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Diffstat (limited to 'src/core/NEON/kernels/arm_gemm/transforms/a64_transpose_interleave_4_1x16.hpp')
-rw-r--r--src/core/NEON/kernels/arm_gemm/transforms/a64_transpose_interleave_4_1x16.hpp372
1 files changed, 188 insertions, 184 deletions
diff --git a/src/core/NEON/kernels/arm_gemm/transforms/a64_transpose_interleave_4_1x16.hpp b/src/core/NEON/kernels/arm_gemm/transforms/a64_transpose_interleave_4_1x16.hpp
index 6ef02ac044..ed12f5dfa9 100644
--- a/src/core/NEON/kernels/arm_gemm/transforms/a64_transpose_interleave_4_1x16.hpp
+++ b/src/core/NEON/kernels/arm_gemm/transforms/a64_transpose_interleave_4_1x16.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2021, 2023 Arm Limited.
+ * Copyright (c) 2021, 2023-2024 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
@@ -41,9 +41,10 @@ void a64_transpose_interleave_4_1x16(uint8_t *out, const uint8_t *in, size_t wid
__asm__ __volatile__(
"1:" // Main row loop: Head
"mov x17, %x[in]\n"
- "add x16, x17, %x[in_stride]\n"
- "add x15, x16, %x[in_stride]\n"
- "add x14, x15, %x[in_stride]\n"
+ "cmp %x[height], #0xf\n"
+ "mov x16, %x[width]\n"
+ "mov x15, %x[out]\n"
+ "add x14, x17, %x[in_stride]\n"
"add x13, x14, %x[in_stride]\n"
"add x12, x13, %x[in_stride]\n"
"add x11, x12, %x[in_stride]\n"
@@ -56,228 +57,231 @@ void a64_transpose_interleave_4_1x16(uint8_t *out, const uint8_t *in, size_t wid
"add x24, x25, %x[in_stride]\n"
"add x23, x24, %x[in_stride]\n"
"add x22, x23, %x[in_stride]\n"
- "cmp %x[height], #0xf\n"
- "add %x[in], x22, %x[in_stride]\n"
+ "add x21, x22, %x[in_stride]\n"
+ "add x20, x21, %x[in_stride]\n"
+ "csel x21, x21, %x[pad_row], GE\n"
+ "add %x[in], x20, %x[in_stride]\n"
+ "csel x20, x20, %x[pad_row], GT\n"
+ "cmp %x[height], #0xd\n"
"csel x22, x22, %x[pad_row], GT\n"
"csel x23, x23, %x[pad_row], GE\n"
- "cmp %x[height], #0xd\n"
+ "cmp %x[height], #0xb\n"
"csel x24, x24, %x[pad_row], GT\n"
"csel x25, x25, %x[pad_row], GE\n"
- "cmp %x[height], #0xb\n"
+ "cmp %x[height], #0x9\n"
"csel x26, x26, %x[pad_row], GT\n"
"csel x27, x27, %x[pad_row], GE\n"
- "cmp %x[height], #0x9\n"
+ "cmp %x[height], #0x7\n"
"csel x28, x28, %x[pad_row], GT\n"
"csel x9, x9, %x[pad_row], GE\n"
- "cmp %x[height], #0x7\n"
+ "cmp %x[height], #0x5\n"
"csel x10, x10, %x[pad_row], GT\n"
"csel x11, x11, %x[pad_row], GE\n"
- "cmp %x[height], #0x5\n"
- "mov x21, %x[width]\n"
+ "cmp %x[height], #0x3\n"
