61 lines
1.7 KiB
ArmAsm
61 lines
1.7 KiB
ArmAsm
@/******************************************************************************
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@ *
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@ * Copyright (C) 2018 The Android Open Source Project
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@ *
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@ * Licensed under the Apache License, Version 2.0 (the "License");
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@ * you may not use this file except in compliance with the License.
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@ * You may obtain a copy of the License at:
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@ *
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@ * http://www.apache.org/licenses/LICENSE-2.0
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@ *
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@ * Unless required by applicable law or agreed to in writing, software
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@ * distributed under the License is distributed on an "AS IS" BASIS,
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@ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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@ * See the License for the specific language governing permissions and
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@ * limitations under the License.
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@ *
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@ *****************************************************************************
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@ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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@*/
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.text
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.p2align 2
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.global ixheaacd_mps_synt_post_twiddle_armv7
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ixheaacd_mps_synt_post_twiddle_armv7:
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STMFD sp!, {r4-r12, r14}
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VPUSH {D8-D15}
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lsl R3, R3, #1
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LOOP1:
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VLD2.32 {D13, D14}, [R2]!
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VLD2.32 {D15, D16}, [R1]!
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VLD2.32 {D2, D3}, [R0]
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VNEG.S32 D12, D2
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VMULL.S32 Q2, D13, D12
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VMULL.S32 Q3, D13, D3
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VMULL.S32 Q4, D15, D2
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VMULL.S32 Q5, D15, D3
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VSHRN.I64 D4, Q2, #31
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VSHRN.I64 D6, Q3, #31
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VSHRN.I64 D8, Q4, #31
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VSHRN.I64 D10, Q5, #31
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VQADD.S32 D0, D8, D6
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VQADD.S32 D1, D4, D10
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SUBS R3, R3, #4
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VST2.32 {D0, D1} , [R0]!
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BGT LOOP1
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VPOP {D8-D15}
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LDMFD sp!, {r4-r12, r15}
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