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85923c8f30
Update zlib-ng to 2.2.1 #26113 Release: https://github.com/zlib-ng/zlib-ng/releases/tag/2.2.1 ARM diagnostics patch: https://github.com/zlib-ng/zlib-ng/pull/1774 ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [ ] There is a reference to the original bug report and related work - [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/* compare256_rvv.c - RVV version of compare256
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* Copyright (C) 2023 SiFive, Inc. All rights reserved.
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* Contributed by Alex Chiang <alex.chiang@sifive.com>
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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#ifdef RISCV_RVV
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#include "zbuild.h"
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#include "zutil_p.h"
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#include "deflate.h"
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#include "fallback_builtins.h"
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#include <riscv_vector.h>
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static inline uint32_t compare256_rvv_static(const uint8_t *src0, const uint8_t *src1) {
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uint32_t len = 0;
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size_t vl;
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long found_diff;
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do {
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vl = __riscv_vsetvl_e8m4(256 - len);
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vuint8m4_t v_src0 = __riscv_vle8_v_u8m4(src0, vl);
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vuint8m4_t v_src1 = __riscv_vle8_v_u8m4(src1, vl);
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vbool2_t v_mask = __riscv_vmsne_vv_u8m4_b2(v_src0, v_src1, vl);
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found_diff = __riscv_vfirst_m_b2(v_mask, vl);
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if (found_diff >= 0)
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return len + (uint32_t)found_diff;
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src0 += vl, src1 += vl, len += vl;
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} while (len < 256);
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return 256;
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}
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Z_INTERNAL uint32_t compare256_rvv(const uint8_t *src0, const uint8_t *src1) {
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return compare256_rvv_static(src0, src1);
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}
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#define LONGEST_MATCH longest_match_rvv
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#define COMPARE256 compare256_rvv_static
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#include "match_tpl.h"
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#define LONGEST_MATCH_SLOW
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#define LONGEST_MATCH longest_match_slow_rvv
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#define COMPARE256 compare256_rvv_static
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#include "match_tpl.h"
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#endif // RISCV_RVV
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