From f036be9ce2d9b7f2e43e3754d8c1317ada7c9b4a Mon Sep 17 00:00:00 2001 From: Ashwin Sekhar T K Date: Sun, 19 Feb 2017 23:12:27 -0800 Subject: [PATCH] THUNDERX2T99: Add Optimized SDOT Implementation --- kernel/arm64/KERNEL.THUNDERX2T99 | 3 +- kernel/arm64/ddot_thunderx2t99.c | 269 -------------------- kernel/arm64/dot_thunderx2t99.c | 423 +++++++++++++++++++++++++++++++ 3 files changed, 425 insertions(+), 270 deletions(-) delete mode 100644 kernel/arm64/ddot_thunderx2t99.c create mode 100644 kernel/arm64/dot_thunderx2t99.c diff --git a/kernel/arm64/KERNEL.THUNDERX2T99 b/kernel/arm64/KERNEL.THUNDERX2T99 index 2d3f57af0..1c31cea51 100644 --- a/kernel/arm64/KERNEL.THUNDERX2T99 +++ b/kernel/arm64/KERNEL.THUNDERX2T99 @@ -25,7 +25,8 @@ CNRM2KERNEL = scnrm2_thunderx2t99.c DAXPYKERNEL = daxpy_thunderx2t99.S -DDOTKERNEL = ddot_thunderx2t99.c +DDOTKERNEL = dot_thunderx2t99.c +SDOTKERNEL = dot_thunderx2t99.c ifeq ($(DGEMM_UNROLL_M)x$(DGEMM_UNROLL_N), 8x4) diff --git a/kernel/arm64/ddot_thunderx2t99.c b/kernel/arm64/ddot_thunderx2t99.c deleted file mode 100644 index cb894d5ee..000000000 --- a/kernel/arm64/ddot_thunderx2t99.c +++ /dev/null @@ -1,269 +0,0 @@ -/*************************************************************************** -Copyright (c) 2017, 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. -*****************************************************************************/ - - -#include "common.h" - -#include - -#define N "x0" /* vector length */ -#define X "x1" /* "X" vector address */ -#define INC_X "x2" /* "X" stride */ -#define Y "x3" /* "Y" vector address */ -#define INC_Y "x4" /* "Y" stride */ -#define J "x5" /* loop variable */ - -#define REG0 "xzr" -#define DOTF "d0" -#define TMPX "d16" -#define LD1VX "{v16.d}[0]" -#define TMPY "d24" -#define LD1VY "{v24.d}[0]" -#define SZ "8" - -#if defined(SMP) -extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n, - BLASLONG k, void *alpha, void *a, BLASLONG lda, void *b, BLASLONG ldb, - void *c, BLASLONG ldc, int (*function)(), int nthreads); -#endif - - -static FLOAT ddot_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y) -{ - FLOAT dot = 0.0 ; - - if ( n < 0 ) return(dot); - - __asm__ __volatile__ ( - " mov "N", %[N_] \n" - " mov "X", %[X_] \n" - " mov "INC_X", %[INCX_] \n" - " mov "Y", %[Y_] \n" - " mov "INC_Y", %[INCY_] \n" - " fmov "DOTF", "REG0" \n" - " fmov d1, "REG0" \n" - " fmov d2, "REG0" \n" - " fmov d3, "REG0" \n" - " fmov d4, "REG0" \n" - " fmov d5, "REG0" \n" - " fmov d6, "REG0" \n" - " fmov d7, "REG0" \n" - - " cmp "N", xzr \n" - " ble .Ldot_kernel_L999 \n" - - " cmp "INC_X", #1 \n" - " bne .Ldot_kernel_S_BEGIN \n" - " cmp "INC_Y", #1 \n" - " bne .Ldot_kernel_S_BEGIN \n" - - ".Ldot_kernel_F_BEGIN: \n" - " asr "J", "N", #5 \n" - " cmp "J", xzr \n" - " beq .Ldot_kernel_F1 \n" - - " .align 5 \n" - ".Ldot_kernel_F32: \n" - " ldp q16, q17, ["X"] \n" - " ldp q24, q25, ["Y"] \n" - " ldp q18, q19, ["X", #32] \n" - " ldp q26, q27, ["Y", #32] \n" - " fmla v0.2d, v16.2d, v24.2d \n" - " fmla v1.2d, v17.2d, v25.2d \n" - " ldp q20, q21, ["X", #64] \n" - " ldp q28, q29, ["Y", #64] \n" - " fmla v2.2d, v18.2d, v26.2d \n" - " fmla v3.2d, v19.2d, v27.2d \n" - " ldp q22, q23, ["X", #96] \n" - " ldp q30, q31, ["Y", #96] \n" - " add "Y", "Y", #128 \n" - " add "X", "X", #128 \n" - " fmla v4.2d, v20.2d, v28.2d \n" - " fmla v5.2d, v21.2d, v29.2d \n" - " PRFM PLDL1KEEP, ["X", #896] \n" - " PRFM PLDL1KEEP, ["Y", #896] \n" - " PRFM PLDL1KEEP, ["X", #896+64] \n" - " PRFM PLDL1KEEP, ["Y", #896+64] \n" - " fmla v6.2d, v22.2d, v30.2d \n" - " fmla v7.2d, v23.2d, v31.2d \n" - - " ldp q16, q17, ["X"] \n" - " ldp q24, q25, ["Y"] \n" - " ldp q18, q19, ["X", #32] \n" - " ldp q26, q27, ["Y", #32] \n" - " fmla v0.2d, v16.2d, v24.2d \n" - " fmla v1.2d, v17.2d, v25.2d \n" - " ldp q20, q21, ["X", #64] \n" - " ldp q28, q29, ["Y", #64] \n" - " fmla v2.2d, v18.2d, v26.2d \n" - " fmla v3.2d, v19.2d, v27.2d \n" - " ldp q22, q23, ["X", #96] \n" - " ldp q30, q31, ["Y", #96] \n" - " add "Y", "Y", #128 \n" - " add "X", "X", #128 \n" - " fmla v4.2d, v20.2d, v28.2d \n" - " fmla v5.2d, v21.2d, v29.2d \n" - " PRFM PLDL1KEEP, ["X", #896] \n" - " PRFM PLDL1KEEP, ["Y", #896] \n" - " PRFM PLDL1KEEP, ["X", #896+64] \n" - " PRFM PLDL1KEEP, ["Y", #896+64] \n" - " fmla v6.2d, v22.2d, v30.2d \n" - " fmla v7.2d, v23.2d, v31.2d \n" - - " subs "J", "J", #1 \n" - " bne .Ldot_kernel_F32 \n" - - " fadd v0.2d, v0.2d, v1.2d \n" - " fadd v2.2d, v2.2d, v3.2d \n" - " fadd v4.2d, v4.2d, v5.2d \n" - " fadd v6.2d, v6.2d, v7.2d \n" - " fadd v0.2d, v0.2d, v2.2d \n" - " fadd v4.2d, v4.2d, v6.2d \n" - " fadd v0.2d, v0.2d, v4.2d \n" - " faddp "DOTF", v0.2d \n" - - ".Ldot_kernel_F1: \n" - " ands "J", "N", #31 \n" - " ble .Ldot_kernel_L999 \n" - - ".Ldot_kernel_F10: \n" - " ldr "TMPX", ["X"] \n" - " ldr "TMPY", ["Y"] \n" - " add "X", "X", #"SZ" \n" - " add "Y", "Y", #"SZ" \n" - " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" - - " subs "J", "J", #1 \n" - " bne .Ldot_kernel_F10 \n" - - " b .Ldot_kernel_L999 \n" - - ".Ldot_kernel_S_BEGIN: \n" - " lsl "INC_X", "INC_X", #3 \n" - " lsl "INC_Y", "INC_Y", #3 \n" - " asr "J", "N", #2 \n" - " cmp "J", xzr \n" - " ble .Ldot_kernel_S1 \n" - - ".Ldot_kernel_S4: \n" - " ld1 "LD1VX", ["X"], "INC_X" \n" - " ld1 "LD1VY", ["Y"], "INC_Y" \n" - " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" - " ld1 "LD1VX", ["X"], "INC_X" \n" - " ld1 "LD1VY", ["Y"], "INC_Y" \n" - " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" - " ld1 "LD1VX", ["X"], "INC_X" \n" - " ld1 "LD1VY", ["Y"], "INC_Y" \n" - " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" - " ld1 "LD1VX", ["X"], "INC_X" \n" - " ld1 "LD1VY", ["Y"], "INC_Y" \n" - " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" - " subs "J", "J", #1 \n" - " bne .Ldot_kernel_S4 \n" - - ".Ldot_kernel_S1: \n" - " ands "J", "N", #3 \n" - " ble .Ldot_kernel_L999 \n" - - ".Ldot_kernel_S10: \n" - " ld1 "LD1VX", ["X"], "INC_X" \n" - " ld1 "LD1VY", ["Y"], "INC_Y" \n" - " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" - " subs "J", "J", #1 \n" - " bne .Ldot_kernel_S10 \n" - - ".Ldot_kernel_L999: \n" - " fmov %[DOT_], "DOTF" \n" - - : [DOT_] "=r" (dot) //%0 - : [N_] "r" (n), //%1 - [X_] "r" (x), //%2 - [INCX_] "r" (inc_x), //%3 - [Y_] "r" (y), //%4 - [INCY_] "r" (inc_y) //%5 - : "cc", - "memory", - "x0", "x1", "x2", "x3", "x4", "x5", - "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7" - ); - - return(dot); -} - -#if defined(SMP) -static int ddot_thread_function(BLASLONG n, BLASLONG dummy0, - BLASLONG dummy1, FLOAT dummy2, FLOAT *x, BLASLONG inc_x, FLOAT *y, - BLASLONG inc_y, FLOAT *result, BLASLONG dummy3) -{ - *result = ddot_compute(n, x, inc_x, y, inc_y); - - return 0; -} -#endif - -FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y) -{ -#if defined(SMP) - int nthreads; - FLOAT dummy_alpha; -#endif - FLOAT dot = 0.0; - -#if defined(SMP) - nthreads = num_cpu_avail(1); - - if (inc_x == 0 || inc_y == 0) - nthreads = 1; - - if (n <= 10000) - nthreads = 1; - - if (nthreads == 1) { - dot = ddot_compute(n, x, inc_x, y, inc_y); - } else { - int mode, i; - char result[MAX_CPU_NUMBER * sizeof(double) * 2]; - FLOAT *ptr; - - mode = BLAS_DOUBLE | BLAS_REAL; - - blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha, - x, inc_x, y, inc_y, result, 0, - ( void *)ddot_thread_function, nthreads); - - ptr = (FLOAT *)result; - for (i = 0; i < nthreads; i++) { - dot = dot + (*ptr); - ptr = (FLOAT *)(((char *)ptr) + sizeof(double) * 2); - } - } -#else - dot = ddot_compute(n, x, inc_x, y, inc_y); -#endif - - return dot; -} diff --git a/kernel/arm64/dot_thunderx2t99.c b/kernel/arm64/dot_thunderx2t99.c new file mode 100644 index 000000000..6d54fd805 --- /dev/null +++ b/kernel/arm64/dot_thunderx2t99.c @@ -0,0 +1,423 @@ +/*************************************************************************** +Copyright (c) 2017, 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. +*****************************************************************************/ + + +#include "common.h" + +#include + +#if !defined(DSDOT) +#define RETURN_TYPE FLOAT +#else +#define RETURN_TYPE double +#endif + +#define N "x0" /* vector length */ +#define X "x1" /* "X" vector address */ +#define INC_X "x2" /* "X" stride */ +#define Y "x3" /* "Y" vector address */ +#define INC_Y "x4" /* "Y" stride */ +#define J "x5" /* loop variable */ + +#if !defined(DOUBLE) +#if !defined(DSDOT) +#define REG0 "wzr" +#define DOTF "s0" +#define TMPX "s16" +#define TMPY "s24" +#define INC_SHIFT "2" +#define N_DIV_SHIFT "6" +#define N_REM_MASK "63" +#else +#define REG0 "xzr" +#define DOTF "d0" +#define TMPX "s16" +#define TMPX1 "d2" +#define TMPY "s24" +#define TMPY1 "d3" +#define INC_SHIFT "2" +#define N_DIV_SHIFT "4" +#define N_REM_MASK "15" +#endif +#else +#define REG0 "xzr" +#define DOTF "d0" +#define TMPX "d16" +#define TMPY "d24" +#define INC_SHIFT "3" +#define N_DIV_SHIFT "5" +#define N_REM_MASK "31" +#endif + +#if !defined(DOUBLE) + +#if !defined(DSDOT) +#define KERNEL_F1 \ + " ldr "TMPX", ["X"] \n" \ + " ldr "TMPY", ["Y"] \n" \ + " add "X", "X", "INC_X" \n" \ + " add "Y", "Y", "INC_Y" \n" \ + " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" + +#define KERNEL_F \ + " ldp q16, q17, ["X"] \n" \ + " ldp q24, q25, ["Y"] \n" \ + " ldp q18, q19, ["X", #32] \n" \ + " ldp q26, q27, ["Y", #32] \n" \ + " fmla v0.4s, v16.4s, v24.4s \n" \ + " fmla v1.4s, v17.4s, v25.4s \n" \ + " ldp q20, q21, ["X", #64] \n" \ + " ldp q28, q29, ["Y", #64] \n" \ + " fmla v2.4s, v18.4s, v26.4s \n" \ + " fmla v3.4s, v19.4s, v27.4s \n" \ + " ldp q22, q23, ["X", #96] \n" \ + " ldp q30, q31, ["Y", #96] \n" \ + " add "Y", "Y", #128 \n" \ + " add "X", "X", #128 \n" \ + " fmla v4.4s, v20.4s, v28.4s \n" \ + " fmla v5.4s, v21.4s, v29.4s \n" \ + " PRFM PLDL1KEEP, ["X", #896] \n" \ + " PRFM PLDL1KEEP, ["Y", #896] \n" \ + " PRFM PLDL1KEEP, ["X", #896+64] \n" \ + " PRFM PLDL1KEEP, ["Y", #896+64] \n" \ + " fmla v6.4s, v22.4s, v30.4s \n" \ + " fmla v7.4s, v23.4s, v31.4s \n" \ + " ldp q16, q17, ["X"] \n" \ + " ldp q24, q25, ["Y"] \n" \ + " ldp q18, q19, ["X", #32] \n" \ + " ldp q26, q27, ["Y", #32] \n" \ + " fmla v0.4s, v16.4s, v24.4s \n" \ + " fmla v1.4s, v17.4s, v25.4s \n" \ + " ldp q20, q21, ["X", #64] \n" \ + " ldp q28, q29, ["Y", #64] \n" \ + " fmla v2.4s, v18.4s, v26.4s \n" \ + " fmla v3.4s, v19.4s, v27.4s \n" \ + " ldp q22, q23, ["X", #96] \n" \ + " ldp q30, q31, ["Y", #96] \n" \ + " add "Y", "Y", #128 \n" \ + " add "X", "X", #128 \n" \ + " fmla v4.4s, v20.4s, v28.4s \n" \ + " fmla v5.4s, v21.4s, v29.4s \n" \ + " PRFM PLDL1KEEP, ["X", #896] \n" \ + " PRFM PLDL1KEEP, ["Y", #896] \n" \ + " PRFM PLDL1KEEP, ["X", #896+64] \n" \ + " PRFM