--- /dev/null
+/*******************************************************************************
+Copyright (c) 2015, The OpenBLAS Project
+All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+1. Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in
+the documentation and/or other materials provided with the
+distribution.
+3. Neither the name of the OpenBLAS project nor the names of
+its contributors may be used to endorse or promote products
+derived from this software without specific prior written permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#define ASSEMBLER
+#include "common.h"
+
+#define N x0 /* vector length */
+#define X x1 /* X vector address */
+#define INC_X x2 /* X stride */
+#define I x5 /* loop variable */
+
+/*******************************************************************************
+* Macro definitions
+*******************************************************************************/
+
+#if defined(USE_MIN)
+#define COND le
+#else
+#define COND ge
+#endif
+
+#if !defined(DOUBLE)
+#define REG0 wzr
+#define MAXF s0
+#define TMPF s1
+#define TMPVF {v1.s}[0]
+#define SZ 4
+#else
+#define REG0 xzr
+#define MAXF d0
+#define TMPF d1
+#define TMPVF {v1.d}[0]
+#define SZ 8
+#endif
+
+/******************************************************************************/
+
+.macro INIT_F1
+ ldr MAXF, [X], #SZ
+#if defined(USE_ABS)
+ fabs MAXF, MAXF
+#endif
+.endm
+
+.macro KERNEL_F1
+ ldr TMPF, [X], #SZ
+#if defined(USE_ABS)
+ fabs TMPF, TMPF
+#endif
+ fcmp MAXF, TMPF
+ fcsel MAXF, MAXF, TMPF, COND
+.endm
+
+.macro INIT_F4
+#if !defined(DOUBLE)
+ ld1 {v0.4s}, [X], #16
+#if defined(USE_ABS)
+ fabs v0.4s, v0.4s
+#endif
+#if defined(USE_MIN)
+ fminv MAXF, v0.4s
+#else
+ fmaxv MAXF, v0.4s
+#endif
+#else // DOUBLE
+ ld2 {v0.2d,v1.2d}, [X], #32
+#if defined(USE_ABS)
+ fabs v0.2d, v0.2d
+ fabs v1.2d, v1.2d
+#endif
+#if defined(USE_MIN)
+ fmin v0.2d, v0.2d, v1.2d
+ fminp MAXF, v0.2d
+#else
+ fmax v0.2d, v0.2d, v1.2d
+ fmaxp MAXF, v0.2d
+#endif
+#endif
+.endm
+
+.macro KERNEL_F4
+#if !defined(DOUBLE)
+ ld1 {v1.4s}, [X], #16
+#if defined(USE_ABS)
+ fabs v1.4s, v1.4s
+#endif
+#if defined(USE_MIN)
+ fminv TMPF, v1.4s
+#else
+ fmaxv TMPF, v1.4s
+#endif
+#else // DOUBLE
+ ld2 {v1.2d,v2.2d}, [X], #32
+#if defined(USE_ABS)
+ fabs v1.2d, v1.2d
+ fabs v2.2d, v2.2d
+#endif
+#if defined(USE_MIN)
+ fmin v1.2d, v1.2d, v2.2d
+ fminp TMPF, v1.2d
+#else
+ fmax v1.2d, v1.2d, v2.2d
+ fmaxp TMPF, v1.2d
+#endif
+#endif
+ fcmp MAXF, TMPF
+ fcsel MAXF, MAXF, TMPF, COND
+.endm
+
+.macro INIT_S
+#if !defined(DOUBLE)
+ lsl INC_X, INC_X, #2
+ ld1 {v0.s}[0], [X], INC_X
+#else
+ lsl INC_X, INC_X, #3
+ ld1 {v0.d}[0], [X], INC_X
+#endif
+#if defined(USE_ABS)
+ fabs MAXF, MAXF
+#endif
+.endm
+
+.macro KERNEL_S1
+ ld1 TMPVF, [X], INC_X
+#if defined(USE_ABS)
+ fabs TMPF, TMPF
+#endif
+ fcmp MAXF, TMPF
+ fcsel MAXF, MAXF, TMPF, COND
+.endm
+
+/*******************************************************************************
+* End of macro definitions
