/*************************************************************************** Copyright (c) 2013, 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. *****************************************************************************/ /************************************************************************************** * 2013/11/23 Saar * BLASTEST : OK * CTEST : OK * TEST : OK * * * 2013/11/02 Saar * UNROLL_N 4 * UNROLL_M 4 * DGEMM_P 128 * DGEMM_Q 240 * DGEMM_R 12288 * A_PRE 128 * B_PRE 128 * C_PRE 32 * * Performance on Odroid U2: * * 3072x3072 1 Core: 2.62 GFLOPS ATLAS: 2.69 GFLOPS * 3072x3072 2 Cores: 5.23 GFLOPS ATLAS: 5.27 GFLOPS * 3072x3072 3 Cores: 7.78 GFLOPS ATLAS: 7.87 GFLOPS * 3072x3072 4 Cores: 10.10 GFLOPS ATLAS: 9.98 GFLOPS **************************************************************************************/ #define ASSEMBLER #include "common.h" #define STACKSIZE 256 #define OLD_M r0 #define OLD_N r1 #define OLD_K r2 #define OLD_A r3 #define OLD_ALPHA s0 /****************************************************** * [fp, #-128] - [fp, #-64] is reserved * for store and restore of floating point * registers *******************************************************/ #define LDC [fp, #-252 ] #define M [fp, #-256 ] #define N [fp, #-260 ] #define K [fp, #-264 ] #define A [fp, #-268 ] #define FP_ZERO [fp, #-240] #define FP_ZERO_0 [fp, #-240] #define FP_ZERO_1 [fp, #-236] #define ALPHA [fp, #-280] #define B [fp, #4 ] #define C [fp, #8 ] #define OLD_LDC [fp, #12 ] #define I r0 #define J r1 #define L r2 #define AO r5 #define BO r6 #define CO1 r8 #define CO2 r9 #define K1 r7 #define BC r12 #define A_PRE 128 #define B_PRE 128 #define C_PRE 32 /************************************************************************************** * Macro definitions **************************************************************************************/ .macro INIT4x4 flds s16, FP_ZERO vmov.f32 s17, s16 vmov.f32 s18, s16 vmov.f32 s19, s16 vmov.f32 s20, s16 vmov.f32 s21, s16 vmov.f32 s22, s16 vmov.f32 s23, s16 vmov.f32 s24, s16 vmov.f32 s25, s16 vmov.f32 s26, s16 vmov.f32 s27, s16 vmov.f32 s28, s16 vmov.f32 s29, s16 vmov.f32 s30, s16 vmov.f32 s31, s16 .endm .macro KERNEL4x4_I pld [ AO , #A_PRE ] fldmias AO!, { s0 - s1 } pld [ BO , #B_PRE ] fldmias BO!, { s8 - s9 } fmuls s16 , s0, s8 fldmias AO!, { s2 - s3 } fmuls s17 , s1, s8 fmuls s18 , s2, s8 fldmias BO!, { s10 - s11 } fmuls s19 , s3, s8 fmuls s20 , s0, s9 fldmias AO!, { s4 - s5 } fmuls s21 , s1, s9 fmuls s22 , s2, s9 fldmias AO!, { s6 - s7 } fmuls s23 , s3, s9 fmuls s24 , s0, s10 fldmias BO!, { s12 - s13 } fmuls s25 , s1, s10 fmuls s26 , s2, s10 fldmias BO!, { s14 - s15 } fmuls s27 , s3, s10 fmuls s28 , s0, s11 fmuls s29 , s1, s11 fmuls s30 , s2, s11 fmuls s31 , s3, s11 .endm .macro KERNEL4x4_M2 pld [ AO , #A_PRE ] fmacs s16 , s4, s12 fmacs s17 , s5, s12 fldmias AO!, { s0 - s3 } fmacs s18 , s6, s12 pld [ BO , #B_PRE ] fmacs s19 , s7, s12 fmacs s20 , s4, s13 fldmias BO!, { s8 - s11 } fmacs s21 , s5, s13 fmacs s22 , s6, s13 //fldmias AO!, { s2 - s3 } fmacs s23 , s7, s13 fmacs s24 , s4, s14 //fldmias BO!, { s10 - s11 } fmacs s25 , s5, s14 fmacs s26 , s6, s14 fmacs s27 , s7, s14 fmacs s28 , s4, s15 fmacs s29 , s5, s15 fmacs s30 , s6, s15 fmacs s31 , s7, s15 .endm .macro KERNEL4x4_M1 fmacs s16 , s0, s8 fldmias AO!, { s4 - s7 } fmacs s17 , s1, s8 fmacs s18 , s2, s8 fldmias BO!, { s12 - s15 } //fldmias AO!, { s6 - s7 } fmacs s19 , s3, s8 fmacs s20 , s0, s9 fmacs s21 , s1, s9 fmacs s22 , s2, s9 //fldmias BO!, { s14 - s15 } fmacs s23 , s3, s9 fmacs s24 , s0, s10 fmacs s25 , s1, s10 fmacs s26 , s2, s10 fmacs s27 , s3, s10 fmacs s28 , s0, s11 fmacs s29 , s1, s11 fmacs s30 , s2, s11 fmacs s31 , s3, s11 .endm .macro KERNEL4x4_E fmacs s16 , s4, s12 fmacs s17 , s5, s12 fmacs s18 , s6, s12 fmacs s19 , s7, s12 fmacs s20 , s4, s13 fmacs s21 , s5, s13 fmacs s22 , s6, s13 fmacs s23 , s7, s13 fmacs s24 , s4, s14 fmacs s25 , s5, s14 fmacs s26 , s6, s14 fmacs s27 , s7, s14 fmacs s28 , s4, s15 fmacs s29 , s5, s15 fmacs s30 , s6, s15 fmacs s31 , s7, s15 .endm .macro KERNEL4x4_SUB flds s8 , [ BO ] flds s0 , [ AO ] flds s1 , [ AO, #4 ] fmacs s16 , s0, s8 flds s2 , [ AO, #8 ] fmacs s17 , s1, s8 flds s3 , [ AO, #12 ] fmacs s18 , s2, s8 flds s9 , [ BO, #4 ] fmacs s19 , s3, s8 flds s10, [ BO, #8 ] fmacs s20 , s0, s9 flds s11, [ BO, #12 ] fmacs s21 , s1, s9 fmacs s22 , s2, s9 fmacs s23 , s3, s9 fmacs s24 , s0, s10 fmacs s25 , s1, s10 fmacs s26 , s2, s10 fmacs s27 , s3, s10 fmacs s28 , s0, s11 fmacs s29 , s1, s11 add AO , AO, #16 fmacs s30 , s2, s11 add BO , BO, #16 fmacs s31 , s3, s11 .endm .macro SAVE4x4 ldr r3 , LDC add CO2 , CO1, r3 flds s0, ALPHA add r4 , CO2, r3 fldmias CO1, { s8 - s11 } fmacs s8 , s0 , s16 flds s12, [CO2] fmacs s9 , s0 , s17 flds s13, [CO2, #4 ] fmacs s10, s0 , s18 flds s14, [CO2, #8 ] fmacs s11, s0 , s19 flds s15, [CO2, #12 ] fmacs s12, s0 , s20 fsts s8 , [CO1] fmacs s13, s0 , s21 fsts s9 , [CO1, #4 ] fmacs s14, s0 , s22 fsts s10, [CO1, #8 ] fmacs s15, s0 , s23 fsts s11, [CO1, #12 ] pld [ CO1 , #C_PRE ] fldmias r4, { s8 - s11 } fmacs s8 , s0 , s24 fsts s12, [CO2] fmacs s9 , s0 , s25 fsts s13, [CO2, #4 ] fmacs s10, s0 , s26 fsts s14, [CO2, #8 ] fmacs s11, s0 , s27 fsts s15, [CO2, #12 ] pld [ CO2 , #C_PRE ] add CO2, r4 , r3 fldmias CO2, { s12 - s15 } fsts s8 , [r4 ] fmacs s12, s0 , s28 fsts s9 , [r4 , #4 ] fmacs s13, s0 , s29 fsts s10, [r4 , #8 ] fmacs s14, s0 , s30 fsts s11, [r4 , #12 ] fmacs s15, s0 , s31 pld [ r4 , #C_PRE ] fstmias CO2, { s12 - s15 } pld [ CO2 , #C_PRE ] add CO1, CO1, #16 .endm /******************************************************************************/ .macro INIT2x4 flds s16, FP_ZERO vmov.f32 s17, s16 vmov.f32 s20, s16 vmov.f32 s21, s16 vmov.f32 s24, s16 vmov.f32 s25, s16 vmov.f32 s28, s16 vmov.f32 s29, s16 .endm .macro KERNEL2x4_SUB flds s8 , [ BO ] flds s9 , [ BO, #4 ] flds s10, [ BO, #8 ] flds s11, [ BO, #12 ] flds s0 , [ AO ] flds s1 , [ AO, #4 ] fmacs s16 , s0, s8 fmacs s17 , s1, s8 fmacs s20 , s0, s9 fmacs s21 , s1, s9 fmacs s24 , s0, s10 fmacs s25 , s1, s10 fmacs s28 , s0, s11 fmacs s29 , s1, s11 add AO , AO, #8 add BO , BO, #16 .endm .macro SAVE2x4 ldr r3 , LDC add CO2 , CO1, r3 add r4 , CO2, r3 flds s0, ALPHA flds s8 , [CO1] flds s9 , [CO1, #4 ] fmacs s8 , s0 , s16 fmacs s9 , s0 , s17 fsts s8 , [CO1] fsts s9 , [CO1, #4 ] flds s12, [CO2] flds s13, [CO2, #4 ] fmacs s12, s0 , s20 fmacs s13, s0 , s21 fsts s12, [CO2] fsts s13, [CO2, #4 ] flds s8 , [r4 ] flds s9 , [r4 , #4 ] fmacs s8 , s0 , s24 fmacs s9 , s0 , s25 fsts s8 , [r4 ] fsts s9 , [r4 , #4 ] add CO2, r4 , r3 flds s12, [CO2] flds s13, [CO2, #4 ] fmacs s12, s0 , s28 fmacs s13, s0 , s29 fsts s12, [CO2] fsts s13, [CO2, #4 ] add CO1, CO1, #8 .endm /******************************************************************************/ .macro INIT1x4 flds s16, FP_ZERO vmov.f32 s20, s16 vmov.f32 s24, s16 vmov.f32 s28, s16 .endm .macro KERNEL1x4_SUB flds s8 , [ BO ] flds s9 , [ BO, #4 ] flds s10, [ BO, #8 ] flds s11, [ BO, #12 ] flds s0 , [ AO ] fmacs s16 , s0, s8 fmacs s20 , s0, s9 fmacs s24 , s0, s10 fmacs s28 , s0, s11 add AO , AO, #4 add BO , BO, #16 .endm .macro SAVE1x4 ldr r3 , LDC add CO2 , CO1, r3 add r4 , CO2, r3 flds s0, ALPHA flds s8 , [CO1] fmacs s8 , s0 , s16 fsts s8 , [CO1] flds s12, [CO2] fmacs s12, s0 , s20 fsts s12, [CO2] flds s8 , [r4 ] fmacs s8 , s0 , s24 fsts s8 , [r4 ] add CO2, r4 , r3 flds s12, [CO2] fmacs s12, s0 , s28 fsts s12, [CO2] add CO1, CO1, #4 .endm /******************************************************************************/ /******************************************************************************/ .macro INIT4x2 flds s16, FP_ZERO vmov.f32 s17, s16 vmov.f32 s18, s16 vmov.f32 s19, s16 vmov.f32 s20, s16 vmov.f32 s21, s16 vmov.f32 s22, s16 vmov.f32 s23, s16 .endm .macro KERNEL4x2_SUB flds s8 , [ BO ] flds s9 , [ BO, #4 ] flds s0 , [ AO ] flds s1 , [ AO, #4 ] flds s2 , [ AO, #8 ] flds s3 , [ AO, #12 ] fmacs s16 , s0, s8 fmacs s17 , s1, s8 fmacs s18 , s2, s8 fmacs s19 , s3, s8 fmacs s20 , s0, s9 fmacs s21 , s1, s9 fmacs s22 , s2, s9 fmacs s23 , s3, s9 add AO , AO, #16 add BO , BO, #8 .endm .macro SAVE4x2 ldr r3 , LDC add CO2 , CO1, r3 flds s0, ALPHA flds s8 , [CO1] flds s9 , [CO1, #4 ] flds s10, [CO1, #8 ] flds s11, [CO1, #12 ] fmacs s8 , s0 , s16 fmacs s9 , s0 , s17 fmacs s10, s0 , s18 fmacs s11, s0 , s19 fsts s8 , [CO1] fsts s9 , [CO1, #4 ] fsts s10, [CO1, #8 ] fsts s11, [CO1, #12 ] flds s12, [CO2] flds s13, [CO2, #4 ] flds s14, [CO2, #8 ] flds s15, [CO2, #12 ] fmacs s12, s0 , s20 fmacs s13, s0 , s21 fmacs s14, s0 , s22 fmacs s15, s0 , s23 fsts s12, [CO2] fsts s13, [CO2, #4 ] fsts s14, [CO2, #8 ] fsts s15, [CO2, #12 ] add CO1, CO1, #16 .endm /******************************************************************************/ .macro INIT2x2 flds s16, FP_ZERO vmov.f32 s17, s16 vmov.f32 s20, s16 vmov.f32 s21, s16 .endm .macro KERNEL2x2_SUB flds s8 , [ BO ] flds s9 , [ BO, #4 ] flds s0 , [ AO ] flds s1 , [ AO, #4 ] fmacs s16 , s0, s8 fmacs s17 , s1, s8 fmacs s20 , s0, s9 fmacs s21 , s1, s9 add AO , AO, #8 add BO , BO, #8 .endm .macro SAVE2x2 ldr r3 , LDC add CO2 , CO1, r3 flds s0, ALPHA flds s8 , [CO1] flds s9 , [CO1, #4 ] fmacs s8 , s0 , s16 fmacs s9 , s0 , s17 fsts s8 , [CO1] fsts s9 , [CO1, #4 ] flds s12, [CO2] flds s13, [CO2, #4 ] fmacs s12, s0 , s20 fmacs s13, s0 , s21 fsts s12, [CO2] fsts s13, [CO2, #4 ] add CO1, CO1, #8 .endm /******************************************************************************/ .macro INIT1x2 flds s16, FP_ZERO vmov.f32 s20, s16 .endm .macro KERNEL1x2_SUB flds s8 , [ BO ] flds s9 , [ BO, #4 ] flds s0 , [ AO ] fmacs s16 , s0, s8 fmacs s20 , s0, s9 add AO , AO, #4 add BO , BO, #8 .endm .macro SAVE1x2 ldr r3 , LDC add CO2 , CO1, r3 flds s0, ALPHA flds s8 , [CO1] fmacs s8 , s0 , s16 fsts s8 , [CO1] flds s12, [CO2] fmacs s12, s0 , s20 fsts s12, [CO2] add CO1, CO1, #4 .endm /******************************************************************************/ /******************************************************************************/ .macro INIT4x1 flds s16, FP_ZERO vmov.f32 s17, s16 vmov.f32 s18, s16 vmov.f32 s19, s16 .endm .macro KERNEL4x1_SUB flds s8 , [ BO ] flds s0 , [ AO ] flds s1 , [ AO, #4 ] flds s2 , [ AO, #8 ] flds s3 , [ AO, #12 ] fmacs s16 , s0, s8 fmacs s17 , s1, s8 fmacs s18 , s2, s8 fmacs s19 , s3, s8 add AO , AO, #16 add BO , BO, #4 .endm .macro SAVE4x1 flds s0, ALPHA flds s8 , [CO1] flds s9 , [CO1, #4 ] flds s10, [CO1, #8 ] flds s11, [CO1, #12 ] fmacs s8 , s0 , s16 fmacs s9 , s0 , s17 fmacs s10, s0 , s18 fmacs s11, s0 , s19 fsts s8 , [CO1] fsts s9 , [CO1, #4 ] fsts s10, [CO1, #8 ] fsts s11, [CO1, #12 ] add CO1, CO1, #16 .endm /******************************************************************************/ .macro INIT2x1 flds s16, FP_ZERO vmov.f32 s17, s16 .endm .macro KERNEL2x1_SUB flds s8 , [ BO ] flds s0 , [ AO ] flds s1 , [ AO, #4 ] fmacs s16 , s0, s8 fmacs s17 , s1, s8 add AO , AO, #8 add BO , BO, #4 .endm .macro SAVE2x1 flds s0, ALPHA flds s8 , [CO1] flds s9 , [CO1, #4 ] fmacs s8 , s0 , s16 fmacs s9 , s0 , s17 fsts s8 , [CO1] fsts s9 , [CO1, #4 ] add CO1, CO1, #8 .endm /******************************************************************************/ .macro INIT1x1 flds s16, FP_ZERO .endm .macro KERNEL1x1_SUB flds s8 , [ BO ] flds s0 , [ AO ] fmacs s16 , s0, s8 add AO , AO, #4 add BO , BO, #4 .endm .macro SAVE1x1 flds s0, ALPHA flds s8 , [CO1] fmacs s8 , s0 , s16 fsts s8 , [CO1] add CO1, CO1, #4 .endm /************************************************************************************** * End of macro definitions **************************************************************************************/ PROLOGUE .align 5 push {r4 - r9, fp} add fp, sp, #24 sub sp, sp, #STACKSIZE // reserve stack str OLD_M, M str OLD_N, N str OLD_K, K str OLD_A, A vstr OLD_ALPHA, ALPHA sub r3, fp, #128 vstm r3, { s8 - s31} // store floating point registers movs r4, #0 str r4, FP_ZERO str r4, FP_ZERO_1 ldr r3, OLD_LDC lsl r3, r3, #2 // ldc = ldc * 4 str r3, LDC ldr K1, K ldr BC, B ldr J, N asrs J, J, #2 // J = J / 4 ble sgemm_kernel_L2_BEGIN sgemm_kernel_L4_BEGIN: ldr CO1, C // CO1 = C ldr r4 , LDC lsl r4 , r4 , #2 // LDC * 4 add r3 , r4, CO1 str r3 , C // store C ldr AO, A // AO = A pld [AO , #A_PRE-64] pld [AO , #A_PRE-32] sgemm_kernel_L4_M4_BEGIN: ldr I, M asrs I, I, #2 // I = I / 4 ble sgemm_kernel_L4_M2_BEGIN sgemm_kernel_L4_M4_20: mov BO, BC asrs L , K1, #1 // L = L / 8 cmp L , #2 blt sgemm_kernel_L4_M4_32 KERNEL4x4_I KERNEL4x4_M2 subs L, L, #2 ble sgemm_kernel_L4_M4_22a .align 5 sgemm_kernel_L4_M4_22: KERNEL4x4_M1 KERNEL4x4_M2 subs L, L, #1 bgt sgemm_kernel_L4_M4_22 sgemm_kernel_L4_M4_22a: KERNEL4x4_M1 KERNEL4x4_E b sgemm_kernel_L4_M4_44 sgemm_kernel_L4_M4_32: tst L, #1 ble sgemm_kernel_L4_M4_40 KERNEL4x4_I KERNEL4x4_E b sgemm_kernel_L4_M4_44 sgemm_kernel_L4_M4_40: INIT4x4 sgemm_kernel_L4_M4_44: ands L , K1, #1 // L = L % 8 ble sgemm_kernel_L4_M4_100 sgemm_kernel_L4_M4_46: KERNEL4x4_SUB subs L, L, #1 bne sgemm_kernel_L4_M4_46 sgemm_kernel_L4_M4_100: SAVE4x4 sgemm_kernel_L4_M4_END: subs I, I, #1 bne sgemm_kernel_L4_M4_20 sgemm_kernel_L4_M2_BEGIN: ldr I, M tst I , #3 ble sgemm_kernel_L4_END tst I, #2 // I = I / 2 ble sgemm_kernel_L4_M1_BEGIN sgemm_kernel_L4_M2_20: INIT2x4 mov BO, BC asrs L , K1, #3 // L = L / 8 ble sgemm_kernel_L4_M2_40 sgemm_kernel_L4_M2_22: KERNEL2x4_SUB KERNEL2x4_SUB KERNEL2x4_SUB KERNEL2x4_SUB KERNEL2x4_SUB KERNEL2x4_SUB KERNEL2x4_SUB KERNEL2x4_SUB subs L, L, #1 bgt sgemm_kernel_L4_M2_22 sgemm_kernel_L4_M2_40: ands L , K1, #7 // L = L % 8 ble sgemm_kernel_L4_M2_100 