| ///****************************************************************************** |
| // * |
| // * Copyright (C) 2018 The Android Open Source Project |
| // * |
| // * Licensed under the Apache License, Version 2.0 (the "License"); |
| // * you may not use this file except in compliance with the License. |
| // * You may obtain a copy of the License at: |
| // * |
| // * http://www.apache.org/licenses/LICENSE-2.0 |
| // * |
| // * Unless required by applicable law or agreed to in writing, software |
| // * distributed under the License is distributed on an "AS IS" BASIS, |
| // * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // * See the License for the specific language governing permissions and |
| // * limitations under the License. |
| // * |
| // ***************************************************************************** |
| // * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore |
| //*/ |
| |
| |
| .text |
| .global ixheaacd_calc_max_spectral_line_armv8 |
| ixheaacd_calc_max_spectral_line_armv8: |
| |
| LSR W4, W1, #3 |
| LSL W6, W4, #3 |
| MOV w11, #0x00000000 |
| MOV V3.S[0], w11 |
| MOV V3.S[1], w11 |
| MOV V3.S[2], w11 |
| MOV V3.S[3], w11 |
| |
| LOOP_1: |
| LD1 {V0.4S}, [X0], #16 |
| LD1 {V1.4S}, [X0], #16 |
| |
| ABS V0.4S, V0.4S |
| ABS V1.4S, V1.4S |
| |
| SUBS W4, W4, #1 |
| |
| ORR V3.16B, V0.16B, V3.16B |
| ORR V3.16B, V1.16B, V3.16B |
| |
| BGT LOOP_1 |
| |
| SUBS W7, W1, W6 |
| |
| MOV W4, V3.S[0] |
| MOV W1, V3.S[1] |
| MOV W2, V3.S[2] |
| ORR W4, W4, W1 |
| MOV W3, V3.S[3] |
| ORR W4, W4, W2 |
| ORR W4, W4, W3 |
| BEQ END_FUNC |
| LOOP_2: |
| |
| LDR W2, [X0], #4 |
| |
| CMP W2, #0 |
| |
| CNEG W2, W2, LE |
| ORR W4, W4, W2 |
| SUBS W7, W7, #1 |
| BGT LOOP_2 |
| |
| END_FUNC: |
| |
| MOV W0, W4 |
| CMP W0, #0 |
| |
| CNEG W0, W0, LE |
| CLZ W0, W0 |
| SUB W0, W0, #1 |
| |
| RET |
| |
| |
| |
| |
