Revert "Update CPU kernels to remove x19"

This reverts commit 3c59f01c209d2732a15d97d65565ead964787a8b.

Resolves: COMPMID-5817
Change-Id: Ie2443a21854a95db1e3d0cafa2121c0187a5e237
Signed-off-by: Michael Tyler <michael.tyler@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/8974
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/NEON/kernels/arm_gemm/transforms/a64_transpose_interleave_24_bf16fp32.hpp b/src/core/NEON/kernels/arm_gemm/transforms/a64_transpose_interleave_24_bf16fp32.hpp
index 799a9cd..0a628d3 100644
--- a/src/core/NEON/kernels/arm_gemm/transforms/a64_transpose_interleave_24_bf16fp32.hpp
+++ b/src/core/NEON/kernels/arm_gemm/transforms/a64_transpose_interleave_24_bf16fp32.hpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, 2023 Arm Limited.
+ * Copyright (c) 2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -10,16 +10,16 @@
  * sell copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
  */
 
 #pragma once
@@ -36,245 +36,245 @@
       "cmp %x[height], #0x4\n"
       "blt 10f\n"
       "1:"  // Main row loop: Head
-      "mov x25, %x[in]\n"
-      "mov x24, %x[width]\n"
-      "add x23, x25, %x[in_stride]\n"
-      "add x22, x23, %x[in_stride]\n"
-      "add x20, x22, %x[in_stride]\n"
-      "cmp x24, #0x18\n"
+      "mov x24, %x[in]\n"
+      "mov x23, %x[out]\n"
+      "add x22, x24, %x[in_stride]\n"
+      "add x21, x22, %x[in_stride]\n"
+      "add x20, x21, %x[in_stride]\n"
       "add %x[in], x20, %x[in_stride]\n"
-      "mov x21, %x[out]\n"
       "sub %x[height], %x[height], #0x4\n"
+      "mov x19, %x[width]\n"
+      "cmp x19, #0x18\n"
       "blt 3f\n"
       "2:"  // Main row loop: Unroll column loop
-      "ldr q18, [x25], #0x10\n"
-      "ldr q17, [x23], #0x10\n"
-      "sub x24, x24, #0x18\n"
-      "shll v26.4s, v18.4h, #0x10\n"
-      "ldr q16, [x22], #0x10\n"
-      "ldr q25, [x20], #0x10\n"
-      "shll2 v24.4s, v18.8h, #0x10\n"
-      "shll v5.4s, v17.4h, #0x10\n"
-      "ldr q23, [x25], #0x10\n"
-      "ldr q22, [x23], #0x10\n"
-      "shll v21.4s, v23.4h, #0x10\n"
-      "shll2 v4.4s, v17.8h, #0x10\n"
-      "ldr q20, [x22], #0x10\n"
-      "ldr q3, [x20], #0x10\n"
-      "shll v2.4s, v22.4h, #0x10\n"
-      "shll v1.4s, v16.4h, #0x10\n"
-      "ldr q19, [x25], #0x10\n"
-      "ldr q18, [x23], #0x10\n"
-      "shll2 v0.4s, v16.8h, #0x10\n"
-      "shll v31.4s, v20.4h, #0x10\n"
+      "ldr q17, [x24], #0x10\n"
+      "shll v3.4s, v17.4h, #0x10\n"
+      "ldr q16, [x24], #0x10\n"
+      "sub x19, x19, #0x18\n"
+      "shll2 v23.4s, v17.8h, #0x10\n"
