ref: ef1ea0083c061a86e578551d0b8409548a549eb2
parent: e034611481726b74bab496907bb0675942be4d04
author: Martin Storsjö <martin@martin.st>
date: Wed May 8 19:26:27 EDT 2019
arm64: itx: Add NEON optimized inverse transforms
The speedup for most non-dc-only dct functions is around 9-12x
over the C code generated by GCC 7.3.
Relative speedups vs C for a few functions:
Cortex A53 A72 A73
inv_txfm_add_4x4_dct_dct_0_8bpc_neon: 3.90 4.16 5.65
inv_txfm_add_4x4_dct_dct_1_8bpc_neon: 7.20 8.05 11.19
inv_txfm_add_8x8_dct_dct_0_8bpc_neon: 5.09 6.73 6.45
inv_txfm_add_8x8_dct_dct_1_8bpc_neon: 12.18 10.80 13.05
inv_txfm_add_16x16_dct_dct_0_8bpc_neon: 7.31 9.35 11.17
inv_txfm_add_16x16_dct_dct_1_8bpc_neon: 14.36 13.06 15.93
inv_txfm_add_16x16_dct_dct_2_8bpc_neon: 11.00 10.09 12.05
inv_txfm_add_32x32_dct_dct_0_8bpc_neon: 4.41 5.40 5.77
inv_txfm_add_32x32_dct_dct_1_8bpc_neon: 13.84 13.81 18.04
inv_txfm_add_32x32_dct_dct_2_8bpc_neon: 11.75 11.87 15.22
inv_txfm_add_32x32_dct_dct_3_8bpc_neon: 10.20 10.40 13.13
inv_txfm_add_32x32_dct_dct_4_8bpc_neon: 9.01 9.21 11.56
inv_txfm_add_64x64_dct_dct_0_8bpc_neon: 3.84 4.82 5.28
inv_txfm_add_64x64_dct_dct_1_8bpc_neon: 14.40 12.69 16.71
inv_txfm_add_64x64_dct_dct_4_8bpc_neon: 10.91 9.63 12.67
Some of the specialcased identity_identity transforms for 32x32
give insane speedups over the generic C code:
inv_txfm_add_32x32_identity_identity_0_8bpc_neon: 225.26 238.11 247.07
inv_txfm_add_32x32_identity_identity_1_8bpc_neon: 225.33 238.53 247.69
inv_txfm_add_32x32_identity_identity_2_8bpc_neon: 59.60 61.94 64.63
inv_txfm_add_32x32_identity_identity_3_8bpc_neon: 26.98 27.99 29.21
inv_txfm_add_32x32_identity_identity_4_8bpc_neon: 15.08 15.93 16.56
--- /dev/null
+++ b/src/arm/64/itx.S
@@ -1,0 +1,3160 @@
+/******************************************************************************
+ * Copyright © 2018, VideoLAN and dav1d authors
+ * Copyright © 2019, Martin Storsjo
+ * 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.
+ *
+ * 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 COPYRIGHT OWNER 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 "src/arm/asm.S"
+#include "util.S"
+
+// The exported functions in this file have got the following signature:
+// void itxfm_add(pixel *dst, ptrdiff_t dst_stride, coef *coeff, int eob);
+
+// Most of the functions use the following register layout:
+// x0-x3 external parameters
+// x4 function pointer to first transform
+// x5 function pointer to second transform
+// x6 output parameter for helper function
+// x7 input parameter for helper function
+// x8 input stride for helper function
+// x9-x12 scratch variables for helper functions
+// x13 pointer to list of eob thresholds
+// x14 return pointer for helper function
+// x15 return pointer for main function
+
+// The SIMD registers most often use the following layout:
+// v0-v1 multiplication coefficients
+// v2-v7 scratch registers
+// v8-v15 unused
+// v16-v31 inputs/outputs of transforms
+
+// Potential further optimizations, that are left unimplemented for now:
+// - Trying to keep multiplication coefficients in registers across multiple
+// transform functions. (The register layout is designed to potentially
+// allow this.)
+// - Use a simplified version of the transforms themselves for cases where
+// we know a significant number of inputs are zero. E.g. if the eob value
+// indicates only a quarter of input values are set, for idct16 and up,
+// a significant amount of calculation can be skipped, at the cost of more
+// code duplication and special casing.
+// - Special case functions for e.g. more combinations with identity.
+
+const idct_coeffs, align=4
+ // idct4
+ .short 2896, 2896*8, 1567, 3784
+ // idct8
+ .short 799, 4017, 3406, 2276
+ // idct16
+ .short 401, 4076, 3166, 2598
+ .short 1931, 3612, 3920, 1189
+ // idct32
+ .short 201, 4091, 3035, 2751
+ .short 1751, 3703, 3857, 1380
+ .short 995, 3973, 3513, 2106
+ .short 2440, 3290, 4052, 601
+endconst
+
+const idct64_coeffs, align=4
+ .short 101*8, 4095*8, 2967*8, -2824*8
+ .short 1660*8, 3745*8, 3822*8, -1474*8
+ .short 4076, 401, 4017, 799
+ .short 0, 0, 0, 0
+
+ .short 4036*8, -700*8, 2359*8, 3349*8
+ .short 3461*8, -2191*8, 897*8, 3996*8
+ .short -3166, -2598, -799, -4017
+ .short 0, 0, 0, 0
+
+ .short 501*8, 4065*8, 3229*8, -2520*8
+ .short 2019*8, 3564*8, 3948*8, -1092*8
+ .short 3612, 1931, 2276, 3406
+ .short 0, 0, 0, 0
+
+ .short 4085*8, -301*8, 2675*8, 3102*8
+ .short 3659*8, -1842*8, 1285*8, 3889*8
+ .short -3920, -1189, -3406, -2276
+ .short 0, 0, 0, 0
+endconst
+
+const iadst4_coeffs, align=4
+ .short 1321, 3803, 2482, 3344, 3344*8
+endconst
+
+const iadst8_coeffs, align=4
+ .short 4076, 401, 3612, 1931
+ .short 2598, 3166, 1189, 3920
+ // idct_coeffs
+ .short 2896, 2896*8, 1567, 3784, 0, 0, 0, 0
+endconst
+
+const iadst16_coeffs, align=4
+ .short 4091, 201, 3973, 995
+ .short 3703, 1751, 3290, 2440
+ .short 2751, 3035, 2106, 3513
+ .short 1380, 3857, 601, 4052
+endconst
+
+.macro smull_smlal d0, d1, s0, s1, c0, c1, sz
+ smull \d0\().4s, \s0\().4h, \c0
+ smlal \d0\().4s, \s1\().4h, \c1
+.ifc \sz, .8h
+ smull2 \d1\().4s, \s0\().8h, \c0
+ smlal2 \d1\().4s, \s1\().8h, \c1
+.endif
+.endm
+
+.macro smull_smlsl d0, d1, s0, s1, c0, c1, sz
+ smull \d0\().4s, \s0\().4h, \c0
+ smlsl \d0\().4s, \s1\().4h, \c1
+.ifc \sz, .8h
+ smull2 \d1\().4s, \s0\().8h, \c0
+ smlsl2 \d1\().4s, \s1\().8h, \c1
+.endif
+.endm
+
+.macro smull_sz d0, d1, s0, c, sz
+ smull \d0\().4s, \s0\().4h, \c
+.ifc \sz, .8h
+ smull2 \d1\().4s, \s0\().8h, \c
+.endif
+.endm
+
+.macro rshrn_sz d0, s0, s1, shift, sz
+ rshrn \d0\().4h, \s0\().4s, \shift
+.ifc \sz, .8h
+ rshrn2 \d0\().8h, \s1\().4s, \shift
+.endif
+.endm
+
+.macro scale_input sz, c, r0, r1, r2 r3, r4, r5, r6, r7
+ sqrdmulh \r0\sz, \r0\sz, \c
+ sqrdmulh \r1\sz, \r1\sz, \c
+ sqrdmulh \r2\sz, \r2\sz, \c
+ sqrdmulh \r3\sz, \r3\sz, \c
+.ifnb \r4
+ sqrdmulh \r4\sz, \r4\sz, \c
+ sqrdmulh \r5\sz, \r5\sz, \c
+ sqrdmulh \r6\sz, \r6\sz, \c
+ sqrdmulh \r7\sz, \r7\sz, \c
+.endif
+.endm
+
+.macro scale_wide sz, c, r0, r1, r2 r3, r4, r5, r6, r7
+ smull_sz v2, v3, \r0, \c, \sz
+ smull_sz v4, v5, \r1, \c, \sz
+ smull_sz v6, v7, \r2, \c, \sz
+ rshrn_sz \r0, v2, v3, #12, \sz
+ smull_sz v2, v3, \r3, \c, \sz
+ rshrn_sz \r1, v4, v5, #12, \sz
+.ifnb \r4
+ smull_sz v4, v5, \r4, \c, \sz
+.endif
+ rshrn_sz \r2, v6, v7, #12, \sz
+.ifnb \r4
+ smull_sz v6, v7, \r5, \c, \sz
+.endif
+ rshrn_sz \r3, v2, v3, #12, \sz
+.ifnb \r4
+ smull_sz v2, v3, \r6, \c, \sz
+ rshrn_sz \r4, v4, v5, #12, \sz
+ smull_sz v4, v5, \r7, \c, \sz
+ rshrn_sz \r5, v6, v7, #12, \sz
+ rshrn_sz \r6, v2, v3, #12, \sz
+ rshrn_sz \r7, v4, v5, #12, \sz
+.endif
+.endm
+
+.macro load_add_store load, shift, addsrc, adddst, narrowsrc, narrowdst, store, dst, src, shiftbits=4
+.ifnb \load
+ ld1 {\load}, [\src], x1+.endif
+.ifnb \shift
+ srshr \shift, \shift, #\shiftbits
+.endif
+.ifnb \addsrc
+ uaddw \adddst, \adddst, \addsrc
+.endif
+.ifnb \narrowsrc
+ sqxtun \narrowdst, \narrowsrc
+.endif
+.ifnb \store
+ st1 {\store}, [\dst], x1+.endif
+.endm
+.macro load_add_store_8x16 dst, src
+ mov \src, \dst
+ load_add_store v2.8b, v16.8h, , , , , , \dst, \src
+ load_add_store v3.8b, v17.8h, , , , , , \dst, \src
+ load_add_store v4.8b, v18.8h, v2.8b, v16.8h, , , , \dst, \src
+ load_add_store v5.8b, v19.8h, v3.8b, v17.8h, v16.8h, v2.8b, , \dst, \src
+ load_add_store v6.8b, v20.8h, v4.8b, v18.8h, v17.8h, v3.8b, v2.8b, \dst, \src
+ load_add_store v7.8b, v21.8h, v5.8b, v19.8h, v18.8h, v4.8b, v3.8b, \dst, \src
+ load_add_store v2.8b, v22.8h, v6.8b, v20.8h, v19.8h, v5.8b, v4.8b, \dst, \src
+ load_add_store v3.8b, v23.8h, v7.8b, v21.8h, v20.8h, v6.8b, v5.8b, \dst, \src
+ load_add_store v4.8b, v24.8h, v2.8b, v22.8h, v21.8h, v7.8b, v6.8b, \dst, \src
+ load_add_store v5.8b, v25.8h, v3.8b, v23.8h, v22.8h, v2.8b, v7.8b, \dst, \src
+ load_add_store v6.8b, v26.8h, v4.8b, v24.8h, v23.8h, v3.8b, v2.8b, \dst, \src
+ load_add_store v7.8b, v27.8h, v5.8b, v25.8h, v24.8h, v4.8b, v3.8b, \dst, \src
+ load_add_store v2.8b, v28.8h, v6.8b, v26.8h, v25.8h, v5.8b, v4.8b, \dst, \src
+ load_add_store v3.8b, v29.8h, v7.8b, v27.8h, v26.8h, v6.8b, v5.8b, \dst, \src
+ load_add_store v4.8b, v30.8h, v2.8b, v28.8h, v27.8h, v7.8b, v6.8b, \dst, \src
+ load_add_store v5.8b, v31.8h, v3.8b, v29.8h, v28.8h, v2.8b, v7.8b, \dst, \src
+ load_add_store , , v4.8b, v30.8h, v29.8h, v3.8b, v2.8b, \dst, \src
+ load_add_store , , v5.8b, v31.8h, v30.8h, v4.8b, v3.8b, \dst, \src
+ load_add_store , , , , v31.8h, v5.8b, v4.8b, \dst, \src
+ load_add_store , , , , , , v5.8b, \dst, \src
+.endm
+.macro load_add_store_8x8 dst, src, shiftbits=4
+ mov \src, \dst
+ load_add_store v2.8b, v16.8h, , , , , , \dst, \src, \shiftbits
+ load_add_store v3.8b, v17.8h, , , , , , \dst, \src, \shiftbits
+ load_add_store v4.8b, v18.8h, v2.8b, v16.8h, , , , \dst, \src, \shiftbits
+ load_add_store v5.8b, v19.8h, v3.8b, v17.8h, v16.8h, v2.8b, , \dst, \src, \shiftbits
+ load_add_store v6.8b, v20.8h, v4.8b, v18.8h, v17.8h, v3.8b, v2.8b, \dst, \src, \shiftbits
+ load_add_store v7.8b, v21.8h, v5.8b, v19.8h, v18.8h, v4.8b, v3.8b, \dst, \src, \shiftbits
+ load_add_store v2.8b, v22.8h, v6.8b, v20.8h, v19.8h, v5.8b, v4.8b, \dst, \src, \shiftbits
+ load_add_store v3.8b, v23.8h, v7.8b, v21.8h, v20.8h, v6.8b, v5.8b, \dst, \src, \shiftbits
+ load_add_store , , v2.8b, v22.8h, v21.8h, v7.8b, v6.8b, \dst, \src, \shiftbits
+ load_add_store , , v3.8b, v23.8h, v22.8h, v2.8b, v7.8b, \dst, \src, \shiftbits
+ load_add_store , , , , v23.8h, v3.8b, v2.8b, \dst, \src, \shiftbits
+ load_add_store , , , , , , v3.8b, \dst, \src, \shiftbits
+.endm
+.macro load_add_store_8x4 dst, src
+ mov \src, \dst
+ load_add_store v2.8b, v16.8h, , , , , , \dst, \src
+ load_add_store v3.8b, v17.8h, , , , , , \dst, \src
+ load_add_store v4.8b, v18.8h, v2.8b, v16.8h, , , , \dst, \src
+ load_add_store v5.8b, v19.8h, v3.8b, v17.8h, v16.8h, v2.8b, , \dst, \src
+ load_add_store , , v4.8b, v18.8h, v17.8h, v3.8b, v2.8b, \dst, \src
+ load_add_store , , v5.8b, v19.8h, v18.8h, v4.8b, v3.8b, \dst, \src
+ load_add_store , , , , v19.8h, v5.8b, v4.8b, \dst, \src
+ load_add_store , , , , , , v5.8b, \dst, \src
+.endm
+.macro load_add_store4 load, inssrc, insdst, shift, addsrc, adddst, narrowsrc, narrowdst, store, dst, src
+.ifnb \load
+ ld1 {\load}[0], [\src], x1+.endif
+.ifnb \inssrc
+ ins \insdst\().d[1], \inssrc\().d[0]
+.endif
+.ifnb \shift
+ srshr \shift, \shift, #4
+.endif
+.ifnb \load
+ ld1 {\load}[1], [\src], x1+.endif
+.ifnb \addsrc
+ uaddw \adddst, \adddst, \addsrc
+.endif
+.ifnb \store
+ st1 {\store}[0], [\dst], x1+.endif
+.ifnb \narrowsrc
+ sqxtun \narrowdst, \narrowsrc
+.endif
+.ifnb \store
+ st1 {\store}[1], [\dst], x1+.endif
+.endm
+.macro load_add_store_4x16 dst, src
+ mov \src, \dst
+ load_add_store4 v0.s, v17, v16, , , , , , , \dst, \src
+ load_add_store4 v1.s, v19, v18, , , , , , , \dst, \src
+ load_add_store4 v2.s, v21, v20, v16.8h, , , , , , \dst, \src
+ load_add_store4 v3.s, v23, v22, v18.8h, v0.8b, v16.8h, , , , \dst, \src
+ load_add_store4 v4.s, v25, v24, v20.8h, v1.8b, v18.8h, v16.8h, v0.8b, , \dst, \src
+ load_add_store4 v5.s, v27, v26, v22.8h, v2.8b, v20.8h, v18.8h, v1.8b, v0.s, \dst, \src
+ load_add_store4 v6.s, v29, v28, v24.8h, v3.8b, v22.8h, v20.8h, v2.8b, v1.s, \dst, \src
+ load_add_store4 v7.s, v31, v30, v26.8h, v4.8b, v24.8h, v22.8h, v3.8b, v2.s, \dst, \src
+ load_add_store4 , , , v28.8h, v5.8b, v26.8h, v24.8h, v4.8b, v3.s, \dst, \src
+ load_add_store4 , , , v30.8h, v6.8b, v28.8h, v26.8h, v5.8b, v4.s, \dst, \src