"csel x12, x12, %x[pad_row], GT\n"
"csel x13, x13, %x[pad_row], GE\n"
- "cmp %x[height], #0x3\n"
- "csel x14, x14, %x[pad_row], GT\n"
- "csel x15, x15, %x[pad_row], GE\n"
"cmp %x[height], #0x1\n"
- "csel x16, x16, %x[pad_row], GT\n"
- "cmp x21, #0x10\n"
- "mov x20, %x[out]\n"
"sub %x[height], %x[height], #0x10\n"
+ "csel x14, x14, %x[pad_row], GT\n"
+ "cmp x16, #0x10\n"
"blt 3f\n"
"2:" // Main row loop: Unroll column loop
"ldr q3, [x17], #0x10\n"
- "ldr q9, [x16], #0x10\n"
- "sub x21, x21, #0x10\n"
- "cmp x21, #0x10\n"
- "ldr q2, [x15], #0x10\n"
- "ldr q8, [x14], #0x10\n"
- "ldr q0, [x13], #0x10\n"
- "ldr q31, [x12], #0x10\n"
- "ldr q30, [x11], #0x10\n"
+ "ldr q9, [x14], #0x10\n"
+ "sub x16, x16, #0x10\n"
+ "ldr q2, [x13], #0x10\n"
+ "ldr q8, [x12], #0x10\n"
+ "cmp x16, #0x10\n"
+ "ldr q1, [x11], #0x10\n"
"ldr q7, [x10], #0x10\n"
- "ldr q29, [x9], #0x10\n"
- "ldr q28, [x28], #0x10\n"
- "zip1 v27.16b, v3.16b, v29.16b\n"
- "zip1 v6.16b, v9.16b, v28.16b\n"
- "ldr q25, [x27], #0x10\n"
- "ldr q24, [x26], #0x10\n"
- "zip1 v26.16b, v2.16b, v25.16b\n"
- "zip1 v1.16b, v8.16b, v24.16b\n"
- "ldr q23, [x25], #0x10\n"
- "ldr q22, [x24], #0x10\n"
- "zip1 v21.16b, v0.16b, v23.16b\n"
- "zip1 v20.16b, v31.16b, v22.16b\n"
- "ldr q19, [x23], #0x10\n"
- "ldr q18, [x22], #0x10\n"
- "zip1 v17.16b, v30.16b, v19.16b\n"
- "zip1 v16.16b, v7.16b, v18.16b\n"
- "zip2 v5.16b, v3.16b, v29.16b\n"
- "zip2 v0.16b, v0.16b, v23.16b\n"
- "zip2 v4.16b, v2.16b, v25.16b\n"
- "zip2 v3.16b, v30.16b, v19.16b\n"
- "zip2 v2.16b, v9.16b, v28.16b\n"
- "zip2 v31.16b, v31.16b, v22.16b\n"
- "zip2 v30.16b, v8.16b, v24.16b\n"
- "zip2 v29.16b, v7.16b, v18.16b\n"
- "zip1 v25.16b, v27.16b, v21.16b\n"
- "zip1 v24.16b, v26.16b, v17.16b\n"
- "zip1 v23.16b, v6.16b, v20.16b\n"
- "zip1 v22.16b, v1.16b, v16.16b\n"
- "zip2 v28.16b, v27.16b, v21.16b\n"
- "zip2 v27.16b, v26.16b, v17.16b\n"
- "zip2 v26.16b, v6.16b, v20.16b\n"
- "zip2 v21.16b, v1.16b, v16.16b\n"
- "zip1 v1.16b, v5.16b, v0.16b\n"
- "zip1 v20.16b, v4.16b, v3.16b\n"
- "zip1 v19.16b, v2.16b, v31.16b\n"
- "zip1 v16.16b, v30.16b, v29.16b\n"
- "zip1 v18.16b, v25.16b, v24.16b\n"
- "zip1 v17.16b, v23.16b, v22.16b\n"
- "zip2 v25.16b, v25.16b, v24.16b\n"
- "zip2 v24.16b, v23.16b, v22.16b\n"
- "zip2 v0.16b, v5.16b, v0.16b\n"
- "zip2 v23.16b, v4.16b, v3.16b\n"
- "zip2 v31.16b, v2.16b, v31.16b\n"
- "zip2 v22.16b, v30.16b, v29.16b\n"
- "zip1 v30.16b, v28.16b, v27.16b\n"
