xref: /aosp_15_r20/external/XNNPACK/src/x32-transposec/gen/4x4-reuse-switch-zip-neon.c (revision 4bdc94577ba0e567308109d787f7fec7b531ce36)
1 // Auto-generated file. Do not edit!
2 //   Template: src/x32-transposec/neon-zip.c.in
3 //   Generator: tools/xngen
4 //
5 // Copyright 2021 Google LLC
6 //
7 // This source code is licensed under the BSD-style license found in the
8 // LICENSE file in the root directory of this source tree.
9 
10 #include <arm_neon.h>
11 
12 #include <assert.h>
13 
14 #include <xnnpack/common.h>
15 #include <xnnpack/math.h>
16 #include <xnnpack/transpose.h>
17 
xnn_x32_transposec_ukernel__4x4_reuse_switch_zip_neon(const uint32_t * input,uint32_t * output,size_t input_stride,size_t output_stride,size_t block_width,size_t block_height)18 void xnn_x32_transposec_ukernel__4x4_reuse_switch_zip_neon(
19     const uint32_t* input,
20     uint32_t* output,
21     size_t input_stride,
22     size_t output_stride,
23     size_t block_width,
24     size_t block_height) XNN_OOB_READS
25 {
26   assert(output_stride >= block_height * sizeof(uint32_t));
27   assert(input_stride >= block_width * sizeof(uint32_t));
28 
29   const size_t tile_height = 4;
30   const size_t tile_width = 4;
31   const size_t tile_hbytes = tile_height * sizeof(uint32_t);
32   const size_t tile_wbytes = tile_width * sizeof(uint32_t);
33   const size_t input_reset = tile_wbytes - round_down_po2(block_height, tile_height) * input_stride;
34   const size_t output_reset = tile_width * output_stride - round_down_po2(block_height, 2) * sizeof(uint32_t);
35 
36   const uint32_t* i0 = input;
37   uint32_t* o = (uint32_t*) output;
38   const size_t minus_output_stride = -output_stride;
39 
40   do {
41     const size_t rem = min(block_width - 1, 3);
42     const size_t oN_stride = rem * output_stride;
43     size_t bh = block_height;
44     for (; bh >= 4; bh -= 4) {
45       const uint32x4_t v2_0 = vld1q_u32(i0); i0 = (uint32_t*) ((uintptr_t) i0 + input_stride);
46       const uint32x4_t v2_1 = vld1q_u32(i0); i0 = (uint32_t*) ((uintptr_t) i0 + input_stride);
47       const uint32x4_t v2_2 = vld1q_u32(i0); i0 = (uint32_t*) ((uintptr_t) i0 + input_stride);
48       const uint32x4_t v2_3 = vld1q_u32(i0); i0 = (uint32_t*) ((uintptr_t) i0 + input_stride);
49 
50       const uint32x4x2_t v1_0 = vzipq_u32(v2_0, v2_2);
51       const uint32x4x2_t v1_1 = vzipq_u32(v2_1, v2_3);
52 
53       const uint32x4x2_t v0_0 = vzipq_u32(v1_0.val[0], v1_1.val[0]);
54       const uint32x4x2_t v0_1 = vzipq_u32(v1_0.val[1], v1_1.val[1]);
55 
56       uint32_t *oN = (uint32_t*) ((uintptr_t) o + oN_stride);
57       switch (rem) {
58         case 3:
59           vst1q_u32(oN, v0_1.val[1]); oN = (uint32_t*) ((uintptr_t) oN + minus_output_stride);
60         case 2:
61           vst1q_u32(oN, v0_1.val[0]); oN = (uint32_t*) ((uintptr_t) oN + minus_output_stride);
62         case 1:
63           vst1q_u32(oN, v0_0.val[1]);
64         case 0:
65           vst1q_u32(o, v0_0.val[0]); o = (uint32_t*) ((uintptr_t) o + tile_hbytes);
66           break;
67         default:
68           XNN_UNREACHABLE;
69       }
70     }
71 
72     if (bh != 0) {
73       const uint32x4_t v2_0 = vld1q_u32(i0);
74       const uint32_t *i1 = (const uint32_t*) ((uintptr_t) i0 + input_stride);
75       if XNN_UNPREDICTABLE(bh < 2) {
76         i1 = i0;
77       }
78       const uint32x4_t v2_1 = vld1q_u32(i1);
79       const uint32_t *i2 = (const uint32_t*) ((uintptr_t) i1 + input_stride);
80       if XNN_UNPREDICTABLE(bh <= 2) {
81         i2 = i1;
82       }
83       const uint32x4_t v2_2 = vld1q_u32(i2);
84       const uint32x4_t v2_3 = vmovq_n_u32(0);
85 
86       const uint32x4x2_t v1_0 = vzipq_u32(v2_0, v2_2);
87       const uint32x4x2_t v1_1 = vzipq_u32(v2_1, v2_3);
88 
89       const uint32x4x2_t v0_0 = vzipq_u32(v1_0.val[0], v1_1.val[0]);
90       const uint32x4x2_t v0_1 = vzipq_u32(v1_0.val[1], v1_1.val[1]);
91 
92       uint32x2_t v0_low = vget_low_u32(v0_0.val[0]);
93       uint32x2_t v1_low = vget_low_u32(v0_0.val[1]);
94       uint32x2_t v2_low = vget_low_u32(v0_1.val[0]);
95       uint32x2_t v3_low = vget_low_u32(v0_1.val[1]);
96 
97       if (bh & 2) {
98         uint32_t* oN = (uint32_t*) ((uintptr_t) o + oN_stride);
99         switch (rem) {
100           case 3:
101             vst1_u32(oN, v3_low); oN = (uint32_t*) ((uintptr_t) oN + minus_output_stride);
102           case 2:
103             vst1_u32(oN, v2_low); oN = (uint32_t*) ((uintptr_t) oN + minus_output_stride);
104           case 1:
105             vst1_u32(oN, v1_low);
106           case 0:
107             vst1_u32(o, v0_low); o += 2;
108             break;
109           default:
110             XNN_UNREACHABLE;
111         }
112         v0_low = vget_high_u32(v0_0.val[0]);
113         v1_low = vget_high_u32(v0_0.val[1]);
114         v2_low = vget_high_u32(v0_1.val[0]);
115         v3_low = vget_high_u32(v0_1.val[1]);
116       }
117 
118       if (bh & 1) {
119         uint32_t* oN = (uint32_t*) ((uintptr_t) o + oN_stride);
120         switch (rem) {
121           case 3:
122             vst1_lane_u32(oN, v3_low, 0); oN = (uint32_t*) ((uintptr_t) oN + minus_output_stride);
123           case 2:
124             vst1_lane_u32(oN, v2_low, 0); oN = (uint32_t*) ((uintptr_t) oN + minus_output_stride);
125           case 1:
126             vst1_lane_u32(oN, v1_low, 0);
127           case 0:
128             vst1_lane_u32(o, v0_low, 0);
129             break;
130           default:
131             XNN_UNREACHABLE;
132         }
133       }
134     }
135 
136     i0 = (const uint32_t*) ((uintptr_t) i0 + input_reset);
137     o = (uint32_t*) ((uintptr_t) o + output_reset);
138     block_width = doz(block_width, tile_width);
139   } while (block_width != 0);
140 }
141