       "ldr q17, [x22], #0x10\n"
-      "ldr q16, [x20], #0x10\n"
-      "shll v30.4s, v25.4h, #0x10\n"
-      "shll2 v29.4s, v25.8h, #0x10\n"
-      "shll v28.4s, v3.4h, #0x10\n"
-      "str q26, [x21, #0x0]\n"
-      "cmp x24, #0x18\n"
-      "shll2 v27.4s, v23.8h, #0x10\n"
-      "str q24, [x21, #0x10]\n"
-      "shll v26.4s, v19.4h, #0x10\n"
-      "shll2 v25.4s, v19.8h, #0x10\n"
-      "str q21, [x21, #0x20]\n"
-      "shll2 v24.4s, v22.8h, #0x10\n"
-      "shll v23.4s, v18.4h, #0x10\n"
-      "str q5, [x21, #0x30]\n"
-      "shll2 v22.4s, v18.8h, #0x10\n"
-      "shll2 v21.4s, v20.8h, #0x10\n"
-      "str q4, [x21, #0x40]\n"
-      "shll v20.4s, v17.4h, #0x10\n"
-      "shll2 v19.4s, v17.8h, #0x10\n"
-      "str q2, [x21, #0x50]\n"
-      "shll2 v18.4s, v3.8h, #0x10\n"
-      "shll v17.4s, v16.4h, #0x10\n"
-      "str q1, [x21, #0x60]\n"
-      "shll2 v16.4s, v16.8h, #0x10\n"
-      "str q0, [x21, #0x70]\n"
-      "str q31, [x21, #0x80]\n"
-      "str q30, [x21, #0x90]\n"
-      "str q29, [x21, #0xa0]\n"
-      "str q28, [x21, #0xb0]\n"
-      "add x21, x21, %x[out_stride]\n"
-      "str q27, [x21, #0x0]\n"
-      "str q26, [x21, #0x10]\n"
-      "str q25, [x21, #0x20]\n"
-      "str q24, [x21, #0x30]\n"
-      "str q23, [x21, #0x40]\n"
-      "str q22, [x21, #0x50]\n"
-      "str q21, [x21, #0x60]\n"
-      "str q20, [x21, #0x70]\n"
-      "str q19, [x21, #0x80]\n"
-      "str q18, [x21, #0x90]\n"
-      "str q17, [x21, #0xa0]\n"
-      "str q16, [x21, #0xb0]\n"
-      "add x21, x21, %x[out_stride]\n"
+      "cmp x19, #0x18\n"
+      "shll v22.4s, v16.4h, #0x10\n"
+      "ldr q19, [x24], #0x10\n"
+      "shll2 v2.4s, v16.8h, #0x10\n"
+      "ldr q16, [x22], #0x10\n"
+      "shll v21.4s, v17.4h, #0x10\n"
+      "ldr q18, [x21], #0x10\n"
+      "shll2 v1.4s, v17.8h, #0x10\n"
+      "ldr q0, [x20], #0x10\n"
+      "shll v31.4s, v19.4h, #0x10\n"
+      "ldr q17, [x22], #0x10\n"
+      "shll2 v30.4s, v19.8h, #0x10\n"
+      "shll v29.4s, v16.4h, #0x10\n"
+      "ldr q20, [x21], #0x10\n"
+      "shll2 v28.4s, v16.8h, #0x10\n"
+      "ldr q27, [x20], #0x10\n"
+      "shll v19.4s, v18.4h, #0x10\n"
+      "ldr q16, [x21], #0x10\n"
+      "shll v26.4s, v17.4h, #0x10\n"
+      "shll2 v25.4s, v17.8h, #0x10\n"
+      "ldr q24, [x20], #0x10\n"
+      "shll2 v18.4s, v18.8h, #0x10\n"
+      "str q3, [x23, #0x0]\n"
+      "shll v17.4s, v20.4h, #0x10\n"
+      "str q23, [x23, #0x10]\n"
+      "shll2 v23.4s, v20.8h, #0x10\n"
+      "str q22, [x23, #0x20]\n"
+      "shll v22.4s, v16.4h, #0x10\n"
+      "str q21, [x23, #0x30]\n"
