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Replace compiler-specific fallthrough with more general form #8

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Mar 26, 2024
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Replace compiler-specific fallthrough with more general form #8

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28 changes: 14 additions & 14 deletions include/hash.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -107,21 +107,21 @@ static uint64_t hash128(const void* key, const uint64_t len)

switch(len & 15)
{
case 15: k2 ^= ((uint64_t)tail[14]) << 48; [[clang::fallthrough]];
case 14: k2 ^= ((uint64_t)tail[13]) << 40; [[clang::fallthrough]];
case 13: k2 ^= ((uint64_t)tail[12]) << 32; [[clang::fallthrough]];
case 12: k2 ^= ((uint64_t)tail[11]) << 24; [[clang::fallthrough]];
case 11: k2 ^= ((uint64_t)tail[10]) << 16; [[clang::fallthrough]];
case 10: k2 ^= ((uint64_t)tail[ 9]) << 8; [[clang::fallthrough]];
case 15: k2 ^= ((uint64_t)tail[14]) << 48; [[fallthrough]];
case 14: k2 ^= ((uint64_t)tail[13]) << 40; [[fallthrough]];
case 13: k2 ^= ((uint64_t)tail[12]) << 32; [[fallthrough]];
case 12: k2 ^= ((uint64_t)tail[11]) << 24; [[fallthrough]];
case 11: k2 ^= ((uint64_t)tail[10]) << 16; [[fallthrough]];
case 10: k2 ^= ((uint64_t)tail[ 9]) << 8; [[fallthrough]];
case 9: k2 ^= ((uint64_t)tail[ 8]) << 0;
k2 *= c2; k2 = ROTL64(k2,33); k2 *= c1; h2 ^= k2; [[clang::fallthrough]];
case 8: k1 ^= ((uint64_t)tail[ 7]) << 56; [[clang::fallthrough]];
case 7: k1 ^= ((uint64_t)tail[ 6]) << 48; [[clang::fallthrough]];
case 6: k1 ^= ((uint64_t)tail[ 5]) << 40; [[clang::fallthrough]];
case 5: k1 ^= ((uint64_t)tail[ 4]) << 32; [[clang::fallthrough]];
case 4: k1 ^= ((uint64_t)tail[ 3]) << 24; [[clang::fallthrough]];
case 3: k1 ^= ((uint64_t)tail[ 2]) << 16; [[clang::fallthrough]];
case 2: k1 ^= ((uint64_t)tail[ 1]) << 8; [[clang::fallthrough]];
k2 *= c2; k2 = ROTL64(k2,33); k2 *= c1; h2 ^= k2; [[fallthrough]];
case 8: k1 ^= ((uint64_t)tail[ 7]) << 56; [[fallthrough]];
case 7: