(%rip), %zmm7, %zmm1 + vpermps coeff3+__svml_slog10_data_internal_avx512(%rip), %zmm7, %zmm2 + vsubps {rn-sae}, %zmm6, %zmm5, %zmm9 + vpermps coeff2+__svml_slog10_data_internal_avx512(%rip), %zmm7, %zmm4 + vpermps coeff1+__svml_slog10_data_internal_avx512(%rip), %zmm7, %zmm8 + +/* x<=0? */ + vfpclassps $94, %zmm0, %k0 + vfmadd213ps {rn-sae}, %zmm2, %zmm11, %zmm1 + vmulps {rn-sae}, %zmm10, %zmm9, %zmm12 + vfmadd213ps {rn-sae}, %zmm4, %zmm11, %zmm1 + kmovw %k0, %edx + vfmadd213ps {rn-sae}, %zmm8, %zmm11, %zmm1 + vfmadd213ps {rn-sae}, %zmm12, %zmm11, %zmm1 + testl %edx, %edx + +/* Go to special inputs processing branch */ + jne L(SPECIAL_VALUES_BRANCH) + # LOE rbx r12 r13 r14 r15 edx zmm0 zmm1 + +/* Restore registers + * and exit the function + */ + +L(EXIT): + vmovaps %zmm1, %zmm0 + movq %rbp, %rsp + popq %rbp + cfi_def_cfa(7, 8) + cfi_restore(6) + ret + cfi_def_cfa(6, 16) + cfi_offset(6, -16) + +/* Branch to process + * special inputs + */ + +L(SPECIAL_VALUES_BRANCH): + vmovups %zmm0, 64(%rsp) + vmovups %zmm1, 128(%rsp) + # LOE rbx r12 r13 r14 r15 edx zmm1 + + xorl %eax, %eax + # LOE rbx r12 r13 r14 r15 eax edx + + vzeroupper + movq %r12, 16(%rsp) + /* DW_CFA_expression: r12 (r12) (DW_OP_lit8; DW_OP_minus; DW_OP_const4s: -64; DW_OP_and; DW_OP_const4s: -176; DW_OP_plus) */ + .cfi_escape 0x10, 0x0c, 0x0e, 0x38, 0x1c, 0x0d, 0xc0, 0xff, 0xff, 0xff, 0x1a, 0x0d, 0x50, 0xff, 0xff, 0xff, 0x22 + movl %eax, %r12d + movq %r13, 8(%rsp) + /* DW_CFA_expression: r13 (r13) (DW_OP_lit8; DW_OP_minus; DW_OP_const4s: -64; DW_OP_and; DW_OP_const4s: -184; DW_OP_plus) */ + .cfi_escape 0x10, 0x0d, 0x0e, 0x38, 0x1c, 0x0d, 0xc0, 0xff, 0xff, 0xff, 0x1a, 0x0d, 0x48, 0xff, 0xff, 0xff, 0x22 + movl %edx, %r13d + movq %r14, (%rsp) + /* DW_CFA_expression: r14 (r14) (DW_OP_lit8; DW_OP_minus; DW_OP_const4s: -64; DW_OP_and; DW_OP_const4s: -192; DW_OP_plus) */ + .cfi_escape 0x10, 0x0e, 0x0e, 0x38, 0x1c, 0x0d, 0xc0, 0xff, 0xff, 0xff, 0x1a, 0x0d, 0x40, 0xff, 0xff, 0xff, 0x22 + # LOE rbx r15 r12d r13d + +/* Range mask + * bits check + */ + +L(RANGEMASK_CHECK): + btl %r12d, %r13d + +/* Call scalar math function */ + jc L(SCALAR_MATH_CALL) + # LOE rbx r15 r12d r13d + +/* Special inputs + * processing loop + */ + +L(SPECIAL_VALUES_LOOP): + incl %r12d + cmpl $16, %r12d + +/* Check bits in range mask */ + jl L(RANGEMASK_CHECK) + # LOE rbx r15 r12d r13d + + movq 16(%rsp), %r12 + cfi_restore(12) + movq 8(%rsp), %r13 + cfi_restore(13) + movq (%rsp), %r14 + cfi_restore(14) + vmovups 128(%rsp), %zmm1 + +/* Go to exit */ + jmp L(EXIT) + /* DW_CFA_expression: r12 (r12) (DW_OP_lit8; DW_OP_minus; DW_OP_const4s: -64; DW_OP_and; DW_OP_const4s: -176; DW_OP_plus) */ + .cfi_escape 0x10, 0x0c, 0x0e, 0x38, 0x1c, 0x0d, 0xc0, 0xff, 0xff, 0xff, 0x1a, 0x0d, 0x50, 0xff, 0xff, 0xff, 0x22 + /* DW_CFA_expression: r13 (r13) (DW_OP_lit8; DW_OP_minus; DW_OP_const4s: -64; DW_OP_and; DW_OP_const4s: -184; DW_OP_plus) */ + .cfi_escape 0x10, 0x0d, 0x0e, 0x38, 0x1c, 0x0d, 0xc0, 0xff, 0xff, 0xff, 0x1a, 0x0d, 0x48, 0xff, 0xff, 0xff, 0x22 + /* DW_CFA_expression: r14 (r14) (DW_OP_lit8; DW_OP_minus; DW_OP_const4s: -64; DW_OP_and; DW_OP_const4s: -192; DW_OP_plus) */ + .cfi_escape 0x10, 0x0e, 0x0e, 0x38, 0x1c, 0x0d, 0xc0, 0xff, 0xff, 0xff, 0x1a, 0x0d, 0x40, 0xff, 0xff, 0xff, 0x22 + # LOE rbx r12 r13 r14 r15 zmm1 + +/* Scalar math fucntion call + * to process special input + */ + +L(SCALAR_MATH_CALL): + movl %r12d, %r14d + movss 64(%rsp,%r14,4), %xmm0 + call log10f@PLT + # LOE rbx r14 r15 r12d r13d xmm0 + + movss %xmm0, 128(%rsp,%r14,4) + +/* Process special inputs in loop */ + jmp L(SPECIAL_VALUES_LOOP) + # LOE rbx r15 r12d r13d +END(_ZGVeN16v_log10f_skx) + + .section .rodata, "a" + .align 64 + +#ifdef __svml_slog10_data_internal_avx512_typedef +typedef unsigned int VUINT32; +typedef struct { + __declspec(align(64)) VUINT32 One[16][1]; + __declspec(align(64)) VUINT32 coeff4[16][1]; + __declspec(align(64)) VUINT32 coeff3[16][1]; + __declspec(align(64)) VUINT32 coeff2[16][1]; + __declspec(align(64)) VUINT32 coeff1[16][1]; + __declspec(align(64)) VUINT32 L2[16][1]; + } __svml_slog10_data_internal_avx512; +#endif +__svml_slog10_data_internal_avx512: + /*== One ==*/ + .long 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000, 0x3f800000 + // c4 + .align 64 + .long 0xbdc9ae9b, 0xbda6fcf4 + .long 0xbd8bac76, 0xbd6bca30 + .long 0xbd48a99b, 0xbd2c0a9f + .long 0xbd1480db, 0xbd00faf2 + .long 0xbe823aa9, 0xbe656348 + .long 0xbe4afbb9, 0xbe346895 + .long 0xbe20ffff, 0xbe103a0b + .long 0xbe01a91c, 0xbde9e84e + // c3 + .align 64 + .long 0x3e13d888, 0x3e10a87c + .long 0x3e0b95c3, 0x3e057f0b + .long 0x3dfde038, 0x3df080d9 + .long 0x3de34c1e, 0x3dd68333 + .long 0x3dac6e8e, 0x3dd54a51 + .long 0x3df30f40, 0x3e04235d + .long 0x3e0b7033, 0x3e102c90 + .long 0x3e12ebad, 0x3e141ff8 + // c2 + .align 64 + .long 0xbe5e5a9b, 0xbe5e2677 + .long 0xbe5d83f5, 0xbe5c6016 + .long 0xbe5abd0b, 0xbe58a6fd + .long 0xbe562e02, 0xbe5362f8 + .long 0xbe68e27c, 0xbe646747 + .long 0xbe619a73, 0xbe5ff05a + .long 0xbe5f0570, 0xbe5e92d0 + .long 0xbe5e662b, 0xbe5e5c08 + // c1 + .align 64 + .long 0x3ede5bd8, 0x3ede5b45 + .long 0x3ede57d8, 0x3ede4eb1 + .long 0x3ede3d37, 0x3ede2166 + .long 0x3eddf9d9, 0x3eddc5bb + .long 0x3ede08ed, 0x3ede32e7 + .long 0x3ede4967, 0x3ede5490 + .long 0x3ede597f, 0x3ede5b50 + .long 0x3ede5bca, 0x3ede5bd9 + /*== L2 ==*/ + .align 64 + .long 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b, 0x3e9a209b + .align 64 + .type __svml_slog10_data_internal_avx512,@object + .size __svml_slog10_data_internal_avx512,.-__svml_slog10_data_internal_avx512 |