+      "shll2 v21.4s, v16.8h, #0x10\n"
+      "str q1, [x23, #0x40]\n"
+      "shll v16.4s, v0.4h, #0x10\n"
+      "str q29, [x23, #0x50]\n"
+      "shll2 v20.4s, v0.8h, #0x10\n"
+      "str q19, [x23, #0x60]\n"
+      "shll v19.4s, v27.4h, #0x10\n"
+      "str q18, [x23, #0x70]\n"
+      "shll2 v18.4s, v27.8h, #0x10\n"
+      "str q17, [x23, #0x80]\n"
+      "shll v17.4s, v24.4h, #0x10\n"
+      "str q16, [x23, #0x90]\n"
+      "shll2 v16.4s, v24.8h, #0x10\n"
+      "str q20, [x23, #0xa0]\n"
+      "str q19, [x23, #0xb0]\n"
+      "add x23, x23, %x[out_stride]\n"
+      "str q2, [x23, #0x0]\n"
+      "str q31, [x23, #0x10]\n"
+      "str q30, [x23, #0x20]\n"
+      "str q28, [x23, #0x30]\n"
+      "str q26, [x23, #0x40]\n"
+      "str q25, [x23, #0x50]\n"
+      "str q23, [x23, #0x60]\n"
+      "str q22, [x23, #0x70]\n"
+      "str q21, [x23, #0x80]\n"
+      "str q18, [x23, #0x90]\n"
+      "str q17, [x23, #0xa0]\n"
+      "str q16, [x23, #0xb0]\n"
+      "add x23, x23, %x[out_stride]\n"
       "bge 2b\n"
       "3:"  // Main row loop: Unroll column loop skip
-      "cmp x24, #0xc\n"
+      "cmp x19, #0xc\n"
       "blt 5f\n"
       "4:"  // Main row loop: Column loop
-      "ldr q16, [x25], #0x10\n"
-      "ldr q21, [x23], #0x10\n"
-      "sub x24, x24, #0xc\n"
-      "cmp x24, #0xc\n"
-      "ldr q20, [x22], #0x10\n"
-      "ldr q27, [x20], #0x10\n"
-      "shll v19.4s, v16.4h, #0x10\n"
-      "shll2 v26.4s, v16.8h, #0x10\n"
-      "ldr d16, [x25], #0x8\n"
-      "ldr d18, [x23], #0x8\n"
-      "shll v25.4s, v16.4h, #0x10\n"
-      "shll v24.4s, v21.4h, #0x10\n"
-      "ldr d17, [x22], #0x8\n"
-      "ldr d16, [x20], #0x8\n"
-      "shll2 v23.4s, v21.8h, #0x10\n"
-      "shll v22.4s, v18.4h, #0x10\n"
-      "shll v21.4s, v20.4h, #0x10\n"
-      "shll2 v20.4s, v20.8h, #0x10\n"
-      "str q19, [x21, #0x0]\n"
+      "ldr q17, [x24], #0x10\n"
       "shll v19.4s, v17.4h, #0x10\n"
-      "shll v18.4s, v27.4h, #0x10\n"
-      "str q26, [x21, #0x10]\n"
-      "shll2 v17.4s, v27.8h, #0x10\n"
+      "ldr d16, [x24], #0x8\n"
+      "sub x19, x19, #0xc\n"
+      "shll2 v27.4s, v17.8h, #0x10\n"
+      "ldr q17, [x22], #0x10\n"
+      "cmp x19, #0xc\n"
+      "shll v26.4s, v16.4h, #0x10\n"
+      "ldr q16, [x21], #0x10\n"
+      "ldr q25, [x20], #0x10\n"
+      "shll v24.4s, v17.4h, #0x10\n"
+      "shll2 v23.4s, v17.8h, #0x10\n"
+      "ldr d18, [x22], #0x8\n"
+      "shll v22.4s, v16.4h, #0x10\n"
+      "ldr d17, [x21], #0x8\n"
+      "shll2 v21.4s, v16.8h, #0x10\n"
+      "ldr d16, [x20], #0x8\n"
+      "shll v20.4s, v25.4h, #0x10\n"