PLDL1KEEP, ["Y", #896+64] \n" \ + " fmla v6.4s, v22.4s, v30.4s \n" \ + " fmla v7.4s, v23.4s, v31.4s \n" + +#define KERNEL_F_FINALIZE \ + " fadd v0.4s, v0.4s, v1.4s \n" \ + " fadd v2.4s, v2.4s, v3.4s \n" \ + " fadd v4.4s, v4.4s, v5.4s \n" \ + " fadd v6.4s, v6.4s, v7.4s \n" \ + " fadd v0.4s, v0.4s, v2.4s \n" \ + " fadd v4.4s, v4.4s, v6.4s \n" \ + " fadd v0.4s, v0.4s, v4.4s \n" \ + " faddp v0.4s, v0.4s, v0.4s \n" \ + " faddp v0.4s, v0.4s, v0.4s \n" + +#else /* !defined(DSDOT) */ +#define KERNEL_F1 \ + " ldr "TMPX", ["X"] \n" \ + " ldr "TMPY", ["Y"] \n" \ + " add "X", "X", "INC_X" \n" \ + " add "Y", "Y", "INC_Y" \n" \ + " fcvt "TMPX1", "TMPX" \n" \ + " fcvt "TMPY1", "TMPY" \n" \ + " fmul "TMPX1", "TMPX1", "TMPY1" \n" \ + " fadd "DOTF", "DOTF", "TMPX1" \n" + + +#define KERNEL_F \ + " ldp q18, q19, ["X"] \n" \ + " ldp q26, q27, ["Y"] \n" \ + " fcvtl v16.2d, v18.2s \n" \ + " fcvtl2 v17.2d, v18.4s \n" \ + " fcvtl v18.2d, v19.2s \n" \ + " fcvtl2 v19.2d, v19.4s \n" \ + " fcvtl v24.2d, v26.2s \n" \ + " fcvtl2 v25.2d, v26.4s \n" \ + " fcvtl v26.2d, v27.2s \n" \ + " fcvtl2 v27.2d, v27.4s \n" \ + " ldp q22, q23, ["X", #32] \n" \ + " ldp q30, q31, ["Y", #32] \n" \ + " fcvtl v20.2d, v22.2s \n" \ + " fcvtl2 v21.2d, v22.4s \n" \ + " fcvtl v22.2d, v23.2s \n" \ + " fcvtl2 v23.2d, v23.4s \n" \ + " fcvtl v28.2d, v30.2s \n" \ + " fcvtl2 v29.2d, v30.4s \n" \ + " fcvtl v30.2d, v31.2s \n" \ + " fcvtl2 v31.2d, v31.4s \n" \ + " PRFM PLDL1KEEP, ["X", #896] \n" \ + " PRFM PLDL1KEEP, ["Y", #896] \n" \ + " PRFM PLDL1KEEP, ["X", #896+64] \n" \ + " PRFM PLDL1KEEP, ["Y", #896+64] \n" \ + " fmla v0.2d, v16.2d, v24.2d \n" \ + " fmla v1.2d, v17.2d, v25.2d \n" \ + " fmla v2.2d, v18.2d, v26.2d \n" \ + " fmla v3.2d, v19.2d, v27.2d \n" \ + " add "Y", "Y", #64 \n" \ + " add "X", "X", #64 \n" \ + " fmla v4.2d, v20.2d, v28.2d \n" \ + " fmla v5.2d, v21.2d, v29.2d \n" \ + " fmla v6.2d, v22.2d, v30.2d \n" \ + " fmla v7.2d, v23.2d, v31.2d \n" + +#define KERNEL_F_FINALIZE \ + " fadd v0.2d, v0.2d, v1.2d \n" \ + " fadd v2.2d, v2.2d, v3.2d \n" \ + " fadd v4.2d, v4.2d, v5.2d \n" \ + " fadd v6.2d, v6.2d, v7.2d \n" \ + " fadd v0.2d, v0.2d, v2.2d \n" \ + " fadd v4.2d, v4.2d, v6.2d \n" \ + " fadd v0.2d, v0.2d, v4.2d \n" \ + " faddp "DOTF", v0.2d \n" +#endif /* !defined(DSDOT) */ + +#else /* !defined(DOUBLE) */ +#define KERNEL_F1 \ + " ldr "TMPX", ["X"] \n" \ + " ldr "TMPY", ["Y"] \n" \ + " add "X", "X", "INC_X" \n" \ + " add "Y", "Y", "INC_Y" \n" \ + " fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n" + +#define KERNEL_F \ + " ldp q16, q17, ["X"] \n" \ + " ldp q24, q25, ["Y"] \n" \ + " ldp q18, q19, ["X", #32] \n" \ + " ldp q26, q27, ["Y", #32] \n" \ + " fmla v0.2d, v16.2d, v24.2d \n" \ + " fmla v1.2d, v17.2d, v25.2d \n" \ + " ldp q20, q21, ["X", #64] \n" \ + " ldp q28, q29, ["Y", #64] \n" \ + " fmla v2.2d, v18.2d, v26.2d \n" \ + " fmla v3.2d, v19.2d, v27.2d \n" \ + " ldp q22, q23, ["X", #96] \n" \ + " ldp q30, q31, ["Y", #96] \n" \ + " add "Y", "Y", #128 \n" \ + " add "X", "X", #128 \n" \ + " fmla v4.2d, v20.2d, v28.2d \n" \ + " fmla v5.2d, v21.2d, v29.2d \n" \ + " PRFM PLDL1KEEP, ["X", #896] \n" \ + " PRFM PLDL1KEEP, ["Y", #896] \n" \ + " PRFM PLDL1KEEP, ["X", #896+64] \n" \ + " PRFM PLDL1KEEP, ["Y", #896+64] \n" \ + " fmla v6.2d, v22.2d, v30.2d \n" \ + " fmla v7.2d, v23.2d, v31.2d \n" \ + " ldp q16, q17, ["X"] \n" \ + " ldp q24, q25, ["Y"] \n" \ + " ldp q18, q19, ["X", #32] \n" \ + " ldp q26, q27, ["Y", #32] \n" \ + " fmla v0.2d, v16.2d, v24.2d \n" \ + " fmla v1.2d, v17.2d, v25.2d \n" \ + " ldp q20, q21, ["X", #64] \n" \ + " ldp q28, q29, ["Y", #64] \n" \ + " fmla v2.2d, v18.2d, v26.2d \n" \ + " fmla v3.2d, v19.2d, v27.2d \n" \ + " ldp q22, q23, ["X", #96] \n" \ + " ldp q30, q31, ["Y", #96] \n" \ + " add "Y", "Y", #128 \n" \ + " add "X", "X", #128 \n" \ + " fmla v4.2d, v20.2d, v28.2d \n" \ + " fmla v5.2d, v21.2d, v29.2d \n" \ + " PRFM PLDL1KEEP, ["X", #896] \n" \ + " PRFM PLDL1KEEP, ["Y", #896] \n" \ + " PRFM PLDL1KEEP, ["X", #896+64] \n" \ + " PRFM PLDL1KEEP, ["Y", #896+64] \n" \ + " fmla v6.2d, v22.2d, v30.2d \n" \ + " fmla v7.2d, v23.2d, v31.2d \n" + +#define KERNEL_F_FINALIZE \ + " fadd v0.2d, v0.2d, v1.2d \n" \ + " fadd v2.2d, v2.2d, v3.2d \n" \ + " fadd v4.2d, v4.2d, v5.2d \n" \ + " fadd v6.2d, v6.2d, v7.2d \n" \ + " fadd v0.2d, v0.2d, v2.2d \n" \ + " fadd v4.2d, v4.2d, v6.2d \n" \ + " fadd v0.2d, v0.2d, v4.2d \n" \ + " faddp "DOTF", v0.2d \n" +#endif /* !defined(DOUBLE) */ + +#if defined(SMP) +extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n, + BLASLONG k, void *alpha, void *a, BLASLONG lda, void *b, BLASLONG ldb, + void *c, BLASLONG ldc, int (*function)(), int nthreads); +#endif + +static RETURN_TYPE dot_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y) +{ + RETURN_TYPE dot = 0.0 ; + + if ( n < 0 ) return dot; + + __asm__ __volatile__ ( + " mov "N", %[N_] \n" + " mov "X", %[X_] \n" + " mov "INC_X", %[INCX_] \n" + " mov "Y", %[Y_] \n" + " mov "INC_Y", %[INCY_] \n" + " fmov "DOTF", "REG0" \n" + " fmov d1, xzr \n" + " fmov d2, xzr \n" + " fmov d3, xzr \n" + " fmov d4, xzr \n" + " fmov d5, xzr \n" + " fmov d6, xzr \n" + " fmov d7, xzr \n" + " cmp "N", xzr \n" + " ble .Ldot_kernel_L999 \n" + " cmp "INC_X", #1 \n" + " bne .Ldot_kernel_S_BEGIN \n" + " cmp "INC_Y", #1 \n" + " bne .Ldot_kernel_S_BEGIN \n" + + ".Ldot_kernel_F_BEGIN: \n" + " lsl "INC_X", "INC_X", "INC_SHIFT" \n" + " lsl "INC_Y", "INC_Y", "INC_SHIFT" \n" + " asr "J", "N", #"N_DIV_SHIFT" \n" + " cmp "J", xzr \n" + " beq .Ldot_kernel_F1 \n" + + " .align 5 \n" + ".Ldot_kernel_F: \n" + " "KERNEL_F" \n" + " subs "J", "J", #1 \n" + " bne .Ldot_kernel_F \n" + " "KERNEL_F_FINALIZE" \n" + + ".Ldot_kernel_F1: \n" + " ands "J", "N", #"N_REM_MASK" \n" + " ble .Ldot_kernel_L999 \n" + + ".Ldot_kernel_F10: \n" + " "KERNEL_F1" \n" + " subs "J", "J", #1 \n" + " bne .Ldot_kernel_F10 \n" + " b .Ldot_kernel_L999 \n" + + ".Ldot_kernel_S_BEGIN: \n" + " lsl "INC_X", "INC_X", "INC_SHIFT" \n" + " lsl "INC_Y", "INC_Y", "INC_SHIFT" \n" + " asr "J", "N", #2 \n" + " cmp "J", xzr \n" + " ble .Ldot_kernel_S1 \n" + + ".Ldot_kernel_S4: \n" + " "KERNEL_F1" \n" + " "KERNEL_F1" \n" + " "KERNEL_F1" \n" + " "KERNEL_F1" \n" + " subs "J", "J", #1 \n" + " bne .Ldot_kernel_S4 \n" + + ".Ldot_kernel_S1: \n" + " ands "J", "N", #3 \n" + " ble .Ldot_kernel_L999 \n" + + ".Ldot_kernel_S10: \n" + " "KERNEL_F1" \n" + " subs "J", "J", #1 \n" + " bne .Ldot_kernel_S10 \n" + + ".Ldot_kernel_L999: \n" + " str "DOTF", [%[DOT_]] \n" + + : + : [DOT_] "r" (&dot), //%0 + [N_] "r" (n), //%1 + [X_] "r" (x), //%2 + [INCX_] "r" (inc_x), //%3 + [Y_] "r" (y), //%4 + [INCY_] "r" (inc_y) //%5 + : "cc", + "memory", + "x0", "x1", "x2", "x3", "x4", "x5", + "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7" + ); + + return dot; +} + +#if defined(SMP) +static int dot_thread_function(BLASLONG n, BLASLONG dummy0, + BLASLONG dummy1, FLOAT dummy2, FLOAT *x, BLASLONG inc_x, FLOAT *y, + BLASLONG inc_y, FLOAT *result, BLASLONG dummy3) +{ + *(RETURN_TYPE *)result = dot_compute(n, x, inc_x, y, inc_y); + + return 0; +} +#endif + +RETURN_TYPE CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y) +{ +#if defined(SMP) + int nthreads; + FLOAT dummy_alpha; +#endif + RETURN_TYPE dot = 0.0; + +#if defined(SMP) + nthreads = num_cpu_avail(1); + + if (inc_x == 0 || inc_y == 0) + nthreads = 1; + + if (n <= 10000) + nthreads = 1; + + if (nthreads == 1) { + dot = dot_compute(n, x, inc_x, y, inc_y); + } else { + int mode, i; + char result[MAX_CPU_NUMBER * sizeof(double) * 2]; + RETURN_TYPE *ptr; + +#if !defined(DOUBLE) + mode = BLAS_SINGLE | BLAS_REAL; +#else + mode = BLAS_DOUBLE | BLAS_REAL; +#endif + + blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha, + x, inc_x, y, inc_y, result, 0, + ( void *)dot_thread_function, nthreads); + + ptr = (RETURN_TYPE *)result; + for (i = 0; i < nthreads; i++) { + dot = dot + (*ptr); + ptr = (RETURN_TYPE *)(((char *)ptr) + sizeof(double) * 2); + } + } +#else + dot = dot_compute(n, x, inc_x, y, inc_y); +#endif + + return dot; +}