sgemm_kernel_L4_M2_42: KERNEL2x4_SUB subs L, L, #1 bgt sgemm_kernel_L4_M2_42 sgemm_kernel_L4_M2_100: SAVE2x4 sgemm_kernel_L4_M2_END: sgemm_kernel_L4_M1_BEGIN: tst I, #1 // I = I % 2 ble sgemm_kernel_L4_END sgemm_kernel_L4_M1_20: INIT1x4 mov BO, BC asrs L , K1, #3 // L = L / 8 ble sgemm_kernel_L4_M1_40 sgemm_kernel_L4_M1_22: KERNEL1x4_SUB KERNEL1x4_SUB KERNEL1x4_SUB KERNEL1x4_SUB KERNEL1x4_SUB KERNEL1x4_SUB KERNEL1x4_SUB KERNEL1x4_SUB subs L, L, #1 bgt sgemm_kernel_L4_M1_22 sgemm_kernel_L4_M1_40: ands L , K1, #7 // L = L % 8 ble sgemm_kernel_L4_M1_100 sgemm_kernel_L4_M1_42: KERNEL1x4_SUB subs L, L, #1 bgt sgemm_kernel_L4_M1_42 sgemm_kernel_L4_M1_100: SAVE1x4 sgemm_kernel_L4_END: mov r3, BC mov r4, K1 lsl r4, r4, #4 // k * 4 * 4 add r3, r3, r4 // B = B + K * 4 * 4 mov BC, r3 subs J , #1 // j-- bgt sgemm_kernel_L4_BEGIN /*********************************************************************************************/ sgemm_kernel_L2_BEGIN: ldr J , N tst J , #3 ble sgemm_kernel_L999 tst J , #2 ble sgemm_kernel_L1_BEGIN ldr CO1, C // CO1 = C ldr r4 , LDC lsl r4 , r4 , #1 // LDC * 2 add r3 , r4, CO1 str r3 , C // store C ldr AO, A // AO = A //pld [AO , #A_PRE-96] //pld [AO , #A_PRE-64] //pld [AO , #A_PRE-32] sgemm_kernel_L2_M4_BEGIN: ldr I, M asrs I, I, #2 // I = I / 4 ble sgemm_kernel_L2_M2_BEGIN sgemm_kernel_L2_M4_20: INIT4x2 mov BO, BC asrs L , K1, #3 // L = L / 8 ble sgemm_kernel_L2_M4_40 .align 5 sgemm_kernel_L2_M4_22: KERNEL4x2_SUB KERNEL4x2_SUB KERNEL4x2_SUB KERNEL4x2_SUB KERNEL4x2_SUB KERNEL4x2_SUB KERNEL4x2_SUB KERNEL4x2_SUB subs L, L, #1 bgt sgemm_kernel_L2_M4_22 sgemm_kernel_L2_M4_40: ands L , K1, #7 // L = L % 8 ble sgemm_kernel_L2_M4_100 sgemm_kernel_L2_M4_42: KERNEL4x2_SUB subs L, L, #1 bgt sgemm_kernel_L2_M4_42 sgemm_kernel_L2_M4_100: SAVE4x2 sgemm_kernel_L2_M4_END: subs I, I, #1 bgt sgemm_kernel_L2_M4_20 sgemm_kernel_L2_M2_BEGIN: ldr I, M tst I , #3 ble sgemm_kernel_L2_END tst I, #2 // I = I / 2 ble sgemm_kernel_L2_M1_BEGIN sgemm_kernel_L2_M2_20: INIT2x2 mov BO, BC asrs L , K1, #3 // L = L / 8 ble sgemm_kernel_L2_M2_40 sgemm_kernel_L2_M2_22: KERNEL2x2_SUB KERNEL2x2_SUB KERNEL2x2_SUB KERNEL2x2_SUB KERNEL2x2_SUB KERNEL2x2_SUB KERNEL2x2_SUB KERNEL2x2_SUB subs L, L, #1 bgt sgemm_kernel_L2_M2_22 sgemm_kernel_L2_M2_40: ands L , K1, #7 // L = L % 8 ble sgemm_kernel_L2_M2_100 sgemm_kernel_L2_M2_42: KERNEL2x2_SUB subs L, L, #1 bgt sgemm_kernel_L2_M2_42 sgemm_kernel_L2_M2_100: SAVE2x2 sgemm_kernel_L2_M2_END: sgemm_kernel_L2_M1_BEGIN: tst I, #1 // I = I % 2 ble sgemm_kernel_L2_END sgemm_kernel_L2_M1_20: INIT1x2 mov BO, BC asrs L , K1, #3 // L = L / 8 ble sgemm_kernel_L2_M1_40 sgemm_kernel_L2_M1_22: KERNEL1x2_SUB KERNEL1x2_SUB KERNEL1x2_SUB