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Diffstat (limited to 'files/source/compare_neon64.cc')
-rw-r--r-- | files/source/compare_neon64.cc | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/files/source/compare_neon64.cc b/files/source/compare_neon64.cc deleted file mode 100644 index 70fb9b91..00000000 --- a/files/source/compare_neon64.cc +++ /dev/null @@ -1,94 +0,0 @@ -/* - * Copyright 2012 The LibYuv Project Authors. All rights reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. An additional intellectual property rights grant can be found - * in the file PATENTS. All contributing project authors may - * be found in the AUTHORS file in the root of the source tree. - */ - -#include "libyuv/basic_types.h" - -#include "libyuv/compare_row.h" -#include "libyuv/row.h" - -#ifdef __cplusplus -namespace libyuv { -extern "C" { -#endif - -#if !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__) - -// 256 bits at a time -// uses short accumulator which restricts count to 131 KB -uint32_t HammingDistance_NEON(const uint8_t* src_a, - const uint8_t* src_b, - int count) { - uint32_t diff; - asm volatile( - "movi v4.8h, #0 \n" - - "1: \n" - "ld1 {v0.16b, v1.16b}, [%0], #32 \n" - "ld1 {v2.16b, v3.16b}, [%1], #32 \n" - "eor v0.16b, v0.16b, v2.16b \n" - "prfm pldl1keep, [%0, 448] \n" // prefetch 7 lines ahead - "eor v1.16b, v1.16b, v3.16b \n" - "cnt v0.16b, v0.16b \n" - "prfm pldl1keep, [%1, 448] \n" - "cnt v1.16b, v1.16b \n" - "subs %w2, %w2, #32 \n" - "add v0.16b, v0.16b, v1.16b \n" - "uadalp v4.8h, v0.16b \n" - "b.gt 1b \n" - - "uaddlv s4, v4.8h \n" - "fmov %w3, s4 \n" - : "+r"(src_a), "+r"(src_b), "+r"(count), "=r"(diff) - : - : "cc", "v0", "v1", "v2", "v3", "v4"); - return diff; -} - -uint32_t SumSquareError_NEON(const uint8_t* src_a, - const uint8_t* src_b, - int count) { - uint32_t sse; - asm volatile( - "eor v16.16b, v16.16b, v16.16b \n" - "eor v18.16b, v18.16b, v18.16b \n" - "eor v17.16b, v17.16b, v17.16b \n" - "eor v19.16b, v19.16b, v19.16b \n" - - "1: \n" - "ld1 {v0.16b}, [%0], #16 \n" - "ld1 {v1.16b}, [%1], #16 \n" - "subs %w2, %w2, #16 \n" - "usubl v2.8h, v0.8b, v1.8b \n" - "usubl2 v3.8h, v0.16b, v1.16b \n" - "prfm pldl1keep, [%0, 448] \n" // prefetch 7 lines ahead - "smlal v16.4s, v2.4h, v2.4h \n" - "smlal v17.4s, v3.4h, v3.4h \n" - "prfm pldl1keep, [%1, 448] \n" - "smlal2 v18.4s, v2.8h, v2.8h \n" - "smlal2 v19.4s, v3.8h, v3.8h \n" - "b.gt 1b \n" - - "add v16.4s, v16.4s, v17.4s \n" - "add v18.4s, v18.4s, v19.4s \n" - "add v19.4s, v16.4s, v18.4s \n" - "addv s0, v19.4s \n" - "fmov %w3, s0 \n" - : "+r"(src_a), "+r"(src_b), "+r"(count), "=r"(sse) - : - : "cc", "v0", "v1", "v2", "v3", "v16", "v17", "v18", "v19"); - return sse; -} - -#endif // !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__) - -#ifdef __cplusplus -} // extern "C" -} // namespace libyuv -#endif |