+      "str q19, [x23, #0x0]\n"
+      "shll v19.4s, v18.4h, #0x10\n"
+      "str q27, [x23, #0x10]\n"
+      "shll2 v18.4s, v25.8h, #0x10\n"
+      "str q26, [x23, #0x20]\n"
+      "shll v17.4s, v17.4h, #0x10\n"
+      "str q24, [x23, #0x30]\n"
       "shll v16.4s, v16.4h, #0x10\n"
-      "str q25, [x21, #0x20]\n"
-      "str q24, [x21, #0x30]\n"
-      "str q23, [x21, #0x40]\n"
-      "str q22, [x21, #0x50]\n"
-      "str q21, [x21, #0x60]\n"
-      "str q20, [x21, #0x70]\n"
-      "str q19, [x21, #0x80]\n"
-      "str q18, [x21, #0x90]\n"
-      "str q17, [x21, #0xa0]\n"
-      "str q16, [x21, #0xb0]\n"
-      "add x21, x21, %x[out_stride]\n"
+      "str q23, [x23, #0x40]\n"
+      "str q19, [x23, #0x50]\n"
+      "str q22, [x23, #0x60]\n"
+      "str q21, [x23, #0x70]\n"
+      "str q17, [x23, #0x80]\n"
+      "str q20, [x23, #0x90]\n"
+      "str q18, [x23, #0xa0]\n"
+      "str q16, [x23, #0xb0]\n"
+      "add x23, x23, %x[out_stride]\n"
       "bge 4b\n"
       "5:"  // Main row loop: Column loop skip
-      "cmp x24, #0x4\n"
+      "cmp x19, #0x4\n"
       "blt 7f\n"
       "6:"  // Main row loop: width 4 loop: loop
-      "ldr d19, [x25], #0x8\n"
-      "ldr d18, [x23], #0x8\n"
-      "sub x24, x24, #0x4\n"
-      "cmp x24, #0x4\n"
-      "ldr d17, [x22], #0x8\n"
+      "ldr d16, [x24], #0x8\n"
+      "shll v19.4s, v16.4h, #0x10\n"
+      "ldr d16, [x22], #0x8\n"
+      "sub x19, x19, #0x4\n"
+      "shll v18.4s, v16.4h, #0x10\n"
+      "ldr d16, [x21], #0x8\n"
+      "cmp x19, #0x4\n"
+      "shll v17.4s, v16.4h, #0x10\n"
       "ldr d16, [x20], #0x8\n"
-      "shll v19.4s, v19.4h, #0x10\n"
-      "shll v18.4s, v18.4h, #0x10\n"
-      "shll v17.4s, v17.4h, #0x10\n"
+      "str q19, [x23, #0x0]\n"
       "shll v16.4s, v16.4h, #0x10\n"
-      "str q19, [x21, #0x0]\n"
-      "str q18, [x21, #0x30]\n"
-      "str q17, [x21, #0x60]\n"
-      "str q16, [x21, #0x90]\n"
-      "add x21, x21, #0x10\n"
+      "str q18, [x23, #0x30]\n"
+      "str q17, [x23, #0x60]\n"
+      "str q16, [x23, #0x90]\n"
+      "add x23, x23, #0x10\n"
       "bge 6b\n"
       "7:"  // Main row loop: width 4 loop: skip
-      "cmp x24, #0x1\n"
+      "cmp x19, #0x1\n"
       "blt 9f\n"
       "8:"  // Main row loop: width 1 loop: loop
-      "ldr h19, [x25], #0x2\n"
-      "ldr h18, [x23], #0x2\n"
-      "sub x24, x24, #0x1\n"
-      "cmp x24, #0x1\n"
-      "ldr h17, [x22], #0x2\n"
+      "ldr h16, [x24], #0x2\n"
+      "shll v19.4s, v16.4h, #0x10\n"
+      "ldr h16, [x22], #0x2\n"
+      "sub x19, x19, #0x1\n"
+      "shll v18.4s, v16.4h, #0x10\n"