- "zip1 v29.16b, v26.16b, v21.16b\n"
+ "ldr q0, [x9], #0x10\n"
+ "ldr q6, [x28], #0x10\n"
+ "ldr q31, [x27], #0x10\n"
+ "ldr q30, [x26], #0x10\n"
+ "ldr q29, [x25], #0x10\n"
+ "ldr q28, [x24], #0x10\n"
+ "ldr q26, [x23], #0x10\n"
+ "ldr q25, [x22], #0x10\n"
+ "ldr q24, [x21], #0x10\n"
+ "ldr q16, [x20], #0x10\n"
+ "zip1 v23.16b, v3.16b, v31.16b\n"
+ "zip1 v27.16b, v9.16b, v30.16b\n"
+ "zip1 v22.16b, v2.16b, v29.16b\n"
+ "zip1 v21.16b, v8.16b, v28.16b\n"
+ "zip1 v20.16b, v1.16b, v26.16b\n"
+ "zip1 v19.16b, v7.16b, v25.16b\n"
+ "zip1 v18.16b, v0.16b, v24.16b\n"
+ "zip1 v17.16b, v6.16b, v16.16b\n"
+ "zip2 v5.16b, v3.16b, v31.16b\n"
+ "zip2 v1.16b, v1.16b, v26.16b\n"
+ "zip2 v4.16b, v2.16b, v29.16b\n"
+ "zip2 v3.16b, v0.16b, v24.16b\n"
+ "zip2 v2.16b, v9.16b, v30.16b\n"
+ "zip2 v0.16b, v7.16b, v25.16b\n"
+ "zip2 v31.16b, v8.16b, v28.16b\n"
+ "zip2 v30.16b, v6.16b, v16.16b\n"
+ "zip1 v26.16b, v23.16b, v20.16b\n"
+ "zip1 v25.16b, v22.16b, v18.16b\n"
+ "zip1 v24.16b, v27.16b, v19.16b\n"
+ "zip1 v16.16b, v21.16b, v17.16b\n"
+ "zip2 v29.16b, v23.16b, v20.16b\n"
+ "zip2 v23.16b, v22.16b, v18.16b\n"
+ "zip2 v22.16b, v27.16b, v19.16b\n"
+ "zip2 v21.16b, v21.16b, v17.16b\n"
+ "zip1 v28.16b, v5.16b, v1.16b\n"
+ "zip1 v27.16b, v4.16b, v3.16b\n"
+ "zip1 v20.16b, v2.16b, v0.16b\n"
+ "zip1 v19.16b, v31.16b, v30.16b\n"
+ "zip1 v18.16b, v26.16b, v25.16b\n"
+ "zip1 v17.16b, v24.16b, v16.16b\n"
+ "zip2 v26.16b, v26.16b, v25.16b\n"
+ "zip2 v16.16b, v24.16b, v16.16b\n"
+ "zip2 v1.16b, v5.16b, v1.16b\n"
+ "zip2 v25.16b, v4.16b, v3.16b\n"
+ "zip2 v0.16b, v2.16b, v0.16b\n"
+ "zip2 v24.16b, v31.16b, v30.16b\n"
+ "zip1 v31.16b, v29.16b, v23.16b\n"
+ "zip1 v30.16b, v22.16b, v21.16b\n"
+ "zip2 v29.16b, v29.16b, v23.16b\n"
+ "zip2 v23.16b, v22.16b, v21.16b\n"
+ "zip1 v22.16b, v28.16b, v27.16b\n"
+ "zip1 v21.16b, v20.16b, v19.16b\n"
"zip2 v28.16b, v28.16b, v27.16b\n"
- "zip2 v27.16b, v26.16b, v21.16b\n"
- "zip1 v26.16b, v1.16b, v20.16b\n"
- "zip1 v21.16b, v19.16b, v16.16b\n"
- "zip2 v20.16b, v1.16b, v20.16b\n"
- "zip2 v19.16b, v19.16b, v16.16b\n"
- "zip1 v16.16b, v18.16b, v17.16b\n"
+ "zip2 v20.16b, v20.16b, v19.16b\n"
+ "zip1 v19.16b, v18.16b, v17.16b\n"
"zip2 v18.16b, v18.16b, v17.16b\n"
- "str q16, [x20, #0x0]\n"
+ "zip1 v17.16b, v26.16b, v16.16b\n"
+ "zip2 v16.16b, v26.16b, v16.16b\n"
+ "zip1 v27.16b, v1.16b, v25.16b\n"
+ "zip1 v26.16b, v0.16b, v24.16b\n"
+ "str q19, [x15, #0x0]\n"
