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Diffstat (limited to 'sysdeps/x86_64/fpu/multiarch/svml_s_exp10f8_core_avx2.S')
-rw-r--r--sysdeps/x86_64/fpu/multiarch/svml_s_exp10f8_core_avx2.S331
1 files changed, 331 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/multiarch/svml_s_exp10f8_core_avx2.S b/sysdeps/x86_64/fpu/multiarch/svml_s_exp10f8_core_avx2.S
new file mode 100644
index 0000000..b576412
--- /dev/null
+++ b/sysdeps/x86_64/fpu/multiarch/svml_s_exp10f8_core_avx2.S
@@ -0,0 +1,331 @@
+/* Function exp10f vectorized with AVX2.
+ 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:
+ *
+ * exp10(x) = 2^x/log10(2) = 2^n * (1 + T[j]) * (1 + P(y))
+ * where
+ * x = m*log10(2)/K + y, y in [-log10(2)/K..log10(2)/K]
+ * m = n*K + j, m,n,j - signed integer, j in [-K/2..K/2]
+ *
+ * values of 2^j/K are tabulated
+ *
+ * P(y) is a minimax polynomial approximation of exp10(x)-1
+ * on small interval [-log10(2)/K..log10(2)/K]
+ *
+ * Special cases:
+ *
+ * exp10(NaN) = NaN
+ * exp10(+INF) = +INF
+ * exp10(-INF) = 0
+ * exp10(x) = 1 for subnormals
+ * For IEEE float
+ * if x > 38.5318412780761720 then exp10f(x) overflow
+ * if x < -45.4555282592773440 then exp10f(x) underflow
+ *
+ */
+
+/* Offsets for data table __svml_sexp10_data_internal
+ */
+#define _sT 0
+#define _sLg2_10 128
+#define _sShifter 160
+#define _sInvLg2_10hi 192
+#define _sInvLg2_10lo 224
+#define _sPC0 256
+#define _sPC1 288
+#define _sPC2 320
+#define _iIndexMask 352
+#define _iAbsMask 384
+#define _iDomainRange 416
+
+#include <sysdep.h>
+
+ .text
+ .section .text.avx2,"ax",@progbits
+ENTRY(_ZGVdN8v_exp10f_avx2)
+ pushq %rbp
+ cfi_def_cfa_offset(16)
+ movq %rsp, %rbp
+ cfi_def_cfa(6, 16)
+ cfi_offset(6, -16)
+ andq $-32, %rsp
+ subq $96, %rsp
+ lea __svml_sexp10_data_internal(%rip), %rax
+ vmovups _sShifter+__svml_sexp10_data_internal(%rip), %ymm4
+
+/* Load arument */
+ vmovups _sLg2_10+__svml_sexp10_data_internal(%rip), %ymm1
+ vmovups _iIndexMask+__svml_sexp10_data_internal(%rip), %ymm2
+ vmovaps %ymm0, %ymm3
+ vfmadd213ps %ymm4, %ymm3, %ymm1
+
+/* Index and lookup */
+ vandps %ymm2, %ymm1, %ymm7
+
+/* iIndex *= sizeof(S); */
+ vpslld $2, %ymm7, %ymm10
+ vsubps %ymm4, %ymm1, %ymm0
+
+/* Check for overflow\underflow */
+ vandps _iAbsMask+__svml_sexp10_data_internal(%rip), %ymm3, %ymm5
+ vpcmpgtd _iDomainRange+__svml_sexp10_data_internal(%rip), %ymm5, %ymm6
+ vmovmskps %ymm6, %edx
+ vmovd %xmm10, %ecx