+*******************************************************************************/
+
+ PROLOGUE
+
+ cmp N, xzr
+ ble amax_kernel_zero
+ cmp INC_X, xzr
+ ble amax_kernel_zero
+
+ cmp INC_X, #1
+ bne amax_kernel_S_BEGIN
+
+amax_kernel_F_BEGIN:
+
+ asr I, N, #2
+ cmp I, xzr
+ beq amax_kernel_F1_INIT
+
+ INIT_F4
+ subs I, I, #1
+ beq amax_kernel_F1
+
+amax_kernel_F4:
+
+ KERNEL_F4
+
+ subs I, I, #1
+ bne amax_kernel_F4
+
+amax_kernel_F1:
+
+ ands I, N, #3
+ ble amax_kernel_L999
+
+amax_kernel_F10:
+
+ KERNEL_F1
+
+ subs I, I, #1
+ bne amax_kernel_F10
+
+ ret
+
+amax_kernel_F1_INIT:
+
+ INIT_F1
+ subs N, N, #1
+ b amax_kernel_F1
+
+amax_kernel_S_BEGIN:
+
+ INIT_S
+
+ subs N, N, #1
+ ble amax_kernel_L999
+
+ asr I, N, #2
+ cmp I, xzr
+ ble amax_kernel_S1
+
+amax_kernel_S4:
+
+ KERNEL_S1
+ KERNEL_S1
+ KERNEL_S1
+ KERNEL_S1
+
+ subs I, I, #1
+ bne amax_kernel_S4
+
+amax_kernel_S1:
+
+ ands I, N, #3
+ ble amax_kernel_L999
+
+amax_kernel_S10:
+
+ KERNEL_S1
+
+ subs I, I, #1
+ bne amax_kernel_S10
+
+amax_kernel_L999:
+
+ ret
+
+amax_kernel_zero:
+
+ fmov MAXF, REG0
+ ret
+
+ EPILOGUE
--- /dev/null
+/*******************************************************************************
+Copyright (c) 2015, The OpenBLAS Project
+All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+1. Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in
+the documentation and/or other materials provided with the
+distribution.
+3. Neither the name of the OpenBLAS project nor the names of
+its contributors may be used to endorse or promote products
+derived from this software without specific prior written permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************/
+
+#define ASSEMBLER
+#include "common.h"
+
+#define N x0 /* vector length */
+#define X x1 /* X vector address */
+#define INC_X x2 /* X stride */
+#define I x5 /* loop variable */
+
+/*******************************************************************************
+* Macro definitions
+*******************************************************************************/
+
+#if defined(USE_MIN)
+#define COND le
+#else
+#define COND ge
+#endif
+
+#if !defined(DOUBLE)
+#define REG0 wzr
+#define MAXF s0
+#define TMPF s1
+#define TMPVF {v1.s}[0]
+#define SZ 4
+#else
+#define REG0 xzr
+#define MAXF d0
+#define TMPF d1
+#define TMPVF {v1.d}[0]
+#define SZ 8
+#endif
+
+/******************************************************************************/
+
+.macro INIT_F1
+#if !defined(DOUBLE)
+ ld1 {v0.2s}, [X], #8
+ fabs v0.2s, v0.2s
+ ext v1.8b, v0.8b, v0.8b, #4
+ fadd MAXF, s0, s1
+#else
+ ld1 {v0.2d}, [X], #16
+ fabs v0.2d, v0.2d
+ faddp MAXF, v0.2d
+#endif
+.endm
+
+.macro KERNEL_F1
+#if !defined(DOUBLE)
+ ld1 {v1.2s}, [X], #8
+ fabs v1.2s, v1.2s
+ ext v2.8b, v1.8b, v1.8b, #4
+ fadd TMPF, s1, s2
+#else
+ ld1 {v1.2d}, [X], #16
+ fabs v1.2d, v1.2d
+ faddp TMPF, v1.2d
+#endif
+ fcmp MAXF, TMPF
+ fcsel MAXF, MAXF, TMPF, COND
+.endm
+
+.macro INIT_F4
+#if !defined(DOUBLE)
+ ld2 {v0.4s,v1.4s}, [X], #32
+ fabs v0.4s, v0.4s // [X6, X4, X2, X0]