+ "str q18, [x15, #0x10]\n"
+ "zip2 v25.16b, v1.16b, v25.16b\n"
+ "zip2 v24.16b, v0.16b, v24.16b\n"
+ "str q17, [x15, #0x20]\n"
+ "zip1 v19.16b, v31.16b, v30.16b\n"
+ "zip2 v18.16b, v31.16b, v30.16b\n"
+ "str q16, [x15, #0x30]\n"
+ "add x15, x15, %x[out_stride]\n"
+ "zip1 v17.16b, v29.16b, v23.16b\n"
+ "zip2 v16.16b, v29.16b, v23.16b\n"
+ "zip1 v23.16b, v22.16b, v21.16b\n"
+ "zip2 v22.16b, v22.16b, v21.16b\n"
+ "str q19, [x15, #0x0]\n"
+ "str q18, [x15, #0x10]\n"
+ "zip1 v21.16b, v28.16b, v20.16b\n"
+ "zip2 v20.16b, v28.16b, v20.16b\n"
+ "str q17, [x15, #0x20]\n"
+ "zip1 v19.16b, v27.16b, v26.16b\n"
+ "zip2 v18.16b, v27.16b, v26.16b\n"
+ "str q16, [x15, #0x30]\n"
+ "add x15, x15, %x[out_stride]\n"
"zip1 v17.16b, v25.16b, v24.16b\n"
"zip2 v16.16b, v25.16b, v24.16b\n"
- "str q18, [x20, #0x10]\n"
- "str q17, [x20, #0x20]\n"
- "zip1 v25.16b, v0.16b, v23.16b\n"
- "zip1 v24.16b, v31.16b, v22.16b\n"
- "str q16, [x20, #0x30]\n"
- "add x20, x20, %x[out_stride]\n"
- "zip2 v23.16b, v0.16b, v23.16b\n"
- "zip2 v22.16b, v31.16b, v22.16b\n"
- "zip1 v16.16b, v30.16b, v29.16b\n"
- "zip2 v17.16b, v30.16b, v29.16b\n"
- "str q16, [x20, #0x0]\n"
- "zip1 v16.16b, v28.16b, v27.16b\n"
- "zip2 v18.16b, v28.16b, v27.16b\n"
- "str q17, [x20, #0x10]\n"
- "str q16, [x20, #0x20]\n"
- "zip1 v17.16b, v26.16b, v21.16b\n"
- "zip2 v16.16b, v26.16b, v21.16b\n"
- "str q18, [x20, #0x30]\n"
- "add x20, x20, %x[out_stride]\n"
- "zip1 v21.16b, v20.16b, v19.16b\n"
- "zip2 v20.16b, v20.16b, v19.16b\n"
- "str q17, [x20, #0x0]\n"
- "zip1 v19.16b, v25.16b, v24.16b\n"
- "zip2 v18.16b, v25.16b, v24.16b\n"
- "str q16, [x20, #0x10]\n"
- "zip1 v17.16b, v23.16b, v22.16b\n"
- "zip2 v16.16b, v23.16b, v22.16b\n"
- "str q21, [x20, #0x20]\n"
- "str q20, [x20, #0x30]\n"
- "add x20, x20, %x[out_stride]\n"
- "str q19, [x20, #0x0]\n"
- "str q18, [x20, #0x10]\n"
- "str q17, [x20, #0x20]\n"
- "str q16, [x20, #0x30]\n"
- "add x20, x20, %x[out_stride]\n"
+ "str q23, [x15, #0x0]\n"
+ "str q22, [x15, #0x10]\n"
+ "str q21, [x15, #0x20]\n"
+ "str q20, [x15, #0x30]\n"
+ "add x15, x15, %x[out_stride]\n"
+ "str q19, [x15, #0x0]\n"
+ "str q18, [x15, #0x10]\n"
+ "str q17, [x15, #0x20]\n"
+ "str q16, [x15, #0x30]\n"
+ "add x15, x15, %x[out_stride]\n"
"bge 2b\n"
"3:" // Main row loop: Unroll column loop skip
- "cmp x21, #0x4\n"
+ "cmp x16, #0x4\n"
"blt 5f\n"
"4:" // Main row loop: Column loop
- "ldr s21, [x17], #0x4\n"
- "ldr s23, [x16], #0x4\n"