+ vextractf128 $1, %ymm10, %xmm6
+ vpextrd $1, %xmm10, %esi
+ vpextrd $2, %xmm10, %edi
+ vpextrd $3, %xmm10, %r8d
+ movslq %ecx, %rcx
+ movslq %esi, %rsi
+ movslq %edi, %rdi
+ movslq %r8d, %r8
+ vmovd (%rax,%rcx), %xmm8
+ vmovd (%rax,%rsi), %xmm9
+ vmovd (%rax,%rdi), %xmm11
+ vmovd (%rax,%r8), %xmm12
+ vpunpckldq %xmm9, %xmm8, %xmm13
+ vpunpckldq %xmm12, %xmm11, %xmm14
+ vpunpcklqdq %xmm14, %xmm13, %xmm15
+
+/* R */
+ vmovups _sInvLg2_10hi+__svml_sexp10_data_internal(%rip), %ymm13
+ vmovd %xmm6, %r9d
+ vfnmadd213ps %ymm3, %ymm0, %ymm13
+ vpextrd $1, %xmm6, %r10d
+ movslq %r9d, %r9
+ movslq %r10d, %r10
+ vfnmadd132ps _sInvLg2_10lo+__svml_sexp10_data_internal(%rip), %ymm13, %ymm0
+ vmovd (%rax,%r9), %xmm4
+ vmovd (%rax,%r10), %xmm5
+ vpunpckldq %xmm5, %xmm4, %xmm9
+
+/*
+ * Polynomial
+ * exp10 = 2^N*(Tj+Tj*poly)
+ * poly(sN) = {1+later} a0+a1*sR
+ */
+ vmovups _sPC2+__svml_sexp10_data_internal(%rip), %ymm4
+ vfmadd213ps _sPC1+__svml_sexp10_data_internal(%rip), %ymm0, %ymm4
+ vpextrd $2, %xmm6, %r11d
+ vpextrd $3, %xmm6, %ecx
+ movslq %r11d, %r11
+ movslq %ecx, %rcx
+ vfmadd213ps _sPC0+__svml_sexp10_data_internal(%rip), %ymm0, %ymm4
+ vmovd (%rax,%r11), %xmm7
+ vmovd (%rax,%rcx), %xmm8
+ vpunpckldq %xmm8, %xmm7, %xmm11
+
+/* remove index bits */
+ vpandn %ymm1, %ymm2, %ymm0
+ vpunpcklqdq %xmm11, %xmm9, %xmm12
+
+/* 2^N */
+ vpslld $18, %ymm0, %ymm1
+ vinsertf128 $1, %xmm12, %ymm15, %ymm14
+
+/* Tj_l+Tj_h*poly */
+ vfmadd213ps %ymm14, %ymm14, %ymm4
+
+/* quick mul 2^N */
+ vpaddd %ymm1, %ymm4, %ymm0
+
+/* Finish */
+ testl %edx, %edx
+
+/* Go to special inputs processing branch */
+ jne L(SPECIAL_VALUES_BRANCH)
+ # LOE rbx r12 r13 r14 r15 edx ymm0 ymm3
+
+/* Restore registers
+ * and exit the function
+ */
+
+L(EXIT):
+ 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 %ymm3, 32(%rsp)
+ vmovups %ymm0, 64(%rsp)
+ # LOE rbx r12 r13 r14 r15 edx ymm0
+
+ 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: -32; DW_OP_and; DW_OP_const4s: -80; DW_OP_plus) */
+ .cfi_escape 0x10, 0x0c, 0x0e, 0x38, 0x1c, 0x0d, 0xe0, 0xff, 0xff, 0xff, 0x1a, 0x0d, 0xb0, 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: -32; DW_OP_and; DW_OP_const4s: -88; DW_OP_plus) */
+ .cfi_escape 0x10, 0x0d, 0x0e, 0x38, 0x1c, 0x0d, 0xe0, 0xff, 0xff, 0xff, 0x1a, 0x0d, 0xa8, 0xff, 0xff, 0xff, 0x22
+ movl %edx, %r13d
+ movq %r14, (%rsp)
+ /* DW_CFA_expression: r14 (r14) (DW_OP_lit8; DW_OP_minus; DW_OP_const4s: -32; DW_OP_and; DW_OP_const4s: -96; DW_OP_plus) */