+ load_add_store4 , , , , v7.8b, v30.8h, v28.8h, v6.8b, v5.s, \dst, \src
+ load_add_store4 , , , , , , v30.8h, v7.8b, v6.s, \dst, \src
+ load_add_store4 , , , , , , , , v7.s, \dst, \src
+.endm
+.macro load_add_store_4x8 dst, src
+ mov \src, \dst
+ load_add_store4 v0.s, v17, v16, , , , , , , \dst, \src
+ load_add_store4 v1.s, v19, v18, , , , , , , \dst, \src
+ load_add_store4 v2.s, v21, v20, v16.8h, , , , , , \dst, \src
+ load_add_store4 v3.s, v23, v22, v18.8h, v0.8b, v16.8h, , , , \dst, \src
+ load_add_store4 , , , v20.8h, v1.8b, v18.8h, v16.8h, v0.8b, , \dst, \src
+ load_add_store4 , , , v22.8h, v2.8b, v20.8h, v18.8h, v1.8b, v0.s, \dst, \src
+ load_add_store4 , , , , v3.8b, v22.8h, v20.8h, v2.8b, v1.s, \dst, \src
+ load_add_store4 , , , , , , v22.8h, v3.8b, v2.s, \dst, \src
+ load_add_store4 , , , , , , , , v3.s, \dst, \src
+.endm
+
+.macro idct_dc w, h, shift
+ cbnz w3, 1f
+ mov w16, #2896*8
+ ld1r {v16.8h}, [x2]+ dup v0.4h, w16
+ sqrdmulh v16.8h, v16.8h, v0.h[0]
+ strh wzr, [x2]
+.if (\w == 2*\h) || (2*\w == \h)
+ sqrdmulh v16.8h, v16.8h, v0.h[0]
+.endif
+.if \shift > 0
+ srshr v16.8h, v16.8h, #\shift
+.endif
+ sqrdmulh v16.8h, v16.8h, v0.h[0]
+ srshr v16.8h, v16.8h, #4
+ mov w4, #\h
+ b idct_dc_w\w\()_neon
+1:
+.endm
+
+function idct_dc_w4_neon
+1:
+ ld1 {v0.s}[0], [x0], x1+ ld1 {v0.s}[1], [x0], x1+ ld1 {v1.s}[0], [x0], x1+ ld1 {v1.s}[1], [x0], x1+ subs w4, w4, #4
+ sub x0, x0, x1, lsl #2
+ uaddw v0.8h, v16.8h, v0.8b
+ sqxtun v0.8b, v0.8h
+ uaddw v1.8h, v16.8h, v1.8b
+ st1 {v0.s}[0], [x0], x1+ sqxtun v1.8b, v1.8h
+ st1 {v0.s}[1], [x0], x1+ st1 {v1.s}[0], [x0], x1+ st1 {v1.s}[1], [x0], x1+ b.gt 1b
+ ret
+endfunc
+
+function idct_dc_w8_neon
+1:
+ ld1 {v0.8b}, [x0], x1+ ld1 {v1.8b}, [x0], x1+ ld1 {v2.8b}, [x0], x1+ uaddw v20.8h, v16.8h, v0.8b
+ ld1 {v3.8b}, [x0], x1+ sub x0, x0, x1, lsl #2
+ subs w4, w4, #4
+ uaddw v21.8h, v16.8h, v1.8b
+ sqxtun v0.8b, v20.8h
+ uaddw v22.8h, v16.8h, v2.8b
+ sqxtun v1.8b, v21.8h
+ uaddw v23.8h, v16.8h, v3.8b
+ st1 {v0.8b}, [x0], x1+ sqxtun v2.8b, v22.8h
+ st1 {v1.8b}, [x0], x1+ sqxtun v3.8b, v23.8h
+ st1 {v2.8b}, [x0], x1+ st1 {v3.8b}, [x0], x1+ b.gt 1b
+ ret
+endfunc
+
+function idct_dc_w16_neon
+1:
+ ld1 {v0.16b}, [x0], x1+ ld1 {v1.16b}, [x0], x1+ ld1 {v2.16b}, [x0], x1+ subs w4, w4, #4
+ uaddw v20.8h, v16.8h, v0.8b
+ uaddw2 v21.8h, v16.8h, v0.16b
+ ld1 {v3.16b}, [x0], x1+ uaddw v22.8h, v16.8h, v1.8b
+ uaddw2 v23.8h, v16.8h, v1.16b
+ sub x0, x0, x1, lsl #2
+ uaddw v24.8h, v16.8h, v2.8b
+ uaddw2 v25.8h, v16.8h, v2.16b
+ sqxtun v0.8b, v20.8h
+ sqxtun2 v0.16b, v21.8h
+ uaddw v26.8h, v16.8h, v3.8b
+ uaddw2 v27.8h, v16.8h, v3.16b
+ sqxtun v1.8b, v22.8h
+ sqxtun2 v1.16b, v23.8h
+ sqxtun v2.8b, v24.8h
+ sqxtun2 v2.16b, v25.8h
+ st1 {v0.16b}, [x0], x1+ sqxtun v3.8b, v26.8h
+ sqxtun2 v3.16b, v27.8h
+ st1 {v1.16b}, [x0], x1+ st1 {v2.16b}, [x0], x1+ st1 {v3.16b}, [x0], x1+ b.gt 1b
+ ret
+endfunc
+
+function idct_dc_w32_neon
+1:
+ ld1 {v0.16b, v1.16b}, [x0], x1+ subs w4, w4, #2
+ uaddw v20.8h, v16.8h, v0.8b
+ uaddw2 v21.8h, v16.8h, v0.16b
+ ld1 {v2.16b, v3.16b}, [x0]+ uaddw v22.8h, v16.8h, v1.8b
+ uaddw2 v23.8h, v16.8h, v1.16b
+ sub x0, x0, x1
+ uaddw v24.8h, v16.8h, v2.8b
+ uaddw2 v25.8h, v16.8h, v2.16b
+ sqxtun v0.8b, v20.8h
+ sqxtun2 v0.16b, v21.8h
+ uaddw v26.8h, v16.8h, v3.8b
+ uaddw2 v27.8h, v16.8h, v3.16b
+ sqxtun v1.8b, v22.8h
+ sqxtun2 v1.16b, v23.8h
+ sqxtun v2.8b, v24.8h
+ sqxtun2 v2.16b, v25.8h
+ st1 {v0.16b, v1.16b}, [x0], x1+ sqxtun v3.8b, v26.8h
+ sqxtun2 v3.16b, v27.8h
+ st1 {v2.16b, v3.16b}, [x0], x1+ b.gt 1b
+ ret
+endfunc
+
+function idct_dc_w64_neon
+1:
+ ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [x0]+ subs w4, w4, #1
+ uaddw v20.8h, v16.8h, v0.8b
+ uaddw2 v21.8h, v16.8h, v0.16b
+ uaddw v22.8h, v16.8h, v1.8b
+ uaddw2 v23.8h, v16.8h, v1.16b
+ uaddw v24.8h, v16.8h, v2.8b
+ uaddw2 v25.8h, v16.8h, v2.16b
+ sqxtun v0.8b, v20.8h
+ sqxtun2 v0.16b, v21.8h
+ uaddw v26.8h, v16.8h, v3.8b
+ uaddw2 v27.8h, v16.8h, v3.16b
+ sqxtun v1.8b, v22.8h
+ sqxtun2 v1.16b, v23.8h
+ sqxtun v2.8b, v24.8h
+ sqxtun2 v2.16b, v25.8h
+ sqxtun v3.8b, v26.8h
+ sqxtun2 v3.16b, v27.8h
+ st1 {v0.16b, v1.16b, v2.16b, v3.16b}, [x0], x1+ b.gt 1b
+ ret
+endfunc
+
+.macro iwht4
+ add v16.4h, v16.4h, v17.4h
+ sub v21.4h, v18.4h, v19.4h
+ sub v20.4h, v16.4h, v21.4h
+ sshr v20.4h, v20.4h, #1
+ sub v18.4h, v20.4h, v17.4h
+ sub v17.4h, v20.4h, v19.4h
+ add v19.4h, v21.4h, v18.4h
+ sub v16.4h, v16.4h, v17.4h
+.endm
+
+.macro idct_4 r0, r1, r2, r3, sz
+ add v2\sz, \r0\sz, \r2\sz
+ sub v3\sz, \r0\sz, \r2\sz
+ smull_smlal v6, v7, \r1, \r3, v0.h[3], v0.h[2], \sz
+ smull_smlsl v4, v5, \r1, \r3, v0.h[2], v0.h[3], \sz
+ sqrdmulh v2\sz, v2\sz, v0.h[1]
+ sqrdmulh v3\sz, v3\sz, v0.h[1]
+ rshrn_sz v6, v6, v7, #12, \sz
+ rshrn_sz v4, v4, v5, #12, \sz
+ sqadd \r0\sz, v2\sz, v6\sz
+ sqsub \r3\sz, v2\sz, v6\sz
+ sqadd \r1\sz, v3\sz, v4\sz
+ sqsub \r2\sz, v3\sz, v4\sz
+.endm
+
+function inv_dct_4x4_neon
+ movrel x16, idct_coeffs
+ ld1 {v0.4h}, [x16]+ idct_4 v16, v17, v18, v19, .4h
+ ret
+endfunc
+
+function inv_dct_8x4_neon
+ movrel x16, idct_coeffs
+ ld1 {v0.4h}, [x16]+ idct_4 v16, v17, v18, v19, .8h
+ ret
+endfunc
+
+.macro iadst_4x4 o0, o1, o2, o3
+ movrel x16, iadst4_coeffs
+ ld1 {v0.8h}, [x16]+
+ sub v3.4h, v16.4h, v18.4h
+ smull v4.4s, v16.4h, v0.h[0]
+ smlal v4.4s, v18.4h, v0.h[1]
+ smlal v4.4s, v19.4h, v0.h[2]
+ smull v7.4s, v17.4h, v0.h[3]
+ add v3.4h, v3.4h, v19.4h
+ smull v5.4s, v16.4h, v0.h[2]
+ smlsl v5.4s, v18.4h, v0.h[0]
+ smlsl v5.4s, v19.4h, v0.h[1]
+
+ add \o3\().4s, v4.4s, v5.4s
+ sqrdmulh \o2\().4h, v3.4h, v0.h[4]
+ add \o0\().4s, v4.4s, v7.4s
+ add \o1\().4s, v5.4s, v7.4s
+ sub \o3\().4s, \o3\().4s, v7.4s
+
+ rshrn \o0\().4h, \o0\().4s, #12
+ rshrn \o1\().4h, \o1\().4s, #12
+ rshrn \o3\().4h, \o3\().4s, #12
+.endm
+
+function inv_adst_4x4_neon
+ iadst_4x4 v16, v17, v18, v19
+ ret
+endfunc
+
+function inv_flipadst_4x4_neon
+ iadst_4x4 v19, v18, v17, v16
+ ret
+endfunc
+
+.macro iadst_8x4 o0, o1, o2, o3
+ movrel x16, iadst4_coeffs
+ ld1 {v0.8h}, [x16]+
+ sub v3.8h, v16.8h, v18.8h
+ smull v4.4s, v16.4h, v0.h[0]
+ smlal v4.4s, v18.4h, v0.h[1]
+ smlal v4.4s, v19.4h, v0.h[2]
+ smull2 v5.4s, v16.8h, v0.h[0]
+ smlal2 v5.4s, v18.8h, v0.h[1]
+ smlal2 v5.4s, v19.8h, v0.h[2]
+ add v3.8h, v3.8h, v19.8h
+ smull v6.4s, v16.4h, v0.h[2]
+ smlsl v6.4s, v18.4h, v0.h[0]
+ smlsl v6.4s, v19.4h, v0.h[1]
+ smull2 v7.4s, v16.8h, v0.h[2]
+ smlsl2 v7.4s, v18.8h, v0.h[0]
+ smlsl2 v7.4s, v19.8h, v0.h[1]
+
+ sqrdmulh v18.8h, v3.8h, v0.h[4]
+
+ smull v2.4s, v17.4h, v0.h[3]
+ smull2 v3.4s, v17.8h, v0.h[3]
+
+ add v16.4s, v4.4s, v2.4s // out0
+ add v17.4s, v5.4s, v3.4s
+
+ add v4.4s, v4.4s, v6.4s // out3
+ add v5.4s, v5.4s, v7.4s
+
+ add v6.4s, v6.4s, v2.4s // out1
+ add v7.4s, v7.4s, v3.4s
+
+ sub v4.4s, v4.4s, v2.4s // out3
+ sub v5.4s, v5.4s, v3.4s
+
+ rshrn \o0\().4h, v16.4s, #12
+ rshrn2 \o0\().8h, v17.4s, #12
+
+.ifc \o2, v17
+ mov v17.16b, v18.16b
+.endif
+
+ rshrn \o1\().4h, v6.4s, #12
+ rshrn2 \o1\().8h, v7.4s, #12
+
+ rshrn \o3\().4h, v4.4s, #12
+ rshrn2 \o3\().8h, v5.4s, #12
+.endm
+
+function inv_adst_8x4_neon
+ iadst_8x4 v16, v17, v18, v19
+ ret
+endfunc
+
+function inv_flipadst_8x4_neon
+ iadst_8x4 v19, v18, v17, v16
+ ret
+endfunc
+
+function inv_identity_4x4_neon
+ mov w16, #5793
+ dup v0.4h, w16
+ smull v4.4s, v16.4h, v0.h[0]
+ smull v5.4s, v17.4h, v0.h[0]
+ smull v6.4s, v18.4h, v0.h[0]
+ smull v7.4s, v19.4h, v0.h[0]
+ rshrn v16.4h, v4.4s, #12
+ rshrn v17.4h, v5.4s, #12
+ rshrn v18.4h, v6.4s, #12
+ rshrn v19.4h, v7.4s, #12
+ ret
+endfunc
+
+function inv_identity_8x4_neon
+ mov w16, #5793
+ dup v0.4h, w16
+ smull v2.4s, v16.4h, v0.h[0]
+ smull2 v3.4s, v16.8h, v0.h[0]
+ smull v4.4s, v17.4h, v0.h[0]
+ smull2 v5.4s, v17.8h, v0.h[0]
+ rshrn v16.4h, v2.4s, #12
+ rshrn2 v16.8h, v3.4s, #12
+ smull v6.4s, v18.4h, v0.h[0]
+ smull2 v7.4s, v18.8h, v0.h[0]
+ rshrn v17.4h, v4.4s, #12
+ rshrn2 v17.8h, v5.4s, #12
+ smull v2.4s, v19.4h, v0.h[0]
+ smull2 v3.4s, v19.8h, v0.h[0]
+ rshrn v18.4h, v6.4s, #12
+ rshrn2 v18.8h, v7.4s, #12
+ rshrn v19.4h, v2.4s, #12
+ rshrn2 v19.8h, v3.4s, #12
+ ret
+endfunc
+
+function inv_txfm_add_wht_wht_4x4_neon, export=1
+ mov x15, x30
+ movi v31.8h, #0
+ ld1 {v16.4h,v17.4h,v18.4h,v19.4h}, [x2]+ st1 {v31.8h}, [x2], #16+
+ sshr v16.4h, v16.4h, #2
+ sshr v17.4h, v17.4h, #2
+ sshr v18.4h, v18.4h, #2
+ sshr v19.4h, v19.4h, #2
+
+ iwht4
+
+ st1 {v31.8h}, [x2], #16+ transpose_4x4h v16, v17, v18, v19, v20, v21, v22, v23
+
+ iwht4
+
+ ld1 {v0.s}[0], [x0], x1+ ld1 {v0.s}[1], [x0], x1+ ins v16.d[1], v17.d[0]
+ ins v18.d[1], v19.d[0]
+ ld1 {v1.s}[0], [x0], x1+ ld1 {v1.s}[1], [x0], x1+
+ b L(itx_4x4_end)
+endfunc
+
+function inv_txfm_add_4x4_neon
+ movi v31.8h, #0
+ ld1 {v16.4h,v17.4h,v18.4h,v19.4h}, [x2]+ st1 {v31.8h}, [x2], #16+
+ blr x4
+
+ st1 {v31.8h}, [x2], #16+ transpose_4x4h v16, v17, v18, v19, v20, v21, v22, v23
+
+ blr x5
+
+ ld1 {v0.s}[0], [x0], x1+ ld1 {v0.s}[1], [x0], x1+ ins v16.d[1], v17.d[0]
+ ins v18.d[1], v19.d[0]
+ ld1 {v1.s}[0], [x0], x1+ ld1 {v1.s}[1], [x0], x1+ srshr v16.8h, v16.8h, #4
+ srshr v18.8h, v18.8h, #4
+
+L(itx_4x4_end):
+ sub x0, x0, x1, lsl #2
+ uaddw v16.8h, v16.8h, v0.8b
+ sqxtun v0.8b, v16.8h
+ uaddw v18.8h, v18.8h, v1.8b
+ st1 {v0.s}[0], [x0], x1+ sqxtun v1.8b, v18.8h
+ st1 {v0.s}[1], [x0], x1+ st1 {v1.s}[0], [x0], x1+ st1 {v1.s}[1], [x0], x1+
+ br x15
+endfunc
+
+.macro def_fn_4x4 txfm1, txfm2
+function inv_txfm_add_\txfm1\()_\txfm2\()_4x4_neon, export=1
+ mov x15, x30
+
+.ifc \txfm1\()_\txfm2, dct_dct
+ cbnz w3, 1f
+ mov w16, #2896*8
+ ld1r {v16.8h}, [x2]+ dup v4.8h, w16
+ strh wzr, [x2]
+ sqrdmulh v16.8h, v16.8h, v4.h[0]
+ ld1 {v0.s}[0], [x0], x1+ sqrdmulh v20.8h, v16.8h, v4.h[0]
+ ld1 {v0.s}[1], [x0], x1+ srshr v16.8h, v20.8h, #4
+ ld1 {v1.s}[0], [x0], x1+ srshr v18.8h, v20.8h, #4
+ ld1 {v1.s}[1], [x0], x1+ b L(itx_4x4_end)
+1:
+.endif
+ adr x4, inv_\txfm1\()_4x4_neon
+ adr x5, inv_\txfm2\()_4x4_neon
+ b inv_txfm_add_4x4_neon
+endfunc
+.endm
+
+def_fn_4x4 dct, dct
+def_fn_4x4 identity, identity
+def_fn_4x4 dct, adst
+def_fn_4x4 dct, flipadst
+def_fn_4x4 dct, identity
+def_fn_4x4 adst, dct
+def_fn_4x4 adst, adst
+def_fn_4x4 adst, flipadst
+def_fn_4x4 flipadst, dct
+def_fn_4x4 flipadst, adst
+def_fn_4x4 flipadst, flipadst
+def_fn_4x4 identity, dct
+
+def_fn_4x4 adst, identity
+def_fn_4x4 flipadst, identity
+def_fn_4x4 identity, adst
+def_fn_4x4 identity, flipadst
+
+.macro idct_8 r0, r1, r2, r3, r4, r5, r6, r7, sz, szb
+ idct_4 \r0, \r2, \r4, \r6, \sz
+
+ smull_smlsl v2, v3, \r1, \r7, v0.h[4], v0.h[5], \sz // -> t4a
+ smull_smlal v4, v5, \r1, \r7, v0.h[5], v0.h[4], \sz // -> t7a
+ smull_smlsl v6, v7, \r5, \r3, v0.h[6], v0.h[7], \sz // -> t5a
+ rshrn_sz \r1, v2, v3, #12, \sz // t4a
+ rshrn_sz \r7, v4, v5, #12, \sz // t7a
+ smull_smlal v2, v3, \r5, \r3, v0.h[7], v0.h[6], \sz // -> t6a
+ rshrn_sz \r3, v6, v7, #12, \sz // t5a
+ rshrn_sz \r5, v2, v3, #12, \sz // taa
+
+ sqadd v2\sz, \r1\sz, \r3\sz // t4
+ sqsub \r1\sz, \r1\sz, \r3\sz // t5a
+ sqadd v3\sz, \r7\sz, \r5\sz // t7
+ sqsub \r3\sz, \r7\sz, \r5\sz // t6a
+
+ sub \r5\sz, \r3\sz, \r1\sz // -> t5
+ add \r7\sz, \r3\sz, \r1\sz // -> t6
+
+ sqrdmulh v4\sz, \r5\sz, v0.h[1] // t5
+ sqrdmulh v5\sz, \r7\sz, v0.h[1] // t6
+
+ sqsub \r7\sz, \r0\sz, v3\sz // out7
+ sqadd \r0\sz, \r0\sz, v3\sz // out0
+ sqadd \r1\sz, \r2\sz, v5\sz // out1
+ sqsub v6\sz, \r2\sz, v5\sz // out6
+ sqadd \r2\sz, \r4\sz, v4\sz // out2
+ sqsub \r5\sz, \r4\sz, v4\sz // out5
+ sqadd \r3\sz, \r6\sz, v2\sz // out3
+ sqsub \r4\sz, \r6\sz, v2\sz // out4
