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riscv: add prefetch optimization for doubleFast compressor #4668

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riscv: add prefetch optimization for doubleFast compressor #4668

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4 changes: 2 additions & 2 deletions lib/compress/zstd_double_fast.c
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Original file line number Diff line number Diff line change
Expand Up @@ -233,7 +233,7 @@ size_t ZSTD_compressBlock_doubleFast_noDict_generic(
hl0 = hl1;
idxl0 = idxl1;
matchl0 = matchl1;
#if defined(__aarch64__)
#if defined(__aarch64__) || (defined(__riscv) && (__riscv_xlen == 64))
PREFETCH_L1(ip+256);
#endif
} while (ip1 <= ilimit);
Expand Down Expand Up @@ -448,7 +448,7 @@ size_t ZSTD_compressBlock_doubleFast_dictMatchState_generic(
} }

ip += ((ip-anchor) >> kSearchStrength) + 1;
#if defined(__aarch64__)
#if defined(__aarch64__) || (defined(__riscv) && (__riscv_xlen == 64))
PREFETCH_L1(ip+256);
#endif
continue;
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