- "sub x21, x21, #0x4\n"
- "cmp x21, #0x4\n"
- "ldr s20, [x15], #0x4\n"
- "ldr s22, [x14], #0x4\n"
- "ldr s19, [x13], #0x4\n"
- "ldr s18, [x12], #0x4\n"
- "ldr s25, [x11], #0x4\n"
- "ldr s24, [x10], #0x4\n"
- "ldr s17, [x9], #0x4\n"
- "ldr s16, [x28], #0x4\n"
- "zip1 v21.16b, v21.16b, v17.16b\n"
- "zip1 v23.16b, v23.16b, v16.16b\n"
- "ldr s17, [x27], #0x4\n"
- "ldr s16, [x26], #0x4\n"
- "zip1 v20.16b, v20.16b, v17.16b\n"
- "zip1 v22.16b, v22.16b, v16.16b\n"
- "ldr s17, [x25], #0x4\n"
- "ldr s16, [x24], #0x4\n"
- "zip1 v19.16b, v19.16b, v17.16b\n"
- "zip1 v18.16b, v18.16b, v16.16b\n"
- "ldr s17, [x23], #0x4\n"
- "ldr s16, [x22], #0x4\n"
+ "ldr s31, [x17], #0x4\n"
+ "ldr s30, [x14], #0x4\n"
+ "sub x16, x16, #0x4\n"
+ "ldr s29, [x13], #0x4\n"
+ "ldr s28, [x12], #0x4\n"
+ "cmp x16, #0x4\n"
+ "ldr s27, [x11], #0x4\n"
+ "ldr s26, [x10], #0x4\n"
+ "ldr s25, [x9], #0x4\n"
+ "ldr s24, [x28], #0x4\n"
+ "ldr s20, [x27], #0x4\n"
+ "ldr s21, [x26], #0x4\n"
+ "ldr s23, [x25], #0x4\n"
+ "ldr s22, [x24], #0x4\n"
+ "ldr s19, [x23], #0x4\n"
+ "ldr s18, [x22], #0x4\n"
+ "ldr s17, [x21], #0x4\n"
+ "ldr s16, [x20], #0x4\n"
+ "zip1 v20.16b, v31.16b, v20.16b\n"
+ "zip1 v21.16b, v30.16b, v21.16b\n"
+ "zip1 v23.16b, v29.16b, v23.16b\n"
+ "zip1 v22.16b, v28.16b, v22.16b\n"
+ "zip1 v19.16b, v27.16b, v19.16b\n"
+ "zip1 v18.16b, v26.16b, v18.16b\n"
"zip1 v17.16b, v25.16b, v17.16b\n"
"zip1 v16.16b, v24.16b, v16.16b\n"
- "zip1 v21.16b, v21.16b, v19.16b\n"
- "zip1 v20.16b, v20.16b, v17.16b\n"
- "zip1 v19.16b, v23.16b, v18.16b\n"
+ "zip1 v20.16b, v20.16b, v19.16b\n"
+ "zip1 v21.16b, v21.16b, v18.16b\n"
+ "zip1 v19.16b, v23.16b, v17.16b\n"
"zip1 v16.16b, v22.16b, v16.16b\n"
- "zip1 v18.16b, v21.16b, v20.16b\n"
- "zip1 v17.16b, v19.16b, v16.16b\n"
- "zip2 v20.16b, v21.16b, v20.16b\n"
- "zip2 v19.16b, v19.16b, v16.16b\n"
- "zip1 v16.16b, v18.16b, v17.16b\n"
+ "zip1 v18.16b, v20.16b, v19.16b\n"
+ "zip1 v17.16b, v21.16b, v16.16b\n"
+ "zip2 v20.16b, v20.16b, v19.16b\n"
+ "zip2 v16.16b, v21.16b, v16.16b\n"
+ "zip1 v19.16b, v18.16b, v17.16b\n"
"zip2 v18.16b, v18.16b, v17.16b\n"
- "str q16, [x20, #0x0]\n"
- "zip1 v17.16b, v20.16b, v19.16b\n"
- "zip2 v16.16b, v20.16b, v19.16b\n"
- "str q18, [x20, #0x10]\n"
- "str q17, [x20, #0x20]\n"
- "str q16, [x20, #0x30]\n"
- "add x20, x20, %x[out_stride]\n"
+ "zip1 v17.16b, v20.16b, v16.16b\n"
+ "zip2 v16.16b, v20.16b, v16.16b\n"
+ "str q19, [x15, #0x0]\n"