+ mov \r6\szb, v6\szb // out6
+.endm
+
+function inv_dct_8x8_neon
+ movrel x16, idct_coeffs
+ ld1 {v0.8h}, [x16]+ idct_8 v16, v17, v18, v19, v20, v21, v22, v23, .8h, .16b
+ ret
+endfunc
+
+function inv_dct_4x8_neon
+ movrel x16, idct_coeffs
+ ld1 {v0.8h}, [x16]+ idct_8 v16, v17, v18, v19, v20, v21, v22, v23, .4h, .8b
+ ret
+endfunc
+
+.macro iadst_8 o0, o1, o2, o3, o4, o5, o6, o7, sz
+ movrel x16, iadst8_coeffs
+ ld1 {v0.8h, v1.8h}, [x16]+
+ smull_smlal v2, v3, v23, v16, v0.h[0], v0.h[1], \sz
+ smull_smlsl v4, v5, v23, v16, v0.h[1], v0.h[0], \sz
+ smull_smlal v6, v7, v21, v18, v0.h[2], v0.h[3], \sz
+ rshrn_sz v16, v2, v3, #12, \sz // t0a
+ rshrn_sz v23, v4, v5, #12, \sz // t1a
+ smull_smlsl v2, v3, v21, v18, v0.h[3], v0.h[2], \sz
+ smull_smlal v4, v5, v19, v20, v0.h[4], v0.h[5], \sz
+ rshrn_sz v18, v6, v7, #12, \sz // t2a
+ rshrn_sz v21, v2, v3, #12, \sz // t3a
+ smull_smlsl v6, v7, v19, v20, v0.h[5], v0.h[4], \sz
+ smull_smlal v2, v3, v17, v22, v0.h[6], v0.h[7], \sz
+ rshrn_sz v20, v4, v5, #12, \sz // t4a
+ rshrn_sz v19, v6, v7, #12, \sz // t5a
+ smull_smlsl v4, v5, v17, v22, v0.h[7], v0.h[6], \sz
+ rshrn_sz v22, v2, v3, #12, \sz // t6a
+ rshrn_sz v17, v4, v5, #12, \sz // t7a
+
+ sqadd v2\sz, v16\sz, v20\sz // t0
+ sqsub v3\sz, v16\sz, v20\sz // t4
+ sqadd v4\sz, v23\sz, v19\sz // t1
+ sqsub v5\sz, v23\sz, v19\sz // t5
+ sqadd v6\sz, v18\sz, v22\sz // t2
+ sqsub v7\sz, v18\sz, v22\sz // t6
+ sqadd v18\sz, v21\sz, v17\sz // t3
+ sqsub v19\sz, v21\sz, v17\sz // t7
+
+ smull_smlal v16, v17, v3, v5, v1.h[3], v1.h[2], \sz
+ smull_smlsl v20, v21, v3, v5, v1.h[2], v1.h[3], \sz
+ smull_smlsl v22, v23, v19, v7, v1.h[3], v1.h[2], \sz
+
+ rshrn_sz v3, v16, v17, #12, \sz // t4a
+ rshrn_sz v5, v20, v21, #12, \sz // t5a
+
+ smull_smlal v16, v17, v19, v7, v1.h[2], v1.h[3], \sz
+
+ rshrn_sz v7, v22, v23, #12, \sz // t6a
+ rshrn_sz v19, v16, v17, #12, \sz // t7a
+
+ sqadd \o0\()\sz, v2\sz, v6\sz // out0
+ sqsub v2\sz, v2\sz, v6\sz // t2
+ sqadd \o7\()\sz, v4\sz, v18\sz // out7
+ sqsub v4\sz, v4\sz, v18\sz // t3
+ sqneg \o7\()\sz, \o7\()\sz // out7
+
+ sqadd \o1\()\sz, v3\sz, v7\sz // out1
+ sqsub v3\sz, v3\sz, v7\sz // t6
+ sqadd \o6\()\sz, v5\sz, v19\sz // out6
+ sqsub v5\sz, v5\sz, v19\sz // t7
+ sqneg \o1\()\sz, \o1\()\sz // out1
+
+ add v6\sz, v2\sz, v4\sz
+ sub v7\sz, v2\sz, v4\sz
+ add v4\sz, v3\sz, v5\sz
+ sub v5\sz, v3\sz, v5\sz
+ sqrdmulh \o3\sz, v6\sz, v1.h[1] // out3
+ sqrdmulh \o4\sz, v7\sz, v1.h[1] // out4
+ sqrdmulh \o2\sz, v4\sz, v1.h[1] // out2
+ sqrdmulh \o5\sz, v5\sz, v1.h[1] // out5
+ neg \o3\()\sz, \o3\()\sz // out3
+ neg \o5\()\sz, \o5\()\sz // out5
+.endm
+
+function inv_adst_8x8_neon
+ iadst_8 v16, v17, v18, v19, v20, v21, v22, v23, .8h
+ ret
+endfunc
+
+function inv_flipadst_8x8_neon
+ iadst_8 v23, v22, v21, v20, v19, v18, v17, v16, .8h
+ ret
+endfunc
+
+function inv_adst_4x8_neon
+ iadst_8 v16, v17, v18, v19, v20, v21, v22, v23, .4h
+ ret
+endfunc
+
+function inv_flipadst_4x8_neon
+ iadst_8 v23, v22, v21, v20, v19, v18, v17, v16, .4h
+ ret
+endfunc
+
+function inv_identity_8x8_neon
+ shl v16.8h, v16.8h, #1
+ shl v17.8h, v17.8h, #1
+ shl v18.8h, v18.8h, #1
+ shl v19.8h, v19.8h, #1
+ shl v20.8h, v20.8h, #1
+ shl v21.8h, v21.8h, #1
+ shl v22.8h, v22.8h, #1
+ shl v23.8h, v23.8h, #1
+ ret
+endfunc
+
+function inv_identity_4x8_neon
+ shl v16.4h, v16.4h, #1
+ shl v17.4h, v17.4h, #1
+ shl v18.4h, v18.4h, #1
+ shl v19.4h, v19.4h, #1
+ shl v20.4h, v20.4h, #1
+ shl v21.4h, v21.4h, #1
+ shl v22.4h, v22.4h, #1
+ shl v23.4h, v23.4h, #1
+ ret
+endfunc
+
+function inv_txfm_add_8x8_neon
+ movi v28.8h, #0
+ movi v29.8h, #0
+ movi v30.8h, #0
+ movi v31.8h, #0
+ ld1 {v16.8h,v17.8h,v18.8h,v19.8h}, [x2]+ st1 {v28.8h,v29.8h,v30.8h,v31.8h}, [x2], #64+ ld1 {v20.8h,v21.8h,v22.8h,v23.8h}, [x2]+ st1 {v28.8h,v29.8h,v30.8h,v31.8h}, [x2]+
+ blr x4
+
+ srshr v16.8h, v16.8h, #1
+ srshr v17.8h, v17.8h, #1
+ srshr v18.8h, v18.8h, #1
+ srshr v19.8h, v19.8h, #1
+ srshr v20.8h, v20.8h, #1
+ srshr v21.8h, v21.8h, #1
+ srshr v22.8h, v22.8h, #1
+ srshr v23.8h, v23.8h, #1
+
+ transpose_8x8h v16, v17, v18, v19, v20, v21, v22, v23, v24, v25
+
+ blr x5
+
+ load_add_store_8x8 x0, x7
+ br x15
+endfunc
+
+.macro def_fn_8x8 txfm1, txfm2
+function inv_txfm_add_\txfm1\()_\txfm2\()_8x8_neon, export=1
+ mov x15, x30
+
+.ifc \txfm1\()_\txfm2, dct_dct
+ idct_dc 8, 8, 1
+.endif
+ adr x4, inv_\txfm1\()_8x8_neon
+ adr x5, inv_\txfm2\()_8x8_neon
+ b inv_txfm_add_8x8_neon
+endfunc
+.endm
+
+def_fn_8x8 dct, dct
+def_fn_8x8 identity, identity
+def_fn_8x8 dct, adst
+def_fn_8x8 dct, flipadst
+def_fn_8x8 dct, identity
+def_fn_8x8 adst, dct
+def_fn_8x8 adst, adst
+def_fn_8x8 adst, flipadst
+def_fn_8x8 flipadst, dct
+def_fn_8x8 flipadst, adst
+def_fn_8x8 flipadst, flipadst
+def_fn_8x8 identity, dct
+def_fn_8x8 adst, identity
+def_fn_8x8 flipadst, identity
+def_fn_8x8 identity, adst
+def_fn_8x8 identity, flipadst
+
+function inv_txfm_add_8x4_neon
+ movi v30.8h, #0
+ movi v31.8h, #0
+ mov w16, #2896*8
+ dup v0.4h, w16
+ ld1 {v16.4h,v17.4h,v18.4h,v19.4h}, [x2]+ st1 {v30.8h,v31.8h}, [x2], #32+ ld1 {v20.4h,v21.4h,v22.4h,v23.4h}, [x2]+ st1 {v30.8h,v31.8h}, [x2]+
+ scale_input .4h, v0.h[0], v16, v17, v18, v19, v20, v21, v22, v23
+
+ blr x4
+
+ transpose_4x4h v16, v17, v18, v19, v4, v5, v6, v7
+ transpose_4x4h v20, v21, v22, v23, v4, v5, v6, v7
+ ins v16.d[1], v20.d[0]
+ ins v17.d[1], v21.d[0]
+ ins v18.d[1], v22.d[0]
+ ins v19.d[1], v23.d[0]
+
+ blr x5
+
+ load_add_store_8x4 x0, x7
+ br x15
+endfunc
+
+function inv_txfm_add_4x8_neon
+ movi v28.8h, #0
+ movi v29.8h, #0
+ movi v30.8h, #0
+ movi v31.8h, #0
+ mov w16, #2896*8
+ dup v0.4h, w16
+ ld1 {v16.8h,v17.8h,v18.8h,v19.8h}, [x2]+ st1 {v28.8h,v29.8h,v30.8h,v31.8h}, [x2]+
+ scale_input .8h, v0.h[0], v16, v17, v18, v19
+
+ blr x4
+
+ transpose_4x8h v16, v17, v18, v19, v4, v5, v6, v7
+ ins v20.d[0], v16.d[1]
+ ins v21.d[0], v17.d[1]
+ ins v22.d[0], v18.d[1]
+ ins v23.d[0], v19.d[1]
+
+ blr x5
+
+ load_add_store_4x8 x0, x7
+ br x15
+endfunc
+
+.macro def_fn_48 w, h, txfm1, txfm2
+function inv_txfm_add_\txfm1\()_\txfm2\()_\w\()x\h\()_neon, export=1
+ mov x15, x30
+
+.ifc \txfm1\()_\txfm2, dct_dct
+ idct_dc \w, \h, 0
+.endif
+ adr x4, inv_\txfm1\()_\h\()x\w\()_neon
+ adr x5, inv_\txfm2\()_\w\()x\h\()_neon
+ b inv_txfm_add_\w\()x\h\()_neon
+endfunc
+.endm
+
+.macro def_fns_48 w, h
+def_fn_48 \w, \h, dct, dct
+def_fn_48 \w, \h, identity, identity
+def_fn_48 \w, \h, dct, adst
+def_fn_48 \w, \h, dct, flipadst
+def_fn_48 \w, \h, dct, identity
+def_fn_48 \w, \h, adst, dct
+def_fn_48 \w, \h, adst, adst
+def_fn_48 \w, \h, adst, flipadst
+def_fn_48 \w, \h, flipadst, dct
+def_fn_48 \w, \h, flipadst, adst
+def_fn_48 \w, \h, flipadst, flipadst
+def_fn_48 \w, \h, identity, dct
+def_fn_48 \w, \h, adst, identity
+def_fn_48 \w, \h, flipadst, identity
+def_fn_48 \w, \h, identity, adst
+def_fn_48 \w, \h, identity, flipadst
+.endm
+
+def_fns_48 4, 8
+def_fns_48 8, 4
+
+
+.macro idct_16 sz, szb
+ idct_8 v16, v18, v20, v22, v24, v26, v28, v30, \sz, \szb
+
+ smull_smlsl v2, v3, v17, v31, v1.h[0], v1.h[1], \sz // -> t8a
+ smull_smlal v4, v5, v17, v31, v1.h[1], v1.h[0], \sz // -> t15a
+ smull_smlsl v6, v7, v25, v23, v1.h[2], v1.h[3], \sz // -> t9a
+ rshrn_sz v17, v2, v3, #12, \sz // t8a
+ rshrn_sz v31, v4, v5, #12, \sz // t15a
+ smull_smlal v2, v3, v25, v23, v1.h[3], v1.h[2], \sz // -> t14a
+ smull_smlsl v4, v5, v21, v27, v1.h[4], v1.h[5], \sz // -> t10a
+ rshrn_sz v23, v6, v7, #12, \sz // t9a
+ rshrn_sz v25, v2, v3, #12, \sz // t14a
+ smull_smlal v6, v7, v21, v27, v1.h[5], v1.h[4], \sz // -> t13a
+ smull_smlsl v2, v3, v29, v19, v1.h[6], v1.h[7], \sz // -> t11a
+ rshrn_sz v21, v4, v5, #12, \sz // t10a
+ rshrn_sz v27, v6, v7, #12, \sz // t13a
+ smull_smlal v4, v5, v29, v19, v1.h[7], v1.h[6], \sz // -> t12a
+ rshrn_sz v19, v2, v3, #12, \sz // t11a
+ rshrn_sz v29, v4, v5, #12, \sz // t12a
+
+ sqsub v2\sz, v17\sz, v23\sz // t9
+ sqadd v17\sz, v17\sz, v23\sz // t8
+ sqsub v3\sz, v31\sz, v25\sz // t14
+ sqadd v31\sz, v31\sz, v25\sz // t15
+ sqsub v23\sz, v19\sz, v21\sz // t10
+ sqadd v19\sz, v19\sz, v21\sz // t11
+ sqadd v25\sz, v29\sz, v27\sz // t12
+ sqsub v29\sz, v29\sz, v27\sz // t13
+
+ smull_smlsl v4, v5, v3, v2, v0.h[2], v0.h[3], \sz // -> t9a
+ smull_smlal v6, v7, v3, v2, v0.h[3], v0.h[2], \sz // -> t14a
+ rshrn_sz v21, v4, v5, #12, \sz // t9a
+ rshrn_sz v27, v6, v7, #12, \sz // t14a
+
+ smull_smlsl v4, v5, v29, v23, v0.h[2], v0.h[3], \sz // -> t13a
+ neg v29\sz, v29\sz
+ smull_smlsl v6, v7, v29, v23, v0.h[3], v0.h[2], \sz // -> t10a
+ rshrn_sz v29, v4, v5, #12, \sz // t13a
+ rshrn_sz v23, v6, v7, #12, \sz // t10a
+
+ sqsub v2\sz, v17\sz, v19\sz // t11a
+ sqadd v17\sz, v17\sz, v19\sz // t8a
+ sqsub v3\sz, v31\sz, v25\sz // t12a
+ sqadd v31\sz, v31\sz, v25\sz // t15a
+ sqadd v19\sz, v21\sz, v23\sz // t9
+ sqsub v21\sz, v21\sz, v23\sz // t10
+ sqsub v25\sz, v27\sz, v29\sz // t13
+ sqadd v27\sz, v27\sz, v29\sz // t14
+
+ sub v23\sz, v3\sz, v2\sz // -> t11
+ add v29\sz, v3\sz, v2\sz // -> t12
+ sub v6\sz, v25\sz, v21\sz // -> t10a
+ add v7\sz, v25\sz, v21\sz // -> t13a
+ sqrdmulh v2\sz, v23\sz, v0.h[1] // t11
+ sqrdmulh v3\sz, v29\sz, v0.h[1] // t12
+ sqrdmulh v4\sz, v6\sz, v0.h[1] // t10a
+ sqrdmulh v5\sz, v7\sz, v0.h[1] // t13a
+
+ sqadd v6\sz, v16\sz, v31\sz // out0
+ sqsub v31\sz, v16\sz, v31\sz // out15
+ mov v16\szb, v6\szb
+ sqadd v23\sz, v30\sz, v17\sz // out7
+ sqsub v7\sz, v30\sz, v17\sz // out8
+ sqadd v17\sz, v18\sz, v27\sz // out1
+ sqsub v30\sz, v18\sz, v27\sz // out14
+ sqadd v18\sz, v20\sz, v5\sz // out2
+ sqsub v29\sz, v20\sz, v5\sz // out13
+ sqadd v5\sz, v28\sz, v19\sz // out6
+ sqsub v25\sz, v28\sz, v19\sz // out9
+ sqadd v19\sz, v22\sz, v3\sz // out3
+ sqsub v28\sz, v22\sz, v3\sz // out12
+ sqadd v20\sz, v24\sz, v2\sz // out4
+ sqsub v27\sz, v24\sz, v2\sz // out11
+ sqadd v21\sz, v26\sz, v4\sz // out5
+ sqsub v26\sz, v26\sz, v4\sz // out10
+ mov v24\szb, v7\szb
+ mov v22\szb, v5\szb
+.endm
+
+function inv_dct_8x16_neon
+ movrel x16, idct_coeffs
+ ld1 {v0.8h, v1.8h}, [x16]+ idct_16 .8h, .16b
+ ret
+endfunc
+
+function inv_dct_4x16_neon
+ movrel x16, idct_coeffs
+ ld1 {v0.8h, v1.8h}, [x16]+ idct_16 .4h, .8b
+ ret
+endfunc
+
+.macro iadst_16 o0, o1, o2, o3, o4, o5, o6, o7, o8, o9, o10, o11, o12, o13, o14, o15, sz, szb
+ movrel x16, iadst16_coeffs
+ ld1 {v0.8h, v1.8h}, [x16]+ movrel x16, idct_coeffs
+
+ smull_smlal v2, v3, v31, v16, v0.h[0], v0.h[1], \sz // -> t0
+ smull_smlsl v4, v5, v31, v16, v0.h[1], v0.h[0], \sz // -> t1
+ smull_smlal v6, v7, v29, v18, v0.h[2], v0.h[3], \sz // -> t2
+ rshrn_sz v16, v2, v3, #12, \sz // t0
+ rshrn_sz v31, v4, v5, #12, \sz // t1
+ smull_smlsl v2, v3, v29, v18, v0.h[3], v0.h[2], \sz // -> t3
+ smull_smlal v4, v5, v27, v20, v0.h[4], v0.h[5], \sz // -> t4
+ rshrn_sz v18, v6, v7, #12, \sz // t2
+ rshrn_sz v29, v2, v3, #12, \sz // t3
+ smull_smlsl v6, v7, v27, v20, v0.h[5], v0.h[4], \sz // -> t5
+ smull_smlal v2, v3, v25, v22, v0.h[6], v0.h[7], \sz // -> t6
+ rshrn_sz v20, v4, v5, #12, \sz // t4
+ rshrn_sz v27, v6, v7, #12, \sz // t5
+ smull_smlsl v4, v5, v25, v22, v0.h[7], v0.h[6], \sz // -> t7
+ smull_smlal v6, v7, v23, v24, v1.h[0], v1.h[1], \sz // -> t8
+ rshrn_sz v22, v2, v3, #12, \sz // t6
+ rshrn_sz v25, v4, v5, #12, \sz // t7
+ smull_smlsl v2, v3, v23, v24, v1.h[1], v1.h[0], \sz // -> t9
+ smull_smlal v4, v5, v21, v26, v1.h[2], v1.h[3], \sz // -> t10
+ rshrn_sz v23, v6, v7, #12, \sz // t8
+ rshrn_sz v24, v2, v3, #12, \sz // t9
+ smull_smlsl v6, v7, v21, v26, v1.h[3], v1.h[2], \sz // -> t11