KERNEL1x2_SUB KERNEL1x2_SUB KERNEL1x2_SUB KERNEL1x2_SUB KERNEL1x2_SUB subs L, L, #1 bgt sgemm_kernel_L2_M1_22 sgemm_kernel_L2_M1_40: ands L , K1, #7 // L = L % 8 ble sgemm_kernel_L2_M1_100 sgemm_kernel_L2_M1_42: KERNEL1x2_SUB subs L, L, #1 bgt sgemm_kernel_L2_M1_42 sgemm_kernel_L2_M1_100: SAVE1x2 sgemm_kernel_L2_END: mov r3, BC mov r4, K1 lsl r4, r4, #3 // k * 2 * 4 add r3, r3, r4 // B = B + K * 2 * 4 mov BC, r3 /*********************************************************************************************/ sgemm_kernel_L1_BEGIN: ldr J , N tst J , #1 ble sgemm_kernel_L999 ldr CO1, C // CO1 = C ldr r4 , LDC add r3 , r4, CO1 str r3 , C // store C ldr AO, A // AO = A //pld [AO , #A_PRE-96] //pld [AO , #A_PRE-64] //pld [AO , #A_PRE-32] sgemm_kernel_L1_M4_BEGIN: ldr I, M asrs I, I, #2 // I = I / 4 ble sgemm_kernel_L1_M2_BEGIN sgemm_kernel_L1_M4_20: INIT4x1 mov BO, BC asrs L , K1, #3 // L = L / 8 ble sgemm_kernel_L1_M4_40 .align 5 sgemm_kernel_L1_M4_22: KERNEL4x1_SUB KERNEL4x1_SUB KERNEL4x1_SUB KERNEL4x1_SUB KERNEL4x1_SUB KERNEL4x1_SUB KERNEL4x1_SUB KERNEL4x1_SUB subs L, L, #1 bgt sgemm_kernel_L1_M4_22 sgemm_kernel_L1_M4_40: ands L , K1, #7 // L = L % 8 ble sgemm_kernel_L1_M4_100 sgemm_kernel_L1_M4_42: KERNEL4x1_SUB subs L, L, #1 bgt sgemm_kernel_L1_M4_42 sgemm_kernel_L1_M4_100: SAVE4x1 sgemm_kernel_L1_M4_END: subs I, I, #1 bgt sgemm_kernel_L1_M4_20 sgemm_kernel_L1_M2_BEGIN: ldr I, M tst I , #3 ble sgemm_kernel_L1_END tst I, #2 // I = I / 2 ble sgemm_kernel_L1_M1_BEGIN sgemm_kernel_L1_M2_20: INIT2x1 mov BO, BC asrs L , K1, #3 // L = L / 8 ble sgemm_kernel_L1_M2_40 sgemm_kernel_L1_M2_22: KERNEL2x1_SUB KERNEL2x1_SUB KERNEL2x1_SUB KERNEL2x1_SUB KERNEL2x1_SUB KERNEL2x1_SUB KERNEL2x1_SUB KERNEL2x1_SUB subs L, L, #1 bgt sgemm_kernel_L1_M2_22 sgemm_kernel_L1_M2_40: ands L , K1, #7 // L = L % 8 ble sgemm_kernel_L1_M2_100 sgemm_kernel_L1_M2_42: KERNEL2x1_SUB subs L, L, #1 bgt sgemm_kernel_L1_M2_42 sgemm_kernel_L1_M2_100: SAVE2x1 sgemm_kernel_L1_M2_END: sgemm_kernel_L1_M1_BEGIN: tst I, #1 // I = I % 2 ble sgemm_kernel_L1_END sgemm_kernel_L1_M1_20: INIT1x1 mov BO, BC asrs L , K1, #3 // L = L / 8 ble sgemm_kernel_L1_M1_40 sgemm_kernel_L1_M1_22: KERNEL1x1_SUB KERNEL1x1_SUB KERNEL1x1_SUB KERNEL1x1_SUB KERNEL1x1_SUB KERNEL1x1_SUB KERNEL1x1_SUB KERNEL1x1_SUB subs L, L, #1 bgt sgemm_kernel_L1_M1_22 sgemm_kernel_L1_M1_40: ands L , K1, #7 // L = L % 8 ble sgemm_kernel_L1_M1_100 sgemm_kernel_L1_M1_42: KERNEL1x1_SUB subs L, L, #1 bgt sgemm_kernel_L1_M1_42 sgemm_kernel_L1_M1_100: SAVE1x1 sgemm_kernel_L1_END: sgemm_kernel_L999: sub r3, fp, #128 vldm r3, { s8 - s31} // restore floating point registers movs r0, #0 // set return value sub sp, fp, #24 pop {r4 - r9, fp} bx lr EPILOGUE