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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
33 lines
934 B
C
33 lines
934 B
C
/* slide_hash_rvv.c - RVV version of slide_hash
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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 <riscv_vector.h>
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#include "zbuild.h"
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#include "deflate.h"
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static inline void slide_hash_chain(Pos *table, uint32_t entries, uint16_t wsize) {
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size_t vl;
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while (entries > 0) {
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vl = __riscv_vsetvl_e16m4(entries);
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vuint16m4_t v_tab = __riscv_vle16_v_u16m4(table, vl);
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vuint16m4_t v_diff = __riscv_vssubu_vx_u16m4(v_tab, wsize, vl);
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__riscv_vse16_v_u16m4(table, v_diff, vl);
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table += vl, entries -= vl;
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}
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}
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Z_INTERNAL void slide_hash_rvv(deflate_state *s) {
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uint16_t wsize = (uint16_t)s->w_size;
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slide_hash_chain(s->head, HASH_SIZE, wsize);
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slide_hash_chain(s->prev, wsize, wsize);
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}
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#endif // RISCV_RVV
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