+ smull_smlal v2, v3, v19, v28, v1.h[4], v1.h[5], \sz // -> t12
+ rshrn_sz v21, v4, v5, #12, \sz // t10
+ rshrn_sz v26, v6, v7, #12, \sz // t11
+ smull_smlsl v4, v5, v19, v28, v1.h[5], v1.h[4], \sz // -> t13
+ smull_smlal v6, v7, v17, v30, v1.h[6], v1.h[7], \sz // -> t14
+ rshrn_sz v19, v2, v3, #12, \sz // t12
+ rshrn_sz v28, v4, v5, #12, \sz // t13
+ smull_smlsl v2, v3, v17, v30, v1.h[7], v1.h[6], \sz // -> t15
+ rshrn_sz v17, v6, v7, #12, \sz // t14
+ rshrn_sz v30, v2, v3, #12, \sz // t15
+
+ ld1 {v0.8h}, [x16]+
+ sqsub v2\sz, v16\sz, v23\sz // t8a
+ sqadd v16\sz, v16\sz, v23\sz // t0a
+ sqsub v3\sz, v31\sz, v24\sz // t9a
+ sqadd v31\sz, v31\sz, v24\sz // t1a
+ sqadd v23\sz, v18\sz, v21\sz // t2a
+ sqsub v18\sz, v18\sz, v21\sz // t10a
+ sqadd v24\sz, v29\sz, v26\sz // t3a
+ sqsub v29\sz, v29\sz, v26\sz // t11a
+ sqadd v21\sz, v20\sz, v19\sz // t4a
+ sqsub v20\sz, v20\sz, v19\sz // t12a
+ sqadd v26\sz, v27\sz, v28\sz // t5a
+ sqsub v27\sz, v27\sz, v28\sz // t13a
+ sqadd v19\sz, v22\sz, v17\sz // t6a
+ sqsub v22\sz, v22\sz, v17\sz // t14a
+ sqadd v28\sz, v25\sz, v30\sz // t7a
+ sqsub v25\sz, v25\sz, v30\sz // t15a
+
+ smull_smlal v4, v5, v2, v3, v0.h[5], v0.h[4], \sz // -> t8
+ smull_smlsl v6, v7, v2, v3, v0.h[4], v0.h[5], \sz // -> t9
+ smull_smlal v2, v3, v18, v29, v0.h[7], v0.h[6], \sz // -> t10
+ rshrn_sz v17, v4, v5, #12, \sz // t8
+ rshrn_sz v30, v6, v7, #12, \sz // t9
+ smull_smlsl v4, v5, v18, v29, v0.h[6], v0.h[7], \sz // -> t11
+ smull_smlsl v6, v7, v27, v20, v0.h[5], v0.h[4], \sz // -> t12
+ rshrn_sz v18, v2, v3, #12, \sz // t10
+ rshrn_sz v29, v4, v5, #12, \sz // t11
+ smull_smlal v2, v3, v27, v20, v0.h[4], v0.h[5], \sz // -> t13
+ smull_smlsl v4, v5, v25, v22, v0.h[7], v0.h[6], \sz // -> t14
+ rshrn_sz v27, v6, v7, #12, \sz // t12
+ rshrn_sz v20, v2, v3, #12, \sz // t13
+ smull_smlal v6, v7, v25, v22, v0.h[6], v0.h[7], \sz // -> t15
+ rshrn_sz v25, v4, v5, #12, \sz // t14
+ rshrn_sz v22, v6, v7, #12, \sz // t15
+
+ sqsub v2\sz, v16\sz, v21\sz // t4
+ sqadd v16\sz, v16\sz, v21\sz // t0
+ sqsub v3\sz, v31\sz, v26\sz // t5
+ sqadd v31\sz, v31\sz, v26\sz // t1
+ sqadd v21\sz, v23\sz, v19\sz // t2
+ sqsub v23\sz, v23\sz, v19\sz // t6
+ sqadd v26\sz, v24\sz, v28\sz // t3
+ sqsub v24\sz, v24\sz, v28\sz // t7
+ sqadd v19\sz, v17\sz, v27\sz // t8a
+ sqsub v17\sz, v17\sz, v27\sz // t12a
+ sqadd v28\sz, v30\sz, v20\sz // t9a
+ sqsub v30\sz, v30\sz, v20\sz // t13a
+ sqadd v27\sz, v18\sz, v25\sz // t10a
+ sqsub v18\sz, v18\sz, v25\sz // t14a
+ sqadd v20\sz, v29\sz, v22\sz // t11a
+ sqsub v29\sz, v29\sz, v22\sz // t15a
+
+ smull_smlal v4, v5, v2, v3, v0.h[3], v0.h[2], \sz // -> t4a
+ smull_smlsl v6, v7, v2, v3, v0.h[2], v0.h[3], \sz // -> t5a
+ smull_smlsl v2, v3, v24, v23, v0.h[3], v0.h[2], \sz // -> t6a
+ rshrn_sz v22, v4, v5, #12, \sz // t4a
+ rshrn_sz v25, v6, v7, #12, \sz // t5a
+ smull_smlal v4, v5, v24, v23, v0.h[2], v0.h[3], \sz // -> t7a
+ smull_smlal v6, v7, v17, v30, v0.h[3], v0.h[2], \sz // -> t12
+ rshrn_sz v24, v2, v3, #12, \sz // t6a
+ rshrn_sz v23, v4, v5, #12, \sz // t7a
+ smull_smlsl v2, v3, v17, v30, v0.h[2], v0.h[3], \sz // -> t13
+ smull_smlsl v4, v5, v29, v18, v0.h[3], v0.h[2], \sz // -> t14
+ rshrn_sz v17, v6, v7, #12, \sz // t12
+ smull_smlal v6, v7, v29, v18, v0.h[2], v0.h[3], \sz // -> t15
+ rshrn_sz v29, v2, v3, #12, \sz // t13
+ rshrn_sz v30, v4, v5, #12, \sz // t14
+ rshrn_sz v18, v6, v7, #12, \sz // t15
+
+ sqsub v2\sz, v16\sz, v21\sz // t2a
+.ifc \o0, v16
+ sqadd \o0\sz, v16\sz, v21\sz // out0
+ sqsub v21\sz, v31\sz, v26\sz // t3a
+ sqadd \o15\sz, v31\sz, v26\sz // out15
+.else
+ sqadd v4\sz, v16\sz, v21\sz // out0
+ sqsub v21\sz, v31\sz, v26\sz // t3a
+ sqadd \o15\sz, v31\sz, v26\sz // out15
+ mov \o0\szb, v4\szb
+.endif
+ sqneg \o15\sz, \o15\sz // out15
+
+ sqsub v3\sz, v29\sz, v18\sz // t15a
+ sqadd \o13\sz, v29\sz, v18\sz // out13
+ sqadd \o2\sz, v17\sz, v30\sz // out2
+ sqsub v26\sz, v17\sz, v30\sz // t14a
+ sqneg \o13\sz, \o13\sz // out13
+
+ sqadd \o1\sz, v19\sz, v27\sz // out1
+ sqsub v27\sz, v19\sz, v27\sz // t10
+ sqadd \o14\sz, v28\sz, v20\sz // out14
+ sqsub v20\sz, v28\sz, v20\sz // t11
+ sqneg \o1\sz, \o1\sz // out1
+
+ sqadd \o3\sz, v22\sz, v24\sz // out3
+ sqsub v22\sz, v22\sz, v24\sz // t6
+ sqadd \o12\sz, v25\sz, v23\sz // out12
+ sqsub v23\sz, v25\sz, v23\sz // t7
+ sqneg \o3\sz, \o3\sz // out3
+
+ sqsub v24\sz, v2\sz, v21\sz // -> out8
+ sqadd v2\sz, v2\sz, v21\sz // -> out7
+ sqadd v21\sz, v26\sz, v3\sz // -> out5
+ sqsub v26\sz, v26\sz, v3\sz // -> out10
+ sqadd v3\sz, v27\sz, v20\sz // -> out6
+ sqsub v25\sz, v27\sz, v20\sz // -> out9
+ sqadd v20\sz, v22\sz, v23\sz // -> out4
+ sqsub v27\sz, v22\sz, v23\sz // -> out11
+
+ sqrdmulh v2\sz, v2\sz, v0.h[1] // out7
+ sqrdmulh v4\sz, v21\sz, v0.h[1] // out5
+ sqrdmulh v5\sz, v25\sz, v0.h[1] // out9
+ sqrdmulh v6\sz, v27\sz, v0.h[1] // out11
+ sqrdmulh \o6\sz, v3\sz, v0.h[1] // out6
+ sqrdmulh \o8\sz, v24\sz, v0.h[1] // out8
+ sqrdmulh \o10\sz, v26\sz, v0.h[1] // out10
+ sqrdmulh \o4\sz, v20\sz, v0.h[1] // out4
+
+ neg \o7\sz, v2\sz // out7
+ neg \o5\sz, v4\sz // out5
+ neg \o9\sz, v5\sz // out9
+ neg \o11\sz, v6\sz // out11
+.endm
+
+function inv_adst_8x16_neon
+ iadst_16 v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, .8h, .16b
+ ret
+endfunc
+
+function inv_flipadst_8x16_neon
+ iadst_16 v31, v30, v29, v28, v27, v26, v25, v24, v23, v22, v21, v20, v19, v18, v17, v16, .8h, .16b
+ ret
+endfunc
+
+function inv_adst_4x16_neon
+ iadst_16 v16, v17, v18, v19, v20, v21, v22, v23, v24, v25, v26, v27, v28, v29, v30, v31, .4h, .8b
+ ret
+endfunc
+
+function inv_flipadst_4x16_neon
+ iadst_16 v31, v30, v29, v28, v27, v26, v25, v24, v23, v22, v21, v20, v19, v18, v17, v16, .4h, .8b
+ ret
+endfunc
+
+function inv_identity_8x16_neon
+ mov w16, #2*5793
+ dup v0.4h, w16
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
+ smull v2.4s, v\i\().4h, v0.h[0]
+ smull2 v3.4s, v\i\().8h, v0.h[0]
+ rshrn v\i\().4h, v2.4s, #12
+ rshrn2 v\i\().8h, v3.4s, #12
+.endr
+ ret
+endfunc
+
+function inv_identity_4x16_neon
+ mov w16, #2*5793
+ dup v0.4h, w16
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
+ smull v2.4s, v\i\().4h, v0.h[0]
+ rshrn v\i\().4h, v2.4s, #12
+.endr
+ ret
+endfunc
+
+function inv_txfm_horz_16x8_neon
+ mov x14, x30
+ movi v7.8h, #0
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
+ ld1 {v\i\().8h}, [x7]+ st1 {v7.8h}, [x7], x8+.endr
+ blr x4
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
+ srshr v\i\().8h, v\i\().8h, #2
+.endr
+ transpose_8x8h v16, v17, v18, v19, v20, v21, v22, v23, v4, v5
+ transpose_8x8h v24, v25, v26, v27, v28, v29, v30, v31, v4, v5
+
+.irp i, 16, 24, 17, 25, 18, 26, 19, 27, 20, 28, 21, 29, 22, 30, 23, 31
+ st1 {v\i\().8h}, [x6], #16+.endr
+
+ br x14
+endfunc
+
+function inv_txfm_horz_scale_16x8_neon
+ mov x14, x30
+ movi v7.8h, #0
+ mov w16, #2896*8
+ dup v0.4h, w16
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
+ ld1 {v\i\().8h}, [x7]+ st1 {v7.8h}, [x7], x8+.endr
+ scale_input .8h, v0.h[0], v16, v17, v18, v19, v20, v21, v22, v23
+ scale_input .8h, v0.h[0], v24, v25, v26, v27, v28, v29, v30, v31
+ blr x4
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
+ srshr v\i\().8h, v\i\().8h, #1
+.endr
+ transpose_8x8h v16, v17, v18, v19, v20, v21, v22, v23, v4, v5
+ transpose_8x8h v24, v25, v26, v27, v28, v29, v30, v31, v4, v5
+
+.irp i, 16, 24, 17, 25, 18, 26, 19, 27, 20, 28, 21, 29, 22, 30, 23, 31
+ st1 {v\i\().8h}, [x6], #16+.endr
+
+ br x14
+endfunc
+
+function inv_txfm_add_vert_8x16_neon
+ mov x14, x30
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
+ ld1 {v\i\().8h}, [x7], x8+.endr
+ blr x5
+ load_add_store_8x16 x6, x7
+ br x14
+endfunc
+
+function inv_txfm_add_16x16_neon
+ mov x15, x30
+ sub sp, sp, #512
+.irp i, 0, 8
+ add x6, sp, #(\i*16*2)
+.if \i == 8
+ cmp w3, w13
+ b.lt 1f
+.endif
+ add x7, x2, #(\i*2)
+ mov x8, #16*2
+ bl inv_txfm_horz_16x8_neon
+.endr
+ b 2f
+1:
+ movi v4.8h, #0
+ movi v5.8h, #0
+ movi v6.8h, #0
+ movi v7.8h, #0
+.rept 4
+ st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x6], #64+.endr
+2:
+.irp i, 0, 8
+ add x6, x0, #(\i)
+ add x7, sp, #(\i*2)
+ mov x8, #32
+ bl inv_txfm_add_vert_8x16_neon
+.endr
+
+ add sp, sp, #512
+ br x15
+endfunc
+
+.macro def_fn_16x16 txfm1, txfm2, eob_half
+function inv_txfm_add_\txfm1\()_\txfm2\()_16x16_neon, export=1
+.ifc \txfm1\()_\txfm2, dct_dct
+ idct_dc 16, 16, 2
+.endif
+ adr x4, inv_\txfm1\()_8x16_neon
+ adr x5, inv_\txfm2\()_8x16_neon
+ mov x13, #\eob_half
+ b inv_txfm_add_16x16_neon
+endfunc
+.endm
+
+def_fn_16x16 dct, dct, 36
+def_fn_16x16 identity, identity, 36
+def_fn_16x16 dct, adst, 36
+def_fn_16x16 dct, flipadst, 36
+def_fn_16x16 dct, identity, 8
+def_fn_16x16 adst, dct, 36
+def_fn_16x16 adst, adst, 36
+def_fn_16x16 adst, flipadst, 36
+def_fn_16x16 flipadst, dct, 36
+def_fn_16x16 flipadst, adst, 36
+def_fn_16x16 flipadst, flipadst, 36
+def_fn_16x16 identity, dct, 8
+
+function inv_txfm_add_16x4_neon
+ mov x15, x30
+ movi v4.8h, #0
+
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
+ ld1 {v\i\().4h}, [x2]+ st1 {v4.4h}, [x2], #8+.endr
+
+ blr x4
+
+ ins v16.d[1], v20.d[0]
+ ins v17.d[1], v21.d[0]
+ ins v18.d[1], v22.d[0]
+ ins v19.d[1], v23.d[0]
+.irp i, 16, 17, 18, 19
+ srshr v\i\().8h, v\i\().8h, #1
+.endr
+ transpose_4x8h v16, v17, v18, v19, v2, v3, v4, v5
+ blr x5
+ mov x6, x0
+ load_add_store_8x4 x6, x7
+
+ ins v24.d[1], v28.d[0]
+ ins v25.d[1], v29.d[0]
+ ins v26.d[1], v30.d[0]
+ ins v27.d[1], v31.d[0]
+ srshr v16.8h, v24.8h, #1
+ srshr v17.8h, v25.8h, #1
+ srshr v18.8h, v26.8h, #1
+ srshr v19.8h, v27.8h, #1
+ transpose_4x8h v16, v17, v18, v19, v2, v3, v4, v5
+ blr x5
+ add x6, x0, #8
+ load_add_store_8x4 x6, x7
+
+ br x15
+endfunc
+
+function inv_txfm_add_4x16_neon
+ mov x15, x30
+ movi v2.8h, #0
+
+ mov x11, #32
+ cmp w3, w13
+ b.lt 1f
+
+ add x6, x2, #16
+.irp i, 16, 17, 18, 19
+ ld1 {v\i\().8h}, [x6]+ st1 {v2.8h}, [x6], x11+.endr
+ blr x4
+ srshr v24.8h, v16.8h, #1
+ srshr v25.8h, v17.8h, #1
+ srshr v26.8h, v18.8h, #1
+ srshr v27.8h, v19.8h, #1
+ transpose_4x8h v24, v25, v26, v27, v4, v5, v6, v7
+ ins v28.d[0], v24.d[1]
+ ins v29.d[0], v25.d[1]
+ ins v30.d[0], v26.d[1]
+ ins v31.d[0], v27.d[1]
+
+ b 2f
+1:
+.irp i, 24, 25, 26, 27, 28, 29, 30, 31
+ movi v\i\().4h, #0
+.endr
+2:
+ movi v2.8h, #0
+.irp i, 16, 17, 18, 19
+ ld1 {v\i\().8h}, [x2]+ st1 {v2.8h}, [x2], x11+.endr
+ blr x4
+.irp i, 16, 17, 18, 19
+ srshr v\i\().8h, v\i\().8h, #1
+.endr
+ transpose_4x8h v16, v17, v18, v19, v4, v5, v6, v7
+ ins v20.d[0], v16.d[1]
+ ins v21.d[0], v17.d[1]
+ ins v22.d[0], v18.d[1]
+ ins v23.d[0], v19.d[1]
+
+ blr x5
+
+ load_add_store_4x16 x0, x6
+
+ br x15
+endfunc
+
+.macro def_fn_416 w, h, txfm1, txfm2, eob_half
+function inv_txfm_add_\txfm1\()_\txfm2\()_\w\()x\h\()_neon, export=1
+.ifc \txfm1\()_\txfm2, dct_dct
+ idct_dc \w, \h, 1
+.endif
+.if \w == 4
+ adr x4, inv_\txfm1\()_8x\w\()_neon
+ adr x5, inv_\txfm2\()_4x\h\()_neon
+ mov w13, #\eob_half
+.else
+ adr x4, inv_\txfm1\()_4x\w\()_neon
+ adr x5, inv_\txfm2\()_8x\h\()_neon
+.endif
+ b inv_txfm_add_\w\()x\h\()_neon
+endfunc
+.endm
+
+.macro def_fns_416 w, h
+def_fn_416 \w, \h, dct, dct, 29
+def_fn_416 \w, \h, identity, identity, 29
+def_fn_416 \w, \h, dct, adst, 29
+def_fn_416 \w, \h, dct, flipadst, 29
+def_fn_416 \w, \h, dct, identity, 8
+def_fn_416 \w, \h, adst, dct, 29
+def_fn_416 \w, \h, adst, adst, 29
+def_fn_416 \w, \h, adst, flipadst, 29
+def_fn_416 \w, \h, flipadst, dct, 29
+def_fn_416 \w, \h, flipadst, adst, 29
+def_fn_416 \w, \h, flipadst, flipadst, 29
+def_fn_416 \w, \h, identity, dct, 32
+def_fn_416 \w, \h, adst, identity, 8
+def_fn_416 \w, \h, flipadst, identity, 8
+def_fn_416 \w, \h, identity, adst, 32
+def_fn_416 \w, \h, identity, flipadst, 32
+.endm
+
+def_fns_416 4, 16
+def_fns_416 16, 4
+
+
+function inv_txfm_add_16x8_neon
+ mov x15, x30
+ movi v4.8h, #0
+ mov w16, #2896*8
+ dup v0.4h, w16
+
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
+ ld1 {v\i\().8h}, [x2]+ st1 {v4.8h}, [x2], #16+.endr
+
+ scale_input .8h, v0.h[0], v16, v17, v18, v19, v20, v21, v22, v23
+ scale_input .8h, v0.h[0], v24, v25, v26, v27, v28, v29, v30, v31
+ blr x4
+
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23
+ srshr v\i\().8h, v\i\().8h, #1
+.endr
+ transpose_8x8h v16, v17, v18, v19, v20, v21, v22, v23, v2, v3
+
+ blr x5
+
+ mov x6, x0
+ load_add_store_8x8 x6, x7
+
+ srshr v16.8h, v24.8h, #1
+ srshr v17.8h, v25.8h, #1
+ srshr v18.8h, v26.8h, #1
+ srshr v19.8h, v27.8h, #1
+ srshr v20.8h, v28.8h, #1
+ srshr v21.8h, v29.8h, #1
+ srshr v22.8h, v30.8h, #1
+ srshr v23.8h, v31.8h, #1
+
+ transpose_8x8h v16, v17, v18, v19, v20, v21, v22, v23, v2, v3
+
+ blr x5
+
+ add x0, x0, #8
+ load_add_store_8x8 x0, x7
+
+ br x15
+endfunc
+
+function inv_txfm_add_8x16_neon
+ mov x15, x30
+ movi v4.8h, #0
+ mov w16, #2896*8
+ dup v0.4h, w16
+ mov x11, #32
+
+ cmp w3, w13
+ b.lt 1f
+
+ add x6, x2, #16
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23
+ ld1 {v\i\().8h}, [x6]+ st1 {v4.8h}, [x6], x11+.endr
+ scale_input .8h, v0.h[0], v16, v17, v18, v19, v20, v21, v22, v23
+ blr x4
+
+ srshr v24.8h, v16.8h, #1
+ srshr v25.8h, v17.8h, #1
+ srshr v26.8h, v18.8h, #1
+ srshr v27.8h, v19.8h, #1
+ srshr v28.8h, v20.8h, #1
+ srshr v29.8h, v21.8h, #1
+ srshr v30.8h, v22.8h, #1
+ srshr v31.8h, v23.8h, #1
+ transpose_8x8h v24, v25, v26, v27, v28, v29, v30, v31, v2, v3
+
+ b 2f
+
+1:
+.irp i, 24, 25, 26, 27, 28, 29, 30, 31
+ movi v\i\().8h, #0
+.endr
+
+2:
+ movi v4.8h, #0
+ mov w16, #2896*8
+ dup v0.4h, w16
+
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23
+ ld1 {v\i\().8h}, [x2]+ st1 {v4.8h}, [x2], x11+.endr
+ scale_input .8h, v0.h[0], v16, v17, v18, v19, v20, v21, v22, v23
+ blr x4
+
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23
+ srshr v\i\().8h, v\i\().8h, #1
+.endr
+
+ transpose_8x8h v16, v17, v18, v19, v20, v21, v22, v23, v2, v3
+
+ blr x5
+
+ load_add_store_8x16 x0, x6
+
+ br x15
+endfunc
+
+.macro def_fn_816 w, h, txfm1, txfm2, eob_half
+function inv_txfm_add_\txfm1\()_\txfm2\()_\w\()x\h\()_neon, export=1
+.ifc \txfm1\()_\txfm2, dct_dct
+ idct_dc \w, \h, 1
+.endif
+ adr x4, inv_\txfm1\()_8x\w\()_neon
+ adr x5, inv_\txfm2\()_8x\h\()_neon
+.if \w == 8
+ mov x13, #\eob_half
+.endif
+ b inv_txfm_add_\w\()x\h\()_neon
+endfunc
+.endm
+
+.macro def_fns_816 w, h
+def_fn_816 \w, \h, dct, dct, 43
+def_fn_816 \w, \h, identity, identity, 43
+def_fn_816 \w, \h, dct, adst, 43
+def_fn_816 \w, \h, dct, flipadst, 43
+def_fn_816 \w, \h, dct, identity, 8
+def_fn_816 \w, \h, adst, dct, 43
+def_fn_816 \w, \h, adst, adst, 43
+def_fn_816 \w, \h, adst, flipadst, 43
+def_fn_816 \w, \h, flipadst, dct, 43
+def_fn_816 \w, \h, flipadst, adst, 43
+def_fn_816 \w, \h, flipadst, flipadst, 43
+def_fn_816 \w, \h, identity, dct, 64
+def_fn_816 \w, \h, adst, identity, 8
+def_fn_816 \w, \h, flipadst, identity, 8
+def_fn_816 \w, \h, identity, adst, 64
+def_fn_816 \w, \h, identity, flipadst, 64
+.endm
+
+def_fns_816 8, 16
+def_fns_816 16, 8
+
+function inv_dct32_odd_8x16_neon
+ movrel x16, idct_coeffs, 2*16
+ ld1 {v0.8h, v1.8h}, [x16]+ sub x16, x16, #2*16
+
+ smull_smlsl v2, v3, v16, v31, v0.h[0], v0.h[1], .8h // -> t16a
+ smull_smlal v4, v5, v16, v31, v0.h[1], v0.h[0], .8h // -> t31a
+ smull_smlsl v6, v7, v24, v23, v0.h[2], v0.h[3], .8h // -> t17a
+ rshrn_sz v16, v2, v3, #12, .8h // t16a
+ rshrn_sz v31, v4, v5, #12, .8h // t31a
+ smull_smlal v2, v3, v24, v23, v0.h[3], v0.h[2], .8h // -> t30a
+ smull_smlsl v4, v5, v20, v27, v0.h[4], v0.h[5], .8h // -> t18a
+ rshrn_sz v24, v6, v7, #12, .8h // t17a
+ rshrn_sz v23, v2, v3, #12, .8h // t30a
+ smull_smlal v6, v7, v20, v27, v0.h[5], v0.h[4], .8h // -> t29a
+ smull_smlsl v2, v3, v28, v19, v0.h[6], v0.h[7], .8h // -> t19a
+ rshrn_sz v20, v4, v5, #12, .8h // t18a
+ rshrn_sz v27, v6, v7, #12, .8h // t29a
+ smull_smlal v4, v5, v28, v19, v0.h[7], v0.h[6], .8h // -> t28a
+ smull_smlsl v6, v7, v18, v29, v1.h[0], v1.h[1], .8h // -> t20a
+ rshrn_sz v28, v2, v3, #12, .8h // t19a
+ rshrn_sz v19, v4, v5, #12, .8h // t28a
+ smull_smlal v2, v3, v18, v29, v1.h[1], v1.h[0], .8h // -> t27a
+ smull_smlsl v4, v5, v26, v21, v1.h[2], v1.h[3], .8h // -> t21a
+ rshrn_sz v18, v6, v7, #12, .8h // t20a
+ rshrn_sz v29, v2, v3, #12, .8h // t27a
+ smull_smlal v6, v7, v26, v21, v1.h[3], v1.h[2], .8h // -> t26a
+ smull_smlsl v2, v3, v22, v25, v1.h[4], v1.h[5], .8h // -> t22a
+ rshrn_sz v26, v4, v5, #12, .8h // t21a
+ rshrn_sz v21, v6, v7, #12, .8h // t26a
+ smull_smlal v4, v5, v22, v25, v1.h[5], v1.h[4], .8h // -> t25a
+ smull_smlsl v6, v7, v30, v17, v1.h[6], v1.h[7], .8h // -> t23a
+ rshrn_sz v22, v2, v3, #12, .8h // t22a
+ rshrn_sz v25, v4, v5, #12, .8h // t25a
+ smull_smlal v2, v3, v30, v17, v1.h[7], v1.h[6], .8h // -> t24a
+ rshrn_sz v30, v6, v7, #12, .8h // t23a
+ rshrn_sz v17, v2, v3, #12, .8h // t24a
+
+ ld1 {v0.8h}, [x16]+
+ sqsub v2.8h, v16.8h, v24.8h // t17
+ sqadd v16.8h, v16.8h, v24.8h // t16
+ sqsub v3.8h, v31.8h, v23.8h // t30
+ sqadd v31.8h, v31.8h, v23.8h // t31
+ sqsub v24.8h, v28.8h, v20.8h // t18
+ sqadd v28.8h, v28.8h, v20.8h // t19
+ sqadd v23.8h, v18.8h, v26.8h // t20
+ sqsub v18.8h, v18.8h, v26.8h // t21
+ sqsub v20.8h, v30.8h, v22.8h // t22
+ sqadd v30.8h, v30.8h, v22.8h // t23
+ sqadd v26.8h, v17.8h, v25.8h // t24
+ sqsub v17.8h, v17.8h, v25.8h // t25
+ sqsub v22.8h, v29.8h, v21.8h // t26
+ sqadd v29.8h, v29.8h, v21.8h // t27
+ sqadd v25.8h, v19.8h, v27.8h // t28
+ sqsub v19.8h, v19.8h, v27.8h // t29
+
+ smull_smlsl v4, v5, v3, v2, v0.h[4], v0.h[5], .8h // -> t17a
+ smull_smlal v6, v7, v3, v2, v0.h[5], v0.h[4], .8h // -> t30a
+ smull_smlal v2, v3, v19, v24, v0.h[5], v0.h[4], .8h // -> t18a
+ rshrn_sz v21, v4, v5, #12, .8h // t17a
+ rshrn_sz v27, v6, v7, #12, .8h // t30a
+ neg v2.4s, v2.4s // -> t18a
+ neg v3.4s, v3.4s // -> t18a
+ smull_smlsl v4, v5, v19, v24, v0.h[4], v0.h[5], .8h // -> t29a
+ smull_smlsl v6, v7, v22, v18, v0.h[6], v0.h[7], .8h // -> t21a
+ rshrn_sz v19, v2, v3, #12, .8h // t18a
+ rshrn_sz v24, v4, v5, #12, .8h // t29a
+ smull_smlal v2, v3, v22, v18, v0.h[7], v0.h[6], .8h // -> t26a
+ smull_smlal v4, v5, v17, v20, v0.h[7], v0.h[6], .8h // -> t22a
+ rshrn_sz v22, v6, v7, #12, .8h // t21a
+ rshrn_sz v18, v2, v3, #12, .8h // t26a
+ neg v4.4s, v4.4s // -> t22a
+ neg v5.4s, v5.4s // -> t22a
+ smull_smlsl v6, v7, v17, v20, v0.h[6], v0.h[7], .8h // -> t25a
+ rshrn_sz v17, v4, v5, #12, .8h // t22a
+ rshrn_sz v20, v6, v7, #12, .8h // t25a
+
+ sqsub v2.8h, v27.8h, v24.8h // t29
+ sqadd v27.8h, v27.8h, v24.8h // t30
+ sqsub v3.8h, v21.8h, v19.8h // t18
+ sqadd v21.8h, v21.8h, v19.8h // t17
+ sqsub v24.8h, v16.8h, v28.8h // t19a
+ sqadd v16.8h, v16.8h, v28.8h // t16a
+ sqsub v19.8h, v30.8h, v23.8h // t20a
+ sqadd v30.8h, v30.8h, v23.8h // t23a
+ sqsub v28.8h, v17.8h, v22.8h // t21
+ sqadd v17.8h, v17.8h, v22.8h // t22
+ sqadd v23.8h, v26.8h, v29.8h // t24a
+ sqsub v26.8h, v26.8h, v29.8h // t27a
+ sqadd v22.8h, v20.8h, v18.8h // t25
+ sqsub v20.8h, v20.8h, v18.8h // t26
+ sqsub v29.8h, v31.8h, v25.8h // t28a
+ sqadd v31.8h, v31.8h, v25.8h // t31a
+
+ smull_smlsl v4, v5, v2, v3, v0.h[2], v0.h[3], .8h // -> t18a
+ smull_smlal v6, v7, v2, v3, v0.h[3], v0.h[2], .8h // -> t29a
+ smull_smlsl v2, v3, v29, v24, v0.h[2], v0.h[3], .8h // -> t19
+ rshrn_sz v18, v4, v5, #12, .8h // t18a
+ rshrn_sz v25, v6, v7, #12, .8h // t29a
+ smull_smlal v4, v5, v29, v24, v0.h[3], v0.h[2], .8h // -> t28
+ smull_smlal v6, v7, v26, v19, v0.h[3], v0.h[2], .8h // -> t20
+ rshrn_sz v29, v2, v3, #12, .8h // t19
+ rshrn_sz v24, v4, v5, #12, .8h // t28
+ neg v6.4s, v6.4s // -> t20
+ neg v7.4s, v7.4s // -> t20
+ smull_smlsl v2, v3, v26, v19, v0.h[2], v0.h[3], .8h // -> t27
+ smull_smlal v4, v5, v20, v28, v0.h[3], v0.h[2], .8h // -> t21a
+ rshrn_sz v26, v6, v7, #12, .8h // t20
+ rshrn_sz v19, v2, v3, #12, .8h // t27
+ neg v4.4s, v4.4s // -> t21a
+ neg v5.4s, v5.4s // -> t21a
+ smull_smlsl v6, v7, v20, v28, v0.h[2], v0.h[3], .8h // -> t26a
+ rshrn_sz v20, v4, v5, #12, .8h // t21a
+ rshrn_sz v28, v6, v7, #12, .8h // t26a
+
+ sqsub v2.8h, v16.8h, v30.8h // t23
+ sqadd v16.8h, v16.8h, v30.8h // t16 = out16
+ sqsub v3.8h, v31.8h, v23.8h // t24
+ sqadd v31.8h, v31.8h, v23.8h // t31 = out31
+ sqsub v23.8h, v21.8h, v17.8h // t22a
+ sqadd v17.8h, v21.8h, v17.8h // t17a = out17
+ sqadd v30.8h, v27.8h, v22.8h // t30a = out30
+ sqsub v21.8h, v27.8h, v22.8h // t25a
+ sqsub v27.8h, v18.8h, v20.8h // t21
+ sqadd v18.8h, v18.8h, v20.8h // t18 = out18
+ sqadd v4.8h, v29.8h, v26.8h // t19a = out19
+ sqsub v26.8h, v29.8h, v26.8h // t20a
+ sqadd v29.8h, v25.8h, v28.8h // t29 = out29
+ sqsub v25.8h, v25.8h, v28.8h // t26
+ sqadd v28.8h, v24.8h, v19.8h // t28a = out28
+ sqsub v24.8h, v24.8h, v19.8h // t27a
+ mov v19.16b, v4.16b // out19
+
+ sub v20.8h, v24.8h, v26.8h // -> t20
+ add v4.8h, v24.8h, v26.8h // -> t27
+ sub v5.8h, v25.8h, v27.8h // -> t21a
+ add v26.8h, v25.8h, v27.8h // -> t26a
+ sqrdmulh v20.8h, v20.8h, v0.h[1] // t20 = out20
+ sqrdmulh v27.8h, v4.8h, v0.h[1] // t27 = out27
+ sub v22.8h, v21.8h, v23.8h // -> t22
+ add v25.8h, v21.8h, v23.8h // -> t25
+ sqrdmulh v21.8h, v5.8h, v0.h[1] // t21a = out21
+ sqrdmulh v26.8h, v26.8h, v0.h[1] // t26a = out26
+ sub v23.8h, v3.8h, v2.8h // -> t23a
+ add v24.8h, v3.8h, v2.8h // -> t24a
+ sqrdmulh v22.8h, v22.8h, v0.h[1] // t22 = out22
+ sqrdmulh v25.8h, v25.8h, v0.h[1] // t25 = out25
+ sqrdmulh v23.8h, v23.8h, v0.h[1] // t23a = out23
+ sqrdmulh v24.8h, v24.8h, v0.h[1] // t24a = out24
+
+ ret
+endfunc
+
+.macro def_horz_32 scale=0, shift=2, suffix
+function inv_txfm_horz\suffix\()_dct_32x8_neon
+ mov x14, x30
+ movi v7.8h, #0
+ lsl x8, x8, #1
+.if \scale
+ mov w16, #2896*8
+ dup v0.4h, w16
+.endif
+
+.irp i, v16.8h, v17.8h, v18.8h, v19.8h, v20.8h, v21.8h, v22.8h, v23.8h, v24.8h, v25.8h, v26.8h, v27.8h, v28.8h, v29.8h, v30.8h, v31.8h
+ ld1 {\i}, [x7]+ st1 {v7.8h}, [x7], x8+.endr
+ sub x7, x7, x8, lsl #4
+ add x7, x7, x8, lsr #1
+.if \scale
+ scale_input .8h, v0.h[0], v16, v17, v18, v19, v20, v21, v22, v23
+ scale_input .8h, v0.h[0], v24, v25, v26, v27, v28, v29, v30, v31
+.endif
+ bl inv_dct_8x16_neon
+ transpose_8x8h v16, v17, v18, v19, v20, v21, v22, v23, v4, v5
+ transpose_8x8h v24, v25, v26, v27, v28, v29, v30, v31, v4, v5
+
+.macro store1 r0, r1
+ st1 {\r0}, [x6], #16+ st1 {\r1}, [x6], #16+ add x6, x6, #32
+.endm
+ store1 v16.8h, v24.8h
+ store1 v17.8h, v25.8h
+ store1 v18.8h, v26.8h
+ store1 v19.8h, v27.8h
+ store1 v20.8h, v28.8h
+ store1 v21.8h, v29.8h
+ store1 v22.8h, v30.8h
+ store1 v23.8h, v31.8h
+.purgem store1
+ sub x6, x6, #64*8
+
+ movi v7.8h, #0
+.irp i, v16.8h, v17.8h, v18.8h, v19.8h, v20.8h, v21.8h, v22.8h, v23.8h, v24.8h, v25.8h, v26.8h, v27.8h, v28.8h, v29.8h, v30.8h, v31.8h
+ ld1 {\i}, [x7]+ st1 {v7.8h}, [x7], x8+.endr
+.if \scale
+ // This relies on the fact that the idct also leaves the right coeff in v0.h[1]
+ scale_input .8h, v0.h[1], v16, v17, v18, v19, v20, v21, v22, v23
+ scale_input .8h, v0.h[1], v24, v25, v26, v27, v28, v29, v30, v31
+.endif
+ bl inv_dct32_odd_8x16_neon
+ transpose_8x8h v31, v30, v29, v28, v27, v26, v25, v24, v4, v5