+ fabs v1.4s, v1.4s // [X7, X5, X3, X1]
+ fadd v0.4s, v0.4s, v1.4s // [X7+X6, X5+X4, X3+X2, X1+X0]
+#if defined(USE_MIN)
+ fminv MAXF, v0.4s
+#else
+ fmaxv MAXF, v0.4s
+#endif
+#else // DOUBLE
+ ld4 {v0.2d,v1.2d,v2.2d,v3.2d}, [X], #64
+ fabs v0.2d, v0.2d
+ fabs v1.2d, v1.2d
+ fabs v2.2d, v2.2d
+ fabs v3.2d, v3.2d
+ fadd v0.2d, v0.2d, v1.2d
+ fadd v2.2d, v2.2d, v3.2d
+#if defined(USE_MIN)
+ fmin v0.2d, v0.2d, v2.2d
+ fminp MAXF, v0.2d
+#else
+ fmax v0.2d, v0.2d, v2.2d
+ fmaxp MAXF, v0.2d
+#endif
+#endif
+.endm
+
+.macro KERNEL_F4
+#if !defined(DOUBLE)
+ ld2 {v1.4s,v2.4s}, [X], #32
+ fabs v1.4s, v1.4s // [X6, X4, X2, X0]
+ fabs v2.4s, v2.4s // [X7, X5, X3, X1]
+ fadd v1.4s, v1.4s, v2.4s // [X7+X6, X5+X4, X3+X2, X1+X0]
+#if defined(USE_MIN)
+ fminv TMPF, v1.4s
+#else
+ fmaxv TMPF, v1.4s
+#endif
+#else // DOUBLE
+ ld4 {v1.2d,v2.2d,v3.2d,v4.2d}, [X], #64
+ fabs v1.2d, v1.2d
+ fabs v2.2d, v2.2d
+ fabs v3.2d, v3.2d
+ fabs v4.2d, v4.2d
+ fadd v1.2d, v1.2d, v2.2d
+ fadd v3.2d, v3.2d, v4.2d
+#if defined(USE_MIN)
+ fmin v1.2d, v1.2d, v3.2d
+ fminp MAXF, v1.2d
+#else
+ fmax v1.2d, v1.2d, v3.2d
+ fmaxp MAXF, v1.2d
+#endif
+#endif
+ fcmp MAXF, TMPF
+ fcsel MAXF, MAXF, TMPF, COND
+.endm
+
+.macro INIT_S
+#if !defined(DOUBLE)
+ lsl INC_X, INC_X, #3
+ ld1 {v0.2s}, [X], INC_X
+ fabs v0.2s, v0.2s
+ ext v1.8b, v0.8b, v0.8b, #4
+ fadd MAXF, s0, s1
+#else
+ lsl INC_X, INC_X, #4
+ ld1 {v0.2d}, [X], INC_X
+ fabs v0.2d, v0.2d
+ faddp MAXF, v0.2d
+#endif
+.endm
+
+.macro KERNEL_S1
+#if !defined(DOUBLE)
+ ld1 {v1.2s}, [X], INC_X
+ fabs v1.2s, v1.2s
+ ext v2.8b, v1.8b, v1.8b, #4
+ fadd TMPF, s1, s2
+#else
+ ld1 {v1.2d}, [X], INC_X
+ fabs v1.2d, v1.2d
+ faddp TMPF, v1.2d
+#endif
+ fcmp MAXF, TMPF
+ fcsel MAXF, MAXF, TMPF, COND
+.endm
+
+/*******************************************************************************
+* End of macro definitions
+*******************************************************************************/
+
+ PROLOGUE
+
+ cmp N, xzr
+ ble amax_kernel_zero
+ cmp INC_X, xzr
+ ble amax_kernel_zero
+
+ cmp INC_X, #1
+ bne amax_kernel_S_BEGIN
+
+amax_kernel_F_BEGIN:
+
+ asr I, N, #2
+ cmp I, xzr
+ beq amax_kernel_F1_INIT
+
+ INIT_F4
+ subs I, I, #1
+ beq amax_kernel_F1
+
+amax_kernel_F4:
+
+ KERNEL_F4
+
+ subs I, I, #1
+ bne amax_kernel_F4
+
+amax_kernel_F1:
+
+ ands I, N, #3
+ ble amax_kernel_L999
+
+amax_kernel_F10:
+
+ KERNEL_F1
+
+ subs I, I, #1
+ bne amax_kernel_F10
+
+ ret
+
+amax_kernel_F1_INIT:
+
+ INIT_F1
+ subs N, N, #1
+ b amax_kernel_F1
+
+amax_kernel_S_BEGIN:
+
+ INIT_S
+
+ subs N, N, #1
+ ble amax_kernel_L999
+
+ asr I, N, #2
+ cmp I, xzr
+ ble amax_kernel_S1
+
+amax_kernel_S4:
+
+ KERNEL_S1
+ KERNEL_S1
+ KERNEL_S1
+ KERNEL_S1
+
+ subs I, I, #1
+ bne amax_kernel_S4
+
+amax_kernel_S1:
+
+ ands I, N, #3
+ ble amax_kernel_L999
+
+amax_kernel_S10:
+
+ KERNEL_S1
+
+ subs I, I, #1
+ bne amax_kernel_S10
+
+amax_kernel_L999:
+
+ ret
+
+amax_kernel_zero:
+
+ fmov MAXF, REG0
+ ret
+
+ EPILOGUE
projects / platform / upstream / openblas.git / commitdiff