+ "str q18, [x15, #0x10]\n"
+ "str q17, [x15, #0x20]\n"
+ "str q16, [x15, #0x30]\n"
+ "add x15, x15, %x[out_stride]\n"
"bge 4b\n"
"5:" // Main row loop: Column loop skip
- "cmp x21, #0x1\n"
- "blt 7f\n"
+ "cbz x16, 7f\n"
+ "movi v16.16b, #0x0\n"
+ "str q16, [x15, #0x0]\n"
+ "str q16, [x15, #0x10]\n"
+ "str q16, [x15, #0x20]\n"
+ "str q16, [x15, #0x30]\n"
"6:" // Main row loop: width 1 loop: loop
- "ldr b23, [x17], #0x1\n"
- "ldr b22, [x16], #0x1\n"
- "sub x21, x21, #0x1\n"
- "cmp x21, #0x1\n"
- "ldr b21, [x15], #0x1\n"
- "ldr b20, [x14], #0x1\n"
- "ldr b19, [x13], #0x1\n"
- "ldr b18, [x12], #0x1\n"
- "ldr b25, [x11], #0x1\n"
- "ldr b24, [x10], #0x1\n"
- "ldr b17, [x9], #0x1\n"
- "ldr b16, [x28], #0x1\n"
- "zip1 v23.16b, v23.16b, v17.16b\n"
- "zip1 v22.16b, v22.16b, v16.16b\n"
- "ldr b17, [x27], #0x1\n"
- "ldr b16, [x26], #0x1\n"
- "zip1 v21.16b, v21.16b, v17.16b\n"
- "zip1 v20.16b, v20.16b, v16.16b\n"
- "ldr b17, [x25], #0x1\n"
- "ldr b16, [x24], #0x1\n"
- "zip1 v19.16b, v19.16b, v17.16b\n"
- "zip1 v18.16b, v18.16b, v16.16b\n"
- "ldr b17, [x23], #0x1\n"
- "ldr b16, [x22], #0x1\n"
+ "ldr b31, [x17], #0x1\n"
+ "ldr b30, [x14], #0x1\n"
+ "sub x16, x16, #0x1\n"
+ "ldr b29, [x13], #0x1\n"
+ "ldr b28, [x12], #0x1\n"
+ "cmp x16, #0x1\n"
+ "ldr b27, [x11], #0x1\n"
+ "ldr b26, [x10], #0x1\n"
+ "ldr b25, [x9], #0x1\n"
+ "ldr b24, [x28], #0x1\n"
+ "ldr b23, [x27], #0x1\n"
+ "ldr b22, [x26], #0x1\n"
+ "ldr b21, [x25], #0x1\n"
+ "ldr b20, [x24], #0x1\n"
+ "ldr b19, [x23], #0x1\n"
+ "ldr b18, [x22], #0x1\n"
+ "ldr b17, [x21], #0x1\n"
+ "ldr b16, [x20], #0x1\n"
+ "zip1 v23.16b, v31.16b, v23.16b\n"
+ "zip1 v22.16b, v30.16b, v22.16b\n"
+ "zip1 v21.16b, v29.16b, v21.16b\n"
+ "zip1 v20.16b, v28.16b, v20.16b\n"
+ "zip1 v19.16b, v27.16b, v19.16b\n"
+ "zip1 v18.16b, v26.16b, v18.16b\n"
"zip1 v17.16b, v25.16b, v17.16b\n"
"zip1 v16.16b, v24.16b, v16.16b\n"
"zip1 v19.16b, v23.16b, v19.16b\n"
- "zip1 v17.16b, v21.16b, v17.16b\n"
"zip1 v18.16b, v22.16b, v18.16b\n"
+ "zip1 v17.16b, v21.16b, v17.16b\n"
"zip1 v16.16b, v20.16b, v16.16b\n"
"zip1 v17.16b, v19.16b, v17.16b\n"
"zip1 v16.16b, v18.16b, v16.16b\n"
"zip1 v16.16b, v17.16b, v16.16b\n"
- "str q16, [x20, #0x0]\n"
- "add x20, x20, #0x10\n"
+ "str q16, [x15, #0x0]\n"
+ "add x15, x15, #0x10\n"
"bge 6b\n"
- "7:" // Main row loop: width 1 loop: skip
+ "7:" // Main row loop: odd col skip
"cmp %x[height], #0x1\n"
"add %x[out], %x[out], #0x40\n"
"bge 1b\n"