+      "ldr h16, [x21], #0x2\n"
+      "cmp x19, #0x1\n"
+      "shll v17.4s, v16.4h, #0x10\n"
       "ldr h16, [x20], #0x2\n"
-      "shll v19.4s, v19.4h, #0x10\n"
-      "shll v18.4s, v18.4h, #0x10\n"
-      "shll v17.4s, v17.4h, #0x10\n"
+      "str s19, [x23, #0x0]\n"
       "shll v16.4s, v16.4h, #0x10\n"
-      "str s19, [x21, #0x0]\n"
-      "str s18, [x21, #0x30]\n"
-      "str s17, [x21, #0x60]\n"
-      "str s16, [x21, #0x90]\n"
-      "add x21, x21, #0x4\n"
+      "str s18, [x23, #0x30]\n"
+      "str s17, [x23, #0x60]\n"
+      "str s16, [x23, #0x90]\n"
+      "add x23, x23, #0x4\n"
       "bge 8b\n"
       "9:"  // Main row loop: width 1 loop: skip
-      "cmp %x[height], #0x4\n"
       "add %x[out], %x[out], #0xc0\n"
+      "cmp %x[height], #0x4\n"
       "bge 1b\n"
       "cbz %x[height], 20f\n"
       "10:"  // Main loop skip
 
       "11:"  // Tail row loop: Head
-      "mov x20, %x[width]\n"
-      "mov x25, %x[in]\n"
-      "cmp x20, #0x18\n"
-      "add %x[in], x25, %x[in_stride]\n"
-      "mov x21, %x[out]\n"
+      "mov x24, %x[in]\n"
+      "mov x23, %x[out]\n"
+      "add %x[in], x24, %x[in_stride]\n"
       "sub %x[height], %x[height], #0x1\n"
+      "mov x19, %x[width]\n"
+      "cmp x19, #0x18\n"
       "blt 13f\n"
       "12:"  // Tail row loop: Unroll column loop
-      "ldr q16, [x25], #0x10\n"
-      "ldr q20, [x25], #0x10\n"
-      "sub x20, x20, #0x18\n"
-      "shll v18.4s, v16.4h, #0x10\n"
-      "ldr q19, [x25], #0x10\n"
+      "ldr q16, [x24], #0x10\n"
+      "shll v20.4s, v16.4h, #0x10\n"
+      "ldr q18, [x24], #0x10\n"
+      "sub x19, x19, #0x18\n"
       "shll2 v17.4s, v16.8h, #0x10\n"
-      "shll v16.4s, v20.4h, #0x10\n"
-      "str q18, [x21, #0x0]\n"
-      "str q17, [x21, #0x10]\n"
-      "cmp x20, #0x18\n"
-      "shll2 v18.4s, v20.8h, #0x10\n"
+      "ldr q19, [x24], #0x10\n"
+      "shll v16.4s, v18.4h, #0x10\n"
+      "cmp x19, #0x18\n"
+      "shll2 v18.4s, v18.8h, #0x10\n"
+      "str q20, [x23, #0x0]\n"
+      "str q17, [x23, #0x10]\n"
       "shll v17.4s, v19.4h, #0x10\n"
-      "str q16, [x21, #0x20]\n"
-      "add x21, x21, %x[out_stride]\n"
+      "str q16, [x23, #0x20]\n"
+      "add x23, x23, %x[out_stride]\n"
       "shll2 v16.4s, v19.8h, #0x10\n"
-      "str q18, [x21, #0x0]\n"
-      "str q17, [x21, #0x10]\n"
-      "str q16, [x21, #0x20]\n"
-      "add x21, x21, %x[out_stride]\n"
+      "str q18, [x23, #0x0]\n"
+      "str q17, [x23, #0x10]\n"
+      "str q16, [x23, #0x20]\n"
+      "add x23, x23, %x[out_stride]\n"
       "bge 12b\n"
