| @/****************************************************************************** |
| @ * |
| @ * 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 |
| .p2align 2 |
| |
| .global ixheaacd_mps_synt_post_fft_twiddle_armv7 |
| ixheaacd_mps_synt_post_fft_twiddle_armv7: |
| |
| STMFD sp!, {r4-r12, r14} |
| VPUSH {D8-D15} |
| LDR R4, [SP, #104] |
| LDR R5, [SP, #108] |
| |
| ADD R6, R5, R0, LSL #3 |
| LSL R7, R0, #1 |
| MOV R8, #-16 |
| ADD R6, R6, R8 |
| LOOP1: |
| VLD1.32 {D0, D1}, [R1]! |
| VLD1.32 {D2, D3}, [R2]! |
| VLD1.32 {D4, D5}, [R3]! |
| VLD1.32 {D6, D7}, [R4]! |
| |
| VMULL.S32 Q4, D0, D4 |
| VMULL.S32 Q5, D2, D6 |
| VMULL.S32 Q6, D1, D5 |
| VMULL.S32 Q7, D3, D7 |
| |
| VSHRN.S64 D8, Q4, #31 |
| VSHRN.S64 D10, Q5, #31 |
| VSHRN.S64 D12, Q6, #31 |
| VSHRN.S64 D14, Q7, #31 |
| |
| VQADD.S32 D1, D8, D10 |
| VQADD.S32 D0, D12, D14 |
| |
| VREV64.32 D1, D1 |
| VREV64.32 D0, D0 |
| |
| |
| SUBS R7, R7, #4 |
| VST1.32 {D0, D1}, [R6], R8 |
| |
| BGT LOOP1 |
| VPOP {D8-D15} |
| LDMFD sp!, {r4-r12, r15} |