+ .cfi_escape 0x10, 0x0e, 0x0e, 0x38, 0x1c, 0x0d, 0xe0, 0xff, 0xff, 0xff, 0x1a, 0x0d, 0xa0, 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 $8, %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 64(%rsp), %ymm0
+
+/* Go to exit */
+ jmp L(EXIT)
+ /* DW_CFA_expression: r12 (r12) (DW_OP_lit8; DW_OP_minus; DW_OP_const4s: -32; DW_OP_and; DW_OP_const4s: -80; DW_OP_plus) */
+ .cfi_escape 0x10, 0x0c, 0x0e, 0x38, 0x1c, 0x0d, 0xe0, 0xff, 0xff, 0xff, 0x1a, 0x0d, 0xb0, 0xff, 0xff, 0xff, 0x22
+ /* DW_CFA_expression: r13 (r13) (DW_OP_lit8; DW_OP_minus; DW_OP_const4s: -32; DW_OP_and; DW_OP_const4s: -88; DW_OP_plus) */
+ .cfi_escape 0x10, 0x0d, 0x0e, 0x38, 0x1c, 0x0d, 0xe0, 0xff, 0xff, 0xff, 0x1a, 0x0d, 0xa8, 0xff, 0xff, 0xff, 0x22
+ /* DW_CFA_expression: r14 (r14) (DW_OP_lit8; DW_OP_minus; DW_OP_const4s: -32; DW_OP_and; DW_OP_const4s: -96; DW_OP_plus) */
+ .cfi_escape 0x10, 0x0e, 0x0e, 0x38, 0x1c, 0x0d, 0xe0, 0xff, 0xff, 0xff, 0x1a, 0x0d, 0xa0, 0xff, 0xff, 0xff, 0x22
+ # LOE rbx r12 r13 r14 r15 ymm0
+
+/* Scalar math fucntion call
+ * to process special input
+ */
+
+L(SCALAR_MATH_CALL):
+ movl %r12d, %r14d
+ movss 32(%rsp,%r14,4), %xmm0
+ call exp10f@PLT
+ # LOE rbx r14 r15 r12d r13d xmm0
+
+ movss %xmm0, 64(%rsp,%r14,4)
+
+/* Process special inputs in loop */
+ jmp L(SPECIAL_VALUES_LOOP)
+ # LOE rbx r15 r12d r13d
+END(_ZGVdN8v_exp10f_avx2)
+
+ .section .rodata, "a"
+ .align 32
+
+#ifdef __svml_sexp10_data_internal_typedef
+typedef unsigned int VUINT32;
+typedef struct
+{
+ __declspec(align(32)) VUINT32 _sT[(1<<5)][1];
+ __declspec(align(32)) VUINT32 _sLg2_10[8][1];
+ __declspec(align(32)) VUINT32 _sShifter[8][1];
+ __declspec(align(32)) VUINT32 _sInvLg2_10hi[8][1];
+ __declspec(align(32)) VUINT32 _sInvLg2_10lo[8][1];
+ __declspec(align(32)) VUINT32 _sPC0[8][1];
+ __declspec(align(32)) VUINT32 _sPC1[8][1];
+ __declspec(align(32)) VUINT32 _sPC2[8][1];
+ __declspec(align(32)) VUINT32 _iIndexMask[8][1];
+ __declspec(align(32)) VUINT32 _iAbsMask[8][1];
+ __declspec(align(32)) VUINT32 _iDomainRange[8][1];
+} __svml_sexp10_data_internal;
+#endif
+__svml_sexp10_data_internal:
+ /*== _sT ==*/
+ .long 0x3f800000 // 2^( 0 /32 )
+ .long 0x3f82cd87 // 2^( 1 /32 )
+ .long 0x3f85aac3 // 2^( 2 /32 )
+ .long 0x3f88980f // 2^( 3 /32 )
+ .long 0x3f8b95c2 // 2^( 4 /32 )
+ .long 0x3f8ea43a // 2^( 5 /32 )
+ .long 0x3f91c3d3 // 2^( 6 /32 )