+ transpose_8x8h v23, v22, v21, v20, v19, v18, v17, v16, v4, v5
+.macro store2 r0, r1, shift
+ ld1 {v4.8h}, [x6], #16+ ld1 {v5.8h}, [x6]+ sqsub v7.8h, v4.8h, \r0
+ sqsub v6.8h, v5.8h, \r1
+ sub x6, x6, #16
+ sqadd v4.8h, v4.8h, \r0
+ sqadd v5.8h, v5.8h, \r1
+ rev64 v6.8h, v6.8h
+ rev64 v7.8h, v7.8h
+ srshr v4.8h, v4.8h, #\shift
+ srshr v5.8h, v5.8h, #\shift
+ srshr v6.8h, v6.8h, #\shift
+ srshr v7.8h, v7.8h, #\shift
+ st1 {v4.8h}, [x6], #16+ ext v6.16b, v6.16b, v6.16b, #8
+ st1 {v5.8h}, [x6], #16+ ext v7.16b, v7.16b, v7.16b, #8
+ st1 {v6.8h}, [x6], #16+ st1 {v7.8h}, [x6], #16+.endm
+
+ store2 v31.8h, v23.8h, \shift
+ store2 v30.8h, v22.8h, \shift
+ store2 v29.8h, v21.8h, \shift
+ store2 v28.8h, v20.8h, \shift
+ store2 v27.8h, v19.8h, \shift
+ store2 v26.8h, v18.8h, \shift
+ store2 v25.8h, v17.8h, \shift
+ store2 v24.8h, v16.8h, \shift
+.purgem store2
+ br x14
+endfunc
+.endm
+
+def_horz_32 scale=0, shift=2
+def_horz_32 scale=1, shift=1, suffix=_scale
+
+function inv_txfm_add_vert_dct_8x32_neon
+ mov x14, x30
+ lsl x8, x8, #1
+
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
+ ld1 {v\i\().8h}, [x7], x8+.endr
+ sub x7, x7, x8, lsl #4
+
+ bl inv_dct_8x16_neon
+
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
+ st1 {v\i\().8h}, [x7], x8+.endr
+ sub x7, x7, x8, lsl #4
+ add x7, x7, x8, lsr #1
+
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
+ ld1 {v\i\().8h}, [x7], x8+.endr
+ sub x7, x7, x8, lsl #4
+ sub x7, x7, x8, lsr #1
+ bl inv_dct32_odd_8x16_neon
+
+ neg x9, x8
+ mov x10, x6
+.macro combine r0, r1, r2, r3, op, stride
+ ld1 {v5.8h}, [x7], \stride+ ld1 {v2.8b}, [x10], x1+ ld1 {v6.8h}, [x7], \stride+ ld1 {v3.8b}, [x10], x1+ \op v5.8h, v5.8h, \r0
+ ld1 {v7.8h}, [x7], \stride+ ld1 {v4.8b}, [x10], x1+ srshr v5.8h, v5.8h, #4
+ \op v6.8h, v6.8h, \r1
+ uaddw v5.8h, v5.8h, v2.8b
+ srshr v6.8h, v6.8h, #4
+ \op v7.8h, v7.8h, \r2
+ sqxtun v2.8b, v5.8h
+ ld1 {v5.8h}, [x7], \stride+ uaddw v6.8h, v6.8h, v3.8b
+ srshr v7.8h, v7.8h, #4
+ \op v5.8h, v5.8h, \r3
+ st1 {v2.8b}, [x6], x1+ ld1 {v2.8b}, [x10], x1+ sqxtun v3.8b, v6.8h
+ uaddw v7.8h, v7.8h, v4.8b
+ srshr v5.8h, v5.8h, #4
+ st1 {v3.8b}, [x6], x1+ sqxtun v4.8b, v7.8h
+ uaddw v5.8h, v5.8h, v2.8b
+ st1 {v4.8b}, [x6], x1+ sqxtun v2.8b, v5.8h
+ st1 {v2.8b}, [x6], x1+.endm
+ combine v31.8h, v30.8h, v29.8h, v28.8h, sqadd, x8
+ combine v27.8h, v26.8h, v25.8h, v24.8h, sqadd, x8
+ combine v23.8h, v22.8h, v21.8h, v20.8h, sqadd, x8
+ combine v19.8h, v18.8h, v17.8h, v16.8h, sqadd, x8
+ sub x7, x7, x8
+ combine v16.8h, v17.8h, v18.8h, v19.8h, sqsub, x9
+ combine v20.8h, v21.8h, v22.8h, v23.8h, sqsub, x9
+ combine v24.8h, v25.8h, v26.8h, v27.8h, sqsub, x9
+ combine v28.8h, v29.8h, v30.8h, v31.8h, sqsub, x9
+.purgem combine
+
+ br x14
+endfunc
+
+const eob_32x32
+ .short 36, 136, 300, 1024
+endconst
+
+const eob_16x32
+ .short 36, 151, 279, 512
+endconst
+
+const eob_16x32_shortside
+ .short 36, 512
+endconst
+
+const eob_8x32
+ .short 43, 107, 171, 256
+endconst
+
+function inv_txfm_add_identity_identity_32x32_neon, export=1
+ movi v0.8h, #0
+ movrel x13, eob_32x32
+
+ mov x8, #2*32
+1:
+ mov w9, #0
+ movrel x12, eob_32x32
+2:
+ add w9, w9, #8
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23
+ ld1 {v\i\().8h}, [x2]+ st1 {v0.8h}, [x2], x8+.endr
+ transpose_8x8h v16, v17, v18, v19, v20, v21, v22, v23, v4, v5
+
+ load_add_store_8x8 x0, x7, shiftbits=2
+ ldrh w11, [x12], #2
+ sub x0, x0, x1, lsl #3
+ add x0, x0, #8
+ cmp w3, w11
+ b.ge 2b
+
+ ldrh w11, [x13], #2
+ cmp w3, w11
+ b.lt 9f
+
+ sub x0, x0, w9, uxtw
+ add x0, x0, x1, lsl #3
+ msub x2, x8, x9, x2
+ add x2, x2, #2*8
+ b 1b
+9:
+ ret
+endfunc
+
+.macro shift_8_regs op, shift
+.irp i, v16.8h, v17.8h, v18.8h, v19.8h, v20.8h, v21.8h, v22.8h, v23.8h
+ \op \i, \i, #\shift
+.endr
+.endm
+
+.macro def_identity_1632 w, h, wshort, hshort
+function inv_txfm_add_identity_identity_\w\()x\h\()_neon, export=1
+ mov w16, #2896*8
+ mov w17, #2*5793
+ dup v1.4h, w16
+ movi v0.8h, #0
+ mov v1.h[1], w17
+ movrel x13, eob_16x32\hshort
+
+ mov x8, #2*\h
+1:
+ mov w9, #0
+ movrel x12, eob_16x32\wshort
+2:
+ add w9, w9, #8
+.irp i, v16.8h, v17.8h, v18.8h, v19.8h, v20.8h, v21.8h, v22.8h, v23.8h
+ ld1 {\i}, [x2]+ st1 {v0.8h}, [x2], x8+.endr
+ scale_input .8h, v1.h[0], v16, v17, v18, v19, v20, v21, v22, v23
+
+.if \w == 16
+ // 16x32
+ scale_wide .8h, v1.h[1], v16, v17, v18, v19, v20, v21, v22, v23
+ shift_8_regs srshr, 1
+.else
+ // 32x16
+ shift_8_regs shl, 1
+ scale_wide .8h, v1.h[1], v16, v17, v18, v19, v20, v21, v22, v23
+.endif
+
+ transpose_8x8h v16, v17, v18, v19, v20, v21, v22, v23, v4, v5
+
+.if \w == 16
+ load_add_store_8x8 x0, x7, shiftbits=2
+.else
+ load_add_store_8x8 x0, x7, shiftbits=4
+.endif
+ ldrh w11, [x12], #2
+ sub x0, x0, x1, lsl #3
+ add x0, x0, #8
+ cmp w3, w11
+ b.ge 2b
+
+ ldrh w11, [x13], #2
+ cmp w3, w11
+ b.lt 9f
+
+ sub x0, x0, w9, uxtw
+ add x0, x0, x1, lsl #3
+ msub x2, x8, x9, x2
+ add x2, x2, #2*8
+ b 1b
+9:
+ ret
+endfunc
+.endm
+
+def_identity_1632 16, 32, _shortside,
+def_identity_1632 32, 16, , _shortside
+
+.macro def_identity_832 w, h
+function inv_txfm_add_identity_identity_\w\()x\h\()_neon, export=1
+ movi v0.8h, #0
+ movrel x13, eob_8x32
+
+ mov w8, #2*\h
+1:
+.irp i, v16.8h, v17.8h, v18.8h, v19.8h, v20.8h, v21.8h, v22.8h, v23.8h
+ ld1 {\i}, [x2]+ st1 {v0.8h}, [x2], x8+.endr
+
+.if \w == 8
+ // 8x32
+ shift_8_regs srshr, 1
+.endif
+
+ transpose_8x8h v16, v17, v18, v19, v20, v21, v22, v23, v4, v5
+
+.if \w == 8
+ load_add_store_8x8 x0, x7, shiftbits=2
+.else
+ load_add_store_8x8 x0, x7, shiftbits=3
+.endif
+
+ ldrh w12, [x13], #2
+ cmp w3, w12
+ b.lt 9f
+.if \w == 8
+ sub x2, x2, x8, lsl #3
+ add x2, x2, #2*8
+.else
+ sub x0, x0, x1, lsl #3
+ add x0, x0, #8
+.endif
+ b 1b
+
+9:
+ ret
+endfunc
+.endm
+
+def_identity_832 8, 32
+def_identity_832 32, 8
+
+function inv_txfm_add_dct_dct_32x32_neon, export=1
+ idct_dc 32, 32, 2
+
+ mov x15, x30
+ sub sp, sp, #2048
+ movrel x13, eob_32x32
+ ldrh w12, [x13], #2
+
+.irp i, 0, 8, 16, 24
+ add x6, sp, #(\i*32*2)
+.if \i > 0
+ mov w8, #(32 - \i)
+ cmp w3, w12
+ b.lt 1f
+.if \i < 24
+ ldrh w12, [x13], #2
+.endif
+.endif
+ add x7, x2, #(\i*2)
+ mov x8, #32*2
+ bl inv_txfm_horz_dct_32x8_neon
+.endr
+ b 3f
+
+1:
+ movi v4.8h, #0
+ movi v5.8h, #0
+ movi v6.8h, #0
+ movi v7.8h, #0
+2:
+ subs w8, w8, #4
+.rept 4
+ st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x6], #64+.endr
+ b.gt 2b
+
+3:
+.irp i, 0, 8, 16, 24
+ add x6, x0, #(\i)
+ add x7, sp, #(\i*2)
+ mov x8, #32*2
+ bl inv_txfm_add_vert_dct_8x32_neon
+.endr
+
+ add sp, sp, #2048
+ br x15
+endfunc
+
+function inv_txfm_add_dct_dct_16x32_neon, export=1
+ idct_dc 16, 32, 1
+
+ mov x15, x30
+ sub sp, sp, #1024
+ movrel x13, eob_16x32
+ ldrh w12, [x13], #2
+ adr x4, inv_dct_8x16_neon
+
+.irp i, 0, 8, 16, 24
+ add x6, sp, #(\i*16*2)
+ add x7, x2, #(\i*2)
+.if \i > 0
+ mov w8, #(32 - \i)
+ cmp w3, w12
+ b.lt 1f
+.if \i < 24
+ ldrh w12, [x13], #2
+.endif
+.endif
+ mov x8, #2*32
+ bl inv_txfm_horz_scale_16x8_neon
+.endr
+ b 3f
+
+1:
+ movi v4.8h, #0
+ movi v5.8h, #0
+ movi v6.8h, #0
+ movi v7.8h, #0
+2:
+ subs w8, w8, #8
+.rept 4
+ st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x6], #64+.endr
+ b.gt 2b
+
+3:
+.irp i, 0, 8
+ add x6, x0, #(\i)
+ add x7, sp, #(\i*2)
+ mov x8, #16*2
+ bl inv_txfm_add_vert_dct_8x32_neon
+.endr
+
+ add sp, sp, #1024
+ br x15
+endfunc
+
+function inv_txfm_add_dct_dct_32x16_neon, export=1
+ idct_dc 32, 16, 1
+
+ mov x15, x30
+ sub sp, sp, #1024
+
+ adr x5, inv_dct_8x16_neon
+
+.irp i, 0, 8
+ add x6, sp, #(\i*32*2)
+ add x7, x2, #(\i*2)
+.if \i > 0
+ mov w8, #(16 - \i)
+ cmp w3, #36
+ b.lt 1f
+.endif
+ mov x8, #2*16
+ bl inv_txfm_horz_scale_dct_32x8_neon
+.endr
+ b 3f
+
+1:
+ movi v4.8h, #0
+ movi v5.8h, #0
+ movi v6.8h, #0
+ movi v7.8h, #0
+2:
+ subs w8, w8, #4
+.rept 4
+ st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x6], #64+.endr
+ b.gt 2b
+
+3:
+.irp i, 0, 8, 16, 24
+ add x6, x0, #(\i)
+ add x7, sp, #(\i*2)
+ mov x8, #32*2
+ bl inv_txfm_add_vert_8x16_neon
+.endr
+
+ add sp, sp, #1024
+ br x15
+endfunc
+
+function inv_txfm_add_dct_dct_8x32_neon, export=1
+ idct_dc 8, 32, 2
+
+ mov x15, x30
+ sub sp, sp, #512
+
+ movrel x13, eob_8x32
+
+ movi v28.8h, #0
+ mov x8, #2*32
+ mov w9, #32
+ mov x6, sp
+ mov x7, x2
+1:
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23
+ ld1 {v\i\().8h}, [x7]+ st1 {v28.8h}, [x7], x8+.endr
+ ldrh w12, [x13], #2
+ sub w9, w9, #8
+ sub x7, x7, x8, lsl #3
+ add x7, x7, #2*8
+
+ bl inv_dct_8x8_neon
+
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23
+ srshr v\i\().8h, v\i\().8h, #2
+.endr
+
+ transpose_8x8h v16, v17, v18, v19, v20, v21, v22, v23, v24, v25
+
+ cmp w3, w12
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23
+ st1 {v\i\().8h}, [x6], #16+.endr
+
+ b.ge 1b
+ cbz w9, 3f
+
+ movi v29.8h, #0
+ movi v30.8h, #0
+ movi v31.8h, #0
+2:
+ subs w9, w9, #8
+.rept 2
+ st1 {v28.8h,v29.8h,v30.8h,v31.8h}, [x6], #64+.endr
+ b.gt 2b
+
+3:
+ mov x6, x0
+ mov x7, sp
+ mov x8, #8*2
+ bl inv_txfm_add_vert_dct_8x32_neon
+
+ add sp, sp, #512
+ br x15
+endfunc
+
+function inv_txfm_add_dct_dct_32x8_neon, export=1
+ idct_dc 32, 8, 2
+
+ mov x15, x30
+ sub sp, sp, #512
+
+ mov x6, sp
+ mov x7, x2
+ mov x8, #8*2
+ bl inv_txfm_horz_dct_32x8_neon
+
+ mov x8, #2*32
+ mov w9, #0
+1:
+ add x6, x0, x9
+ add x7, sp, x9, lsl #1 // #(\i*2)
+
+.irp i, 16, 17, 18, 19, 20, 21, 22, 23
+ ld1 {v\i\().8h}, [x7], x8+.endr
+ add w9, w9, #8
+
+ bl inv_dct_8x8_neon
+
+ cmp w9, #32
+
+ load_add_store_8x8 x6, x7
+
+ b.lt 1b
+
+ add sp, sp, #512
+ br x15
+endfunc
+
+function inv_dct64_step1_neon
+ // in1/31/17/15 -> t32a/33/34a/35/60/61a/62/63a
+ // in7/25/23/ 9 -> t56a/57/58a/59/36/37a/38/39a
+ // in5/27/21/11 -> t40a/41/42a/43/52/53a/54/55a
+ // in3/29/19/13 -> t48a/49/50a/51/44/45a/46/47a
+
+ ld1 {v0.8h, v1.8h}, [x17], #32+
+ sqrdmulh v23.8h, v16.8h, v0.h[1] // t63a
+ sqrdmulh v16.8h, v16.8h, v0.h[0] // t32a
+ sqrdmulh v22.8h, v17.8h, v0.h[2] // t62a
+ sqrdmulh v17.8h, v17.8h, v0.h[3] // t33a
+ sqrdmulh v21.8h, v18.8h, v0.h[5] // t61a
+ sqrdmulh v18.8h, v18.8h, v0.h[4] // t34a
+ sqrdmulh v20.8h, v19.8h, v0.h[6] // t60a
+ sqrdmulh v19.8h, v19.8h, v0.h[7] // t35a
+
+ sqadd v24.8h, v16.8h, v17.8h // t32
+ sqsub v25.8h, v16.8h, v17.8h // t33
+ sqsub v26.8h, v19.8h, v18.8h // t34
+ sqadd v27.8h, v19.8h, v18.8h // t35
+ sqadd v28.8h, v20.8h, v21.8h // t60
+ sqsub v29.8h, v20.8h, v21.8h // t61
+ sqsub v30.8h, v23.8h, v22.8h // t62
+ sqadd v31.8h, v23.8h, v22.8h // t63
+
+ smull_smlal v2, v3, v29, v26, v1.h[0], v1.h[1], .8h // -> t34a
+ smull_smlsl v4, v5, v29, v26, v1.h[1], v1.h[0], .8h // -> t61a
+ neg v2.4s, v2.4s // t34a
+ neg v3.4s, v3.4s // t34a
+ smull_smlsl v6, v7, v30, v25, v1.h[1], v1.h[0], .8h // -> t33a
+ rshrn_sz v26, v2, v3, #12, .8h // t34a
+ smull_smlal v2, v3, v30, v25, v1.h[0], v1.h[1], .8h // -> t62a
+ rshrn_sz v29, v4, v5, #12, .8h // t61a
+ rshrn_sz v25, v6, v7, #12, .8h // t33a
+ rshrn_sz v30, v2, v3, #12, .8h // t62a
+
+ sqadd v16.8h, v24.8h, v27.8h // t32a
+ sqsub v19.8h, v24.8h, v27.8h // t35a
+ sqadd v17.8h, v25.8h, v26.8h // t33
+ sqsub v18.8h, v25.8h, v26.8h // t34
+ sqsub v20.8h, v31.8h, v28.8h // t60a
+ sqadd v23.8h, v31.8h, v28.8h // t63a
+ sqsub v21.8h, v30.8h, v29.8h // t61
+ sqadd v22.8h, v30.8h, v29.8h // t62
+
+ smull_smlal v2, v3, v21, v18, v1.h[2], v1.h[3], .8h // -> t61a
+ smull_smlsl v4, v5, v21, v18, v1.h[3], v1.h[2], .8h // -> t34a
+ smull_smlal v6, v7, v20, v19, v1.h[2], v1.h[3], .8h // -> t60
+ rshrn_sz v21, v2, v3, #12, .8h // t61a
+ rshrn_sz v18, v4, v5, #12, .8h // t34a