       "13:"  // Tail row loop: Unroll column loop skip
-      "cmp x20, #0xc\n"
+      "cmp x19, #0xc\n"
       "blt 15f\n"
       "14:"  // Tail row loop: Column loop
-      "ldr q17, [x25], #0x10\n"
-      "ldr d18, [x25], #0x8\n"
-      "sub x20, x20, #0xc\n"
-      "cmp x20, #0xc\n"
-      "shll v16.4s, v17.4h, #0x10\n"
+      "ldr q17, [x24], #0x10\n"
+      "shll v18.4s, v17.4h, #0x10\n"
+      "ldr d16, [x24], #0x8\n"
+      "sub x19, x19, #0xc\n"
       "shll2 v17.4s, v17.8h, #0x10\n"
-      "str q16, [x21, #0x0]\n"
-      "shll v16.4s, v18.4h, #0x10\n"
-      "str q17, [x21, #0x10]\n"
-      "str q16, [x21, #0x20]\n"
-      "add x21, x21, %x[out_stride]\n"
+      "str q18, [x23, #0x0]\n"
+      "cmp x19, #0xc\n"
+      "shll v16.4s, v16.4h, #0x10\n"
+      "str q17, [x23, #0x10]\n"
+      "str q16, [x23, #0x20]\n"
+      "add x23, x23, %x[out_stride]\n"
       "bge 14b\n"
       "15:"  // Tail row loop: Column loop skip
-      "cmp x20, #0x4\n"
+      "cmp x19, #0x4\n"
       "blt 17f\n"
       "16:"  // Tail row loop: width 4 loop: loop
-      "ldr d16, [x25], #0x8\n"
-      "sub x20, x20, #0x4\n"
-      "cmp x20, #0x4\n"
+      "ldr d16, [x24], #0x8\n"
       "shll v16.4s, v16.4h, #0x10\n"
-      "str q16, [x21, #0x0]\n"
-      "add x21, x21, #0x10\n"
+      "str q16, [x23, #0x0]\n"
+      "sub x19, x19, #0x4\n"
+      "add x23, x23, #0x10\n"
+      "cmp x19, #0x4\n"
       "bge 16b\n"
       "17:"  // Tail row loop: width 4 loop: skip
-      "cmp x20, #0x1\n"
+      "cmp x19, #0x1\n"
       "blt 19f\n"
       "18:"  // Tail row loop: width 1 loop: loop
-      "ldr h16, [x25], #0x2\n"
-      "sub x20, x20, #0x1\n"
-      "cmp x20, #0x1\n"
+      "ldr h16, [x24], #0x2\n"
       "shll v16.4s, v16.4h, #0x10\n"
-      "str s16, [x21, #0x0]\n"
-      "add x21, x21, #0x4\n"
+      "str s16, [x23, #0x0]\n"
+      "sub x19, x19, #0x1\n"
+      "add x23, x23, #0x4\n"
+      "cmp x19, #0x1\n"
       "bge 18b\n"
       "19:"  // Tail row loop: width 1 loop: skip
-      "cmp %x[height], #0x1\n"
       "add %x[out], %x[out], #0x30\n"
+      "cmp %x[height], #0x1\n"
       "bge 11b\n"
       "20:"  // Done
 
       : [height] "+&r" (height), [in] "+&r" (in), [out] "+&r" (out)
       : [in_stride] "r" (in_stride), [out_stride] "r" (out_stride), [width] "r" (width)
-      : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", "x20", "x21", "x22", "x23", "x24", "x25"
+      : "cc", "memory", "v0", "v1", "v2", "v3", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", "x19", "x20", "x21", "x22", "x23", "x24"
     );
 }