+ .long 0x3f94f4f0 // 2^( 7 /32 )
+ .long 0x3f9837f0 // 2^( 8 /32 )
+ .long 0x3f9b8d3a // 2^( 9 /32 )
+ .long 0x3f9ef532 // 2^( 10/32 )
+ .long 0x3fa27043 // 2^( 11/32 )
+ .long 0x3fa5fed7 // 2^( 12/32 )
+ .long 0x3fa9a15b // 2^( 13/32 )
+ .long 0x3fad583f // 2^( 14/32 )
+ .long 0x3fb123f6 // 2^( 15/32 )
+ .long 0x3fb504f3 // 2^( 16/32 )
+ .long 0x3fb8fbaf // 2^( 17/32 )
+ .long 0x3fbd08a4 // 2^( 18/32 )
+ .long 0x3fc12c4d // 2^( 19/32 )
+ .long 0x3fc5672a // 2^( 20/32 )
+ .long 0x3fc9b9be // 2^( 21/32 )
+ .long 0x3fce248c // 2^( 22/32 )
+ .long 0x3fd2a81e // 2^( 23/32 )
+ .long 0x3fd744fd // 2^( 24/32 )
+ .long 0x3fdbfbb8 // 2^( 25/32 )
+ .long 0x3fe0ccdf // 2^( 26/32 )
+ .long 0x3fe5b907 // 2^( 27/32 )
+ .long 0x3feac0c7 // 2^( 28/32 )
+ .long 0x3fefe4ba // 2^( 29/32 )
+ .long 0x3ff5257d // 2^( 30/32 )
+ .long 0x3ffa83b3 // 2^( 31/32 )
+ .align 32
+ .long 0x42d49a78, 0x42d49a78, 0x42d49a78, 0x42d49a78, 0x42d49a78, 0x42d49a78, 0x42d49a78, 0x42d49a78 /* _sLg2_10*2^K */
+ .align 32
+ .long 0x4b400000, 0x4b400000, 0x4b400000, 0x4b400000, 0x4b400000, 0x4b400000, 0x4b400000, 0x4b400000 /* _sShifter) */
+ .align 32
+ .long 0x3c1a2000, 0x3c1a2000, 0x3c1a2000, 0x3c1a2000, 0x3c1a2000, 0x3c1a2000, 0x3c1a2000, 0x3c1a2000 /* _sInvLg2_10hi/2^K hi (24-K-7) bits*/
+ .align 32
+ .long 0x341a84fc, 0x341a84fc, 0x341a84fc, 0x341a84fc, 0x341a84fc, 0x341a84fc, 0x341a84fc, 0x341a84fc /* _sInvLg2_10lo/2^K lo bits */
+ // otherwise exp10(0) won't produce exact 1.0
+ .align 32
+ .long 0x2fecc868, 0x2fecc868, 0x2fecc868, 0x2fecc868, 0x2fecc868, 0x2fecc868, 0x2fecc868, 0x2fecc868 /* _sPC0 */
+ .align 32
+ .long 0x40135e1b, 0x40135e1b, 0x40135e1b, 0x40135e1b, 0x40135e1b, 0x40135e1b, 0x40135e1b, 0x40135e1b /* _sPC1 */
+ .align 32
+ .long 0x4029a8d2, 0x4029a8d2, 0x4029a8d2, 0x4029a8d2, 0x4029a8d2, 0x4029a8d2, 0x4029a8d2, 0x4029a8d2 /* _sPC2 */
+ .align 32
+ .long 0x0000001f, 0x0000001f, 0x0000001f, 0x0000001f, 0x0000001f, 0x0000001f, 0x0000001f, 0x0000001f /* _iIndexMask =(2^K-1)*/
+ //common
+ .align 32
+ .long 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff /* _iAbsMask */
+ .align 32
+ .long 0x4217b818, 0x4217b818, 0x4217b818, 0x4217b818, 0x4217b818, 0x4217b818, 0x4217b818, 0x4217b818 /* _iDomainRange=-log10(max_denormal=0x007fffff) RZ */
+ .align 32
+ .type __svml_sexp10_data_internal,@object
+ .size __svml_sexp10_data_internal,.-__svml_sexp10_data_internal
generated by cgit v1.1 at 2024-08-26 08:51:37 +0000