+ smull_smlsl v2, v3, v20, v19, v1.h[3], v1.h[2], .8h // -> t35
+ rshrn_sz v20, v6, v7, #12, .8h // t60
+ rshrn_sz v19, v2, v3, #12, .8h // t35
+
+ st1 {v16.8h, v17.8h, v18.8h, v19.8h}, [x6], #64+ st1 {v20.8h, v21.8h, v22.8h, v23.8h}, [x6], #64+
+ ret
+endfunc
+
+function inv_dct64_step2_neon
+ movrel x16, idct_coeffs
+ ld1 {v0.4h}, [x16]+1:
+ // t32a/33/34a/35/60/61a/62/63a
+ // t56a/57/58a/59/36/37a/38/39a
+ // t40a/41/42a/43/52/53a/54/55a
+ // t48a/49/50a/51/44/45a/46/47a
+ ldr q16, [x6, #2*8*0] // t32a
+ ldr q17, [x9, #2*8*8] // t39a
+ ldr q18, [x9, #2*8*0] // t63a
+ ldr q19, [x6, #2*8*8] // t56a
+ ldr q20, [x6, #2*8*16] // t40a
+ ldr q21, [x9, #2*8*24] // t47a
+ ldr q22, [x9, #2*8*16] // t55a
+ ldr q23, [x6, #2*8*24] // t48a
+
+ sqadd v24.8h, v16.8h, v17.8h // t32
+ sqsub v25.8h, v16.8h, v17.8h // t39
+ sqadd v26.8h, v18.8h, v19.8h // t63
+ sqsub v27.8h, v18.8h, v19.8h // t56
+ sqsub v28.8h, v21.8h, v20.8h // t40
+ sqadd v29.8h, v21.8h, v20.8h // t47
+ sqadd v30.8h, v23.8h, v22.8h // t48
+ sqsub v31.8h, v23.8h, v22.8h // t55
+
+ smull_smlal v2, v3, v27, v25, v0.h[3], v0.h[2], .8h // -> t56a
+ smull_smlsl v4, v5, v27, v25, v0.h[2], v0.h[3], .8h // -> t39a
+ smull_smlal v6, v7, v31, v28, v0.h[3], v0.h[2], .8h // -> t40a
+ rshrn_sz v25, v2, v3, #12, .8h // t56a
+ rshrn_sz v27, v4, v5, #12, .8h // t39a
+ neg v6.4s, v6.4s // t40a
+ neg v7.4s, v7.4s // t40a
+ smull_smlsl v2, v3, v31, v28, v0.h[2], v0.h[3], .8h // -> t55a
+ rshrn_sz v31, v6, v7, #12, .8h // t40a
+ rshrn_sz v28, v2, v3, #12, .8h // t55a
+
+ sqadd v16.8h, v24.8h, v29.8h // t32a
+ sqsub v19.8h, v24.8h, v29.8h // t47a
+ sqadd v17.8h, v27.8h, v31.8h // t39
+ sqsub v18.8h, v27.8h, v31.8h // t40
+ sqsub v20.8h, v26.8h, v30.8h // t48a
+ sqadd v23.8h, v26.8h, v30.8h // t63a
+ sqsub v21.8h, v25.8h, v28.8h // t55
+ sqadd v22.8h, v25.8h, v28.8h // t56
+
+ smull_smlsl v2, v3, v21, v18, v0.h[0], v0.h[0], .8h // -> t40a
+ smull_smlal v4, v5, v21, v18, v0.h[0], v0.h[0], .8h // -> t55a
+ smull_smlsl v6, v7, v20, v19, v0.h[0], v0.h[0], .8h // -> t47
+ rshrn_sz v18, v2, v3, #12, .8h // t40a
+ rshrn_sz v21, v4, v5, #12, .8h // t55a
+ smull_smlal v2, v3, v20, v19, v0.h[0], v0.h[0], .8h // -> t48
+ rshrn_sz v19, v6, v7, #12, .8h // t47
+ rshrn_sz v20, v2, v3, #12, .8h // t48
+
+ str q16, [x6, #2*8*0] // t32a
+ str q17, [x9, #2*8*0] // t39
+ str q18, [x6, #2*8*8] // t40a
+ str q19, [x9, #2*8*8] // t47
+ str q20, [x6, #2*8*16] // t48
+ str q21, [x9, #2*8*16] // t55a
+ str q22, [x6, #2*8*24] // t56
+ str q23, [x9, #2*8*24] // t63a
+
+ add x6, x6, #2*8
+ sub x9, x9, #2*8
+ cmp x6, x9
+ b.lt 1b
+ ret
+endfunc
+
+.macro load8 src, strd, zero, clear
+.irp i, v16.8h, v17.8h, v18.8h, v19.8h, v20.8h, v21.8h, v22.8h, v23.8h
+.if \clear
+ ld1 {\i}, [\src]+ st1 {\zero}, [\src], \strd+.else
+ ld1 {\i}, [\src], \strd+.endif
+.endr
+.endm
+
+.macro store16 dst
+.irp i, v16.8h, v17.8h, v18.8h, v19.8h, v20.8h, v21.8h, v22.8h, v23.8h, v24.8h, v25.8h, v26.8h, v27.8h, v28.8h, v29.8h, v30.8h, v31.8h
+ st1 {\i}, [\dst], #16+.endr
+.endm
+
+.macro clear_upper8
+.irp i, v24.8h, v25.8h, v26.8h, v27.8h, v28.8h, v29.8h, v30.8h, v31.8h
+ movi \i, #0
+.endr
+.endm
+
+.macro movi_if reg, val, cond
+.if \cond
+ movi \reg, \val
+.endif
+.endm
+
+.macro movdup_if reg, gpr, val, cond
+.if \cond
+ mov \gpr, \val
+ dup \reg, \gpr
+.endif
+.endm
+
+.macro st1_if regs, dst, cond
+.if \cond
+ st1 \regs, \dst
+.endif
+.endm
+
+.macro str_if reg, dst, cond
+.if \cond
+ str \reg, \dst
+.endif
+.endm
+
+.macro stroff_if reg, dst, dstoff, cond
+.if \cond
+ str \reg, \dst, \dstoff
+.endif
+.endm
+
+.macro scale_if cond, c, r0, r1, r2, r3, r4, r5, r6, r7
+.if \cond
+ scale_input .8h, \c, \r0, \r1, \r2, \r3, \r4, \r5, \r6, \r7
+.endif
+.endm
+
+.macro def_dct64_func suffix, clear=0, scale=0
+function inv_txfm_dct\suffix\()_8x64_neon
+ mov x14, x30
+ mov x6, sp
+ lsl x8, x8, #2
+
+ movdup_if v0.4h, w16, #2896*8, \scale
+ movi_if v7.8h, #0, \clear
+ load8 x7, x8, v7.8h, \clear
+ clear_upper8
+ sub x7, x7, x8, lsl #3
+ add x7, x7, x8, lsr #1
+ scale_if \scale, v0.h[0], v16, v17, v18, v19, v20, v21, v22, v23
+
+ bl inv_dct_8x16_neon
+
+ store16 x6
+
+ movdup_if v0.4h, w16, #2896*8, \scale
+ movi_if v7.8h, #0, \clear
+ load8 x7, x8, v7.8h, \clear
+ clear_upper8
+ sub x7, x7, x8, lsl #3
+ lsr x8, x8, #1
+ sub x7, x7, x8, lsr #1
+ scale_if \scale, v0.h[0], v16, v17, v18, v19, v20, v21, v22, v23
+
+ bl inv_dct32_odd_8x16_neon
+
+ add x10, x6, #16*15
+ sub x6, x6, #16*16
+
+ mov x9, #-16
+
+.macro store_addsub r0, r1, r2, r3
+ ld1 {v2.8h}, [x6], #16+ ld1 {v3.8h}, [x6], #16+ sqadd v6.8h, v2.8h, \r0
+ sqsub \r0, v2.8h, \r0
+ ld1 {v4.8h}, [x6], #16+ sqadd v7.8h, v3.8h, \r1
+ sqsub \r1, v3.8h, \r1
+ ld1 {v5.8h}, [x6], #16+ sqadd v2.8h, v4.8h, \r2
+ sub x6, x6, #16*4
+ sqsub \r2, v4.8h, \r2
+ st1 {v6.8h}, [x6], #16+ st1 {\r0}, [x10], x9+ sqadd v3.8h, v5.8h, \r3
+ sqsub \r3, v5.8h, \r3
+ st1 {v7.8h}, [x6], #16+ st1 {\r1}, [x10], x9+ st1 {v2.8h}, [x6], #16+ st1 {\r2}, [x10], x9+ st1 {v3.8h}, [x6], #16+ st1 {\r3}, [x10], x9+.endm
+ store_addsub v31.8h, v30.8h, v29.8h, v28.8h
+ store_addsub v27.8h, v26.8h, v25.8h, v24.8h
+ store_addsub v23.8h, v22.8h, v21.8h, v20.8h
+ store_addsub v19.8h, v18.8h, v17.8h, v16.8h
+.purgem store_addsub
+
+ add x6, x6, #2*8*16
+
+ movrel x17, idct64_coeffs
+ movdup_if v0.4h, w16, #2896*8, \scale
+ movi_if v7.8h, #0, \clear
+ add x9, x7, x8, lsl #4 // offset 16
+ add x10, x7, x8, lsl #3 // offset 8
+ sub x9, x9, x8 // offset 15
+ sub x11, x10, x8 // offset 7
+ ld1 {v16.8h}, [x7] // in1 (offset 0)+ ld1 {v17.8h}, [x9] // in31 (offset 15)+ ld1 {v18.8h}, [x10] // in17 (offset 8)+ ld1 {v19.8h}, [x11] // in15 (offset 7)+ st1_if {v7.8h}, [x7], \clear+ st1_if {v7.8h}, [x9], \clear+ st1_if {v7.8h}, [x10], \clear+ st1_if {v7.8h}, [x11], \clear+ scale_if \scale, v0.h[0], v16, v17, v18, v19
+ bl inv_dct64_step1_neon
+ movdup_if v0.4h, w16, #2896*8, \scale
+ movi_if v7.8h, #0, \clear
+ add x7, x7, x8, lsl #2 // offset 4
+ sub x9, x9, x8, lsl #2 // offset 11
+ sub x10, x7, x8 // offset 3
+ add x11, x9, x8 // offset 12
+ ld1 {v16.8h}, [x10] // in7 (offset 3)+ ld1 {v17.8h}, [x11] // in25 (offset 12)+ ld1 {v18.8h}, [x9] // in23 (offset 11)+ ld1 {v19.8h}, [x7] // in9 (offset 4)+ st1_if {v7.8h}, [x7], \clear+ st1_if {v7.8h}, [x9], \clear+ st1_if {v7.8h}, [x10], \clear+ st1_if {v7.8h}, [x11], \clear+ scale_if \scale, v0.h[0], v16, v17, v18, v19
+ bl inv_dct64_step1_neon
+ movdup_if v0.4h, w16, #2896*8, \scale
+ movi_if v7.8h, #0, \clear
+ sub x10, x10, x8, lsl #1 // offset 1
+ sub x9, x9, x8, lsl #1 // offset 9
+ add x7, x7, x8 // offset 5
+ add x11, x11, x8 // offset 13
+ ldr q16, [x10, x8] // in5 (offset 2)
+ ldr q17, [x11] // in27 (offset 13)
+ ldr q18, [x9, x8] // in21 (offset 10)
+ ldr q19, [x7] // in11 (offset 5)
+ stroff_if q7, [x10, x8], \clear
+ str_if q7, [x11], \clear
+ stroff_if q7, [x9, x8], \clear
+ str_if q7, [x7], \clear
+ scale_if \scale, v0.h[0], v16, v17, v18, v19
+ bl inv_dct64_step1_neon
+ movdup_if v0.4h, w16, #2896*8, \scale
+ movi_if v7.8h, #0, \clear
+ ldr q16, [x10] // in3 (offset 1)
+ ldr q17, [x11, x8] // in29 (offset 14)
+ ldr q18, [x9] // in19 (offset 9)
+ ldr q19, [x7, x8] // in13 (offset 6)
+ str_if q7, [x10], \clear
+ stroff_if q7, [x11, x8], \clear
+ str_if q7, [x9], \clear
+ stroff_if q7, [x7, x8], \clear
+ scale_if \scale, v0.h[0], v16, v17, v18, v19
+ bl inv_dct64_step1_neon
+
+ sub x6, x6, #2*8*32
+ add x9, x6, #2*8*7
+
+ bl inv_dct64_step2_neon
+
+ br x14
+endfunc
+.endm
+
+def_dct64_func
+def_dct64_func _clear, clear=1
+def_dct64_func _clear_scale, clear=1, scale=1
+
+
+function inv_txfm_horz_dct_64x8_neon
+ mov x14, x30
+
+ mov x7, sp
+ add x8, sp, #2*8*(64 - 4)
+ add x9, x6, #2*56
+ mov x10, #2*64
+ mov x11, #-2*8*4
+
+ dup v7.8h, w12
+1:
+ ld1 {v16.8h, v17.8h, v18.8h, v19.8h}, [x7], #64+ ld1 {v28.8h, v29.8h, v30.8h, v31.8h}, [x8], x11+ ld1 {v20.8h, v21.8h, v22.8h, v23.8h}, [x7], #64+ ld1 {v24.8h, v25.8h, v26.8h, v27.8h}, [x8], x11+ transpose_8x8h v16, v17, v18, v19, v20, v21, v22, v23, v4, v5
+ transpose_8x8h v31, v30, v29, v28, v27, v26, v25, v24, v4, v5
+
+.macro store_addsub src0, src1, src2, src3
+ sqsub v1.8h, \src0, \src1
+ sqadd v0.8h, \src0, \src1
+ sqsub v3.8h, \src2, \src3
+ srshl v1.8h, v1.8h, v7.8h
+ sqadd v2.8h, \src2, \src3
+ srshl v0.8h, v0.8h, v7.8h
+ srshl v3.8h, v3.8h, v7.8h
+ rev64 v1.8h, v1.8h
+ srshl v2.8h, v2.8h, v7.8h
+ rev64 v3.8h, v3.8h
+ ext v1.16b, v1.16b, v1.16b, #8
+ st1 {v0.8h}, [x6], x10+ ext v3.16b, v3.16b, v3.16b, #8
+ st1 {v1.8h}, [x9], x10+ st1 {v2.8h}, [x6], x10+ st1 {v3.8h}, [x9], x10+.endm
+ store_addsub v16.8h, v31.8h, v17.8h, v30.8h
+ store_addsub v18.8h, v29.8h, v19.8h, v28.8h
+ store_addsub v20.8h, v27.8h, v21.8h, v26.8h
+ store_addsub v22.8h, v25.8h, v23.8h, v24.8h
+.purgem store_addsub
+ sub x6, x6, x10, lsl #3
+ sub x9, x9, x10, lsl #3
+ add x6, x6, #16
+ sub x9, x9, #16
+
+ cmp x7, x8
+ b.lt 1b
+ br x14
+endfunc
+
+function inv_txfm_add_vert_dct_8x64_neon
+ mov x14, x30
+ lsl x8, x8, #1
+
+ mov x7, sp
+ add x8, sp, #2*8*(64 - 4)
+ add x9, x6, x1, lsl #6
+ sub x9, x9, x1
+ neg x10, x1
+ mov x11, #-2*8*4
+
+1:
+ ld1 {v16.8h, v17.8h, v18.8h, v19.8h}, [x7], #64+ ld1 {v28.8h, v29.8h, v30.8h, v31.8h}, [x8], x11+ ld1 {v20.8h, v21.8h, v22.8h, v23.8h}, [x7], #64+ ld1 {v24.8h, v25.8h, v26.8h, v27.8h}, [x8], x11+
+.macro add_dest_addsub src0, src1, src2, src3
+ ld1 {v0.8b}, [x6], x1+ ld1 {v1.8b}, [x9], x10+ sqadd v4.8h, \src0, \src1
+ ld1 {v2.8b}, [x6]+ sqsub v5.8h, \src0, \src1
+ ld1 {v3.8b}, [x9]+ sqadd v6.8h, \src2, \src3
+ sqsub v7.8h, \src2, \src3
+ sub x6, x6, x1
+ sub x9, x9, x10
+ srshr v4.8h, v4.8h, #4
+ srshr v5.8h, v5.8h, #4
+ srshr v6.8h, v6.8h, #4
+ uaddw v4.8h, v4.8h, v0.8b
+ srshr v7.8h, v7.8h, #4
+ uaddw v5.8h, v5.8h, v1.8b
+ uaddw v6.8h, v6.8h, v2.8b
+ sqxtun v0.8b, v4.8h
+ uaddw v7.8h, v7.8h, v3.8b
+ sqxtun v1.8b, v5.8h
+ st1 {v0.8b}, [x6], x1+ sqxtun v2.8b, v6.8h
+ st1 {v1.8b}, [x9], x10+ sqxtun v3.8b, v7.8h
+ st1 {v2.8b}, [x6], x1+ st1 {v3.8b}, [x9], x10+.endm
+ add_dest_addsub v16.8h, v31.8h, v17.8h, v30.8h
+ add_dest_addsub v18.8h, v29.8h, v19.8h, v28.8h
+ add_dest_addsub v20.8h, v27.8h, v21.8h, v26.8h
+ add_dest_addsub v22.8h, v25.8h, v23.8h, v24.8h
+.purgem add_dest_addsub
+ cmp x7, x8
+ b.lt 1b
+
+ br x14
+endfunc
+
+.macro sub_sp space
+#ifdef _WIN32
+.if \space > 4096
+ sub x16, sp, #4096
+ ldr xzr, [x16]
+ sub sp, x16, #(\space - 4096)
+.else
+ sub sp, sp, #\space
+.endif
+#else
+.if \space >= 4096
+ sub sp, sp, #(\space)/4096*4096
+.if (\space % 4096) != 0
+ sub sp, sp, #(\space)%4096
+.endif
+.else
+ sub sp, sp, #\space
+.endif
+#endif
+.endm
+
+function inv_txfm_add_dct_dct_64x64_neon, export=1
+ idct_dc 64, 64, 2
+
+ mov x15, x30
+
+ sub_sp 64*32*2+64*8*2
+ add x5, sp, #64*8*2
+
+ movrel x13, eob_32x32
+
+.irp i, 0, 8, 16, 24
+ add x6, x5, #(\i*64*2)
+.if \i > 0
+ mov w8, #(32 - \i)
+ cmp w3, w12
+ b.lt 1f
+.endif
+ add x7, x2, #(\i*2)
+ mov x8, #32*2
+ mov x12, #-2 // shift
+ bl inv_txfm_dct_clear_8x64_neon
+ add x6, x5, #(\i*64*2)
+ bl inv_txfm_horz_dct_64x8_neon
+.if \i < 24
+ ldrh w12, [x13], #2
+.endif
+.endr
+ b 3f
+
+1:
+ movi v4.8h, #0
+ movi v5.8h, #0
+ movi v6.8h, #0
+ movi v7.8h, #0
+2:
+ subs w8, w8, #2
+.rept 4
+ st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x6], #64+.endr
+ b.gt 2b
+
+3:
+.irp i, 0, 8, 16, 24, 32, 40, 48, 56
+ add x7, x5, #(\i*2)
+ mov x8, #64*2
+ bl inv_txfm_dct_8x64_neon
+ add x6, x0, #(\i)
+ bl inv_txfm_add_vert_dct_8x64_neon
+.endr
+
+ add sp, x5, #64*32*2
+ br x15
+endfunc
+
+function inv_txfm_add_dct_dct_64x32_neon, export=1
+ idct_dc 64, 32, 1
+
+ mov x15, x30
+
+ sub_sp 64*32*2+64*8*2
+ add x5, sp, #64*8*2
+
+ movrel x13, eob_32x32
+
+.irp i, 0, 8, 16, 24
+ add x6, x5, #(\i*64*2)
+.if \i > 0
+ mov w8, #(32 - \i)
+ cmp w3, w12
+ b.lt 1f
+.endif
+ add x7, x2, #(\i*2)
+ mov x8, #32*2
+ mov x12, #-1 // shift
+ bl inv_txfm_dct_clear_scale_8x64_neon
+ add x6, x5, #(\i*64*2)
+ bl inv_txfm_horz_dct_64x8_neon
+.if \i < 24
+ ldrh w12, [x13], #2
+.endif
+.endr
+ b 3f
+
+1:
+ movi v4.8h, #0
+ movi v5.8h, #0
+ movi v6.8h, #0
+ movi v7.8h, #0
+2:
+ subs w8, w8, #2
+.rept 4
+ st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x6], #64+.endr
+ b.gt 2b
+
+3:
+.irp i, 0, 8, 16, 24, 32, 40, 48, 56
+ add x6, x0, #(\i)
+ add x7, x5, #(\i*2)
+ mov x8, #64*2
+ bl inv_txfm_add_vert_dct_8x32_neon
+.endr
+
+ add sp, x5, #64*32*2
+ br x15
+endfunc
+
+function inv_txfm_add_dct_dct_32x64_neon, export=1
+ idct_dc 32, 64, 1
+
+ mov x15, x30
+
+ sub_sp 32*32*2+64*8*2
+ add x5, sp, #64*8*2
+
+ movrel x13, eob_32x32
+ ldrh w12, [x13], #2
+
+.irp i, 0, 8, 16, 24
+ add x6, x5, #(\i*32*2)
+.if \i > 0
+ mov w8, #(32 - \i)
+ cmp w3, w12
+ b.lt 1f
+ ldrh w12, [x13], #2
+.endif
+ add x7, x2, #(\i*2)
+ mov x8, #32*2
+ bl inv_txfm_horz_scale_dct_32x8_neon
+.endr
+ b 3f
+
+1:
+ movi v4.8h, #0
+ movi v5.8h, #0
+ movi v6.8h, #0
+ movi v7.8h, #0
+2:
+ subs w8, w8, #4
+.rept 4
+ st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x6], #64+.endr
+ b.gt 2b
+
+3:
+.irp i, 0, 8, 16, 24
+ add x7, x5, #(\i*2)
+ mov x8, #32*2
+ bl inv_txfm_dct_8x64_neon
+ add x6, x0, #(\i)
+ bl inv_txfm_add_vert_dct_8x64_neon
+.endr
+
+ add sp, x5, #32*32*2
+ br x15
+endfunc
+
+function inv_txfm_add_dct_dct_64x16_neon, export=1
+ idct_dc 64, 16, 2
+
+ mov x15, x30
+
+ sub_sp 64*16*2+64*8*2
+ add x4, sp, #64*8*2
+
+ movrel x13, eob_16x32
+
+.irp i, 0, 8
+ add x6, x4, #(\i*64*2)
+.if \i > 0
+ mov w8, #(16 - \i)
+ cmp w3, w12
+ b.lt 1f
+ ldrh w12, [x13], #2
+.endif
+ add x7, x2, #(\i*2)
+ mov x8, #16*2
+ mov x12, #-2 // shift
+ bl inv_txfm_dct_clear_8x64_neon
+ add x6, x4, #(\i*64*2)
+ bl inv_txfm_horz_dct_64x8_neon
+.endr
+ b 3f
+
+1:
+ movi v4.8h, #0
+ movi v5.8h, #0
+ movi v6.8h, #0
+ movi v7.8h, #0
+2:
+ subs w8, w8, #2
+.rept 4
+ st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x6], #64+.endr
+ b.gt 2b
+
+3:
+ adr x5, inv_dct_8x16_neon
+.irp i, 0, 8, 16, 24, 32, 40, 48, 56
+ add x6, x0, #(\i)
+ add x7, x4, #(\i*2)
+ mov x8, #64*2
+ bl inv_txfm_add_vert_8x16_neon
+.endr
+
+ add sp, x4, #64*16*2
+ br x15
+endfunc
+
+function inv_txfm_add_dct_dct_16x64_neon, export=1
+ idct_dc 16, 64, 2
+
+ mov x15, x30
+
+ sub_sp 16*32*2+64*8*2
+ add x5, sp, #64*8*2
+
+ movrel x13, eob_16x32
+ ldrh w12, [x13], #2
+
+ adr x4, inv_dct_8x16_neon
+.irp i, 0, 8, 16, 24
+ add x6, x5, #(\i*16*2)
+.if \i > 0
+ mov w8, #(32 - \i)
+ cmp w3, w12
+ b.lt 1f
+ ldrh w12, [x13], #2
+.endif
+ add x7, x2, #(\i*2)
+ mov x8, #32*2
+ bl inv_txfm_horz_16x8_neon
+.endr
+ b 3f
+
+1:
+ movi v4.8h, #0
+ movi v5.8h, #0
+ movi v6.8h, #0
+ movi v7.8h, #0
+2:
+ subs w8, w8, #8
+.rept 4
+ st1 {v4.8h, v5.8h, v6.8h, v7.8h}, [x6], #64+.endr
+ b.gt 2b
+
+3:
+.irp i, 0, 8
+ add x7, x5, #(\i*2)
+ mov x8, #16*2
+ bl inv_txfm_dct_8x64_neon
+ add x6, x0, #(\i)
+ bl inv_txfm_add_vert_dct_8x64_neon
+.endr
+
+ add sp, x5, #16*32*2
+ br x15
+endfunc
--- a/src/arm/64/util.S
+++ b/src/arm/64/util.S
@@ -88,6 +88,35 @@
trn2 \r7\().2s, \t9\().2s, \r7\().2s
.endm
+.macro transpose_8x8h r0, r1, r2, r3, r4, r5, r6, r7, t8, t9
+ trn1 \t8\().8h, \r0\().8h, \r1\().8h
+ trn2 \t9\().8h, \r0\().8h, \r1\().8h
+ trn1 \r1\().8h, \r2\().8h, \r3\().8h
+ trn2 \r3\().8h, \r2\().8h, \r3\().8h
+ trn1 \r0\().8h, \r4\().8h, \r5\().8h
+ trn2 \r5\().8h, \r4\().8h, \r5\().8h
+ trn1 \r2\().8h, \r6\().8h, \r7\().8h
+ trn2 \r7\().8h, \r6\().8h, \r7\().8h
+
+ trn1 \r4\().4s, \r0\().4s, \r2\().4s
+ trn2 \r2\().4s, \r0\().4s, \r2\().4s
+ trn1 \r6\().4s, \r5\().4s, \r7\().4s
+ trn2 \r7\().4s, \r5\().4s, \r7\().4s
+ trn1 \r5\().4s, \t9\().4s, \r3\().4s
+ trn2 \t9\().4s, \t9\().4s, \r3\().4s
+ trn1 \r3\().4s, \t8\().4s, \r1\().4s
+ trn2 \t8\().4s, \t8\().4s, \r1\().4s
+
+ trn1 \r0\().2d, \r3\().2d, \r4\().2d
+ trn2 \r4\().2d, \r3\().2d, \r4\().2d
+ trn1 \r1\().2d, \r5\().2d, \r6\().2d
+ trn2 \r5\().2d, \r5\().2d, \r6\().2d
+ trn2 \r6\().2d, \t8\().2d, \r2\().2d
+ trn1 \r2\().2d, \t8\().2d, \r2\().2d
+ trn1 \r3\().2d, \t9\().2d, \r7\().2d
+ trn2 \r7\().2d, \t9\().2d, \r7\().2d
+.endm
+
.macro transpose_8x16b r0, r1, r2, r3, r4, r5, r6, r7, t8, t9
trn1 \t8\().16b, \r0\().16b, \r1\().16b
trn2 \t9\().16b, \r0\().16b, \r1\().16b
@@ -127,6 +156,30 @@
trn2 \r2\().8h, \t4\().8h, \t6\().8h
trn1 \r1\().8h, \t5\().8h, \t7\().8h
trn2 \r3\().8h, \t5\().8h, \t7\().8h
+.endm
+
+.macro transpose_4x4h r0, r1, r2, r3, t4, t5, t6, t7
+ trn1 \t4\().4h, \r0\().4h, \r1\().4h
+ trn2 \t5\().4h, \r0\().4h, \r1\().4h
+ trn1 \t6\().4h, \r2\().4h, \r3\().4h
+ trn2 \t7\().4h, \r2\().4h, \r3\().4h
+
+ trn1 \r0\().2s, \t4\().2s, \t6\().2s
+ trn2 \r2\().2s, \t4\().2s, \t6\().2s
+ trn1 \r1\().2s, \t5\().2s, \t7\().2s
+ trn2 \r3\().2s, \t5\().2s, \t7\().2s
+.endm
+
+.macro transpose_4x8h r0, r1, r2, r3, t4, t5, t6, t7
+ trn1 \t4\().8h, \r0\().8h, \r1\().8h
+ trn2 \t5\().8h, \r0\().8h, \r1\().8h
+ trn1 \t6\().8h, \r2\().8h, \r3\().8h
+ trn2 \t7\().8h, \r2\().8h, \r3\().8h
+
+ trn1 \r0\().4s, \t4\().4s, \t6\().4s
+ trn2 \r2\().4s, \t4\().4s, \t6\().4s
+ trn1 \r1\().4s, \t5\().4s, \t7\().4s
+ trn2 \r3\().4s, \t5\().4s, \t7\().4s
.endm
#endif /* DAV1D_SRC_ARM_64_UTIL_S */
--- /dev/null
+++ b/src/arm/itx_init_tmpl.c
@@ -1,0 +1,141 @@
+/*
+ * Copyright © 2018, VideoLAN and dav1d authors
+ * Copyright © 2019, Martin Storsjo
+ * 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.
+ *
+ * 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 COPYRIGHT OWNER 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 "src/cpu.h"
+#include "src/itx.h"
+
+#define decl_itx2_fns(w, h, opt) \
+decl_itx_fn(dav1d_inv_txfm_add_dct_dct_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_identity_identity_##w##x##h##_##opt)
+
+#define decl_itx12_fns(w, h, opt) \
+decl_itx2_fns(w, h, opt); \
+decl_itx_fn(dav1d_inv_txfm_add_dct_adst_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_dct_flipadst_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_dct_identity_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_adst_dct_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_adst_adst_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_adst_flipadst_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_flipadst_dct_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_flipadst_adst_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_flipadst_flipadst_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_identity_dct_##w##x##h##_##opt)
+
+#define decl_itx16_fns(w, h, opt) \
+decl_itx12_fns(w, h, opt); \
+decl_itx_fn(dav1d_inv_txfm_add_adst_identity_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_flipadst_identity_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_identity_adst_##w##x##h##_##opt); \
+decl_itx_fn(dav1d_inv_txfm_add_identity_flipadst_##w##x##h##_##opt)
+
+#define decl_itx17_fns(w, h, opt) \
+decl_itx16_fns(w, h, opt); \
+decl_itx_fn(dav1d_inv_txfm_add_wht_wht_##w##x##h##_##opt)
+
+decl_itx17_fns( 4, 4, neon);
+decl_itx16_fns( 4, 8, neon);
+decl_itx16_fns( 4, 16, neon);
+decl_itx16_fns( 8, 4, neon);
+decl_itx16_fns( 8, 8, neon);
+decl_itx16_fns( 8, 16, neon);
+decl_itx2_fns ( 8, 32, neon);
+decl_itx16_fns(16, 4, neon);
+decl_itx16_fns(16, 8, neon);
+decl_itx12_fns(16, 16, neon);
+decl_itx2_fns (16, 32, neon);
+decl_itx2_fns (32, 8, neon);
+decl_itx2_fns (32, 16, neon);
+decl_itx2_fns (32, 32, neon);
+
+decl_itx_fn(dav1d_inv_txfm_add_dct_dct_16x64_neon);
+decl_itx_fn(dav1d_inv_txfm_add_dct_dct_32x64_neon);
+decl_itx_fn(dav1d_inv_txfm_add_dct_dct_64x16_neon);
+decl_itx_fn(dav1d_inv_txfm_add_dct_dct_64x32_neon);
+decl_itx_fn(dav1d_inv_txfm_add_dct_dct_64x64_neon);
+
+COLD void bitfn(dav1d_itx_dsp_init_arm)(Dav1dInvTxfmDSPContext *const c) {+#define assign_itx_fn(pfx, w, h, type, type_enum, ext) \
+ c->itxfm_add[pfx##TX_##w##X##h][type_enum] = \
+ dav1d_inv_txfm_add_##type##_##w##x##h##_##ext
+
+#define assign_itx1_fn(pfx, w, h, ext) \
+ assign_itx_fn(pfx, w, h, dct_dct, DCT_DCT, ext)
+
+#define assign_itx2_fn(pfx, w, h, ext) \
+ assign_itx1_fn(pfx, w, h, ext); \
+ assign_itx_fn(pfx, w, h, identity_identity, IDTX, ext)
+
+#define assign_itx12_fn(pfx, w, h, ext) \
+ assign_itx2_fn(pfx, w, h, ext); \
+ assign_itx_fn(pfx, w, h, dct_adst, ADST_DCT, ext); \
+ assign_itx_fn(pfx, w, h, dct_flipadst, FLIPADST_DCT, ext); \
+ assign_itx_fn(pfx, w, h, dct_identity, H_DCT, ext); \
+ assign_itx_fn(pfx, w, h, adst_dct, DCT_ADST, ext); \
+ assign_itx_fn(pfx, w, h, adst_adst, ADST_ADST, ext); \
+ assign_itx_fn(pfx, w, h, adst_flipadst, FLIPADST_ADST, ext); \
+ assign_itx_fn(pfx, w, h, flipadst_dct, DCT_FLIPADST, ext); \
+ assign_itx_fn(pfx, w, h, flipadst_adst, ADST_FLIPADST, ext); \
+ assign_itx_fn(pfx, w, h, flipadst_flipadst, FLIPADST_FLIPADST, ext); \
+ assign_itx_fn(pfx, w, h, identity_dct, V_DCT, ext)
+
+#define assign_itx16_fn(pfx, w, h, ext) \
+ assign_itx12_fn(pfx, w, h, ext); \
+ assign_itx_fn(pfx, w, h, adst_identity, H_ADST, ext); \
+ assign_itx_fn(pfx, w, h, flipadst_identity, H_FLIPADST, ext); \
+ assign_itx_fn(pfx, w, h, identity_adst, V_ADST, ext); \
+ assign_itx_fn(pfx, w, h, identity_flipadst, V_FLIPADST, ext)
+
+#define assign_itx17_fn(pfx, w, h, ext) \
+ assign_itx16_fn(pfx, w, h, ext); \
+ assign_itx_fn(pfx, w, h, wht_wht, WHT_WHT, ext)
+
+ const unsigned flags = dav1d_get_cpu_flags();
+
+ if (!(flags & DAV1D_ARM_CPU_FLAG_NEON)) return;
+
+#if BITDEPTH == 8 && ARCH_AARCH64
+ assign_itx17_fn( , 4, 4, neon);
+ assign_itx16_fn(R, 4, 8, neon);
+ assign_itx16_fn(R, 4, 16, neon);
+ assign_itx16_fn(R, 8, 4, neon);
+ assign_itx16_fn( , 8, 8, neon);
+ assign_itx16_fn(R, 8, 16, neon);
+ assign_itx2_fn (R, 8, 32, neon);
+ assign_itx16_fn(R, 16, 4, neon);
+ assign_itx16_fn(R, 16, 8, neon);
+ assign_itx12_fn( , 16, 16, neon);
+ assign_itx2_fn (R, 16, 32, neon);
+ assign_itx1_fn (R, 16, 64, neon);
+ assign_itx2_fn (R, 32, 8, neon);
+ assign_itx2_fn (R, 32, 16, neon);
+ assign_itx2_fn ( , 32, 32, neon);
+ assign_itx1_fn (R, 32, 64, neon);
+ assign_itx1_fn (R, 64, 16, neon);
+ assign_itx1_fn (R, 64, 32, neon);
+ assign_itx1_fn ( , 64, 64, neon);
+#endif
+}
--- a/src/itx.h
+++ b/src/itx.h
@@ -44,6 +44,7 @@
} Dav1dInvTxfmDSPContext;
bitfn_decls(void dav1d_itx_dsp_init, Dav1dInvTxfmDSPContext *c);
+bitfn_decls(void dav1d_itx_dsp_init_arm, Dav1dInvTxfmDSPContext *c);
bitfn_decls(void dav1d_itx_dsp_init_x86, Dav1dInvTxfmDSPContext *c);
#endif /* DAV1D_SRC_ITX_H */
--- a/src/itx_tmpl.c
+++ b/src/itx_tmpl.c
@@ -260,7 +260,12 @@
assign_itx_all_fn64(64, 32, R);
assign_itx_all_fn64(64, 64, );
-#if HAVE_ASM && ARCH_X86
+#if HAVE_ASM
+#if ARCH_AARCH64 || ARCH_ARM
+ bitfn(dav1d_itx_dsp_init_arm)(c);
+#endif
+#if ARCH_X86
bitfn(dav1d_itx_dsp_init_x86)(c);
+#endif
#endif
}
--- a/src/meson.build
+++ b/src/meson.build
@@ -86,6 +86,7 @@
)
libdav1d_tmpl_sources += files(
'arm/cdef_init_tmpl.c',
+ 'arm/itx_init_tmpl.c',
'arm/loopfilter_init_tmpl.c',
'arm/looprestoration_init_tmpl.c',
'arm/mc_init_tmpl.c',
@@ -93,6 +94,7 @@
if host_machine.cpu_family() == 'aarch64'
libdav1d_sources += files(
'arm/64/cdef.S',
+ 'arm/64/itx.S',
'arm/64/loopfilter.S',
'arm/64/looprestoration.S',
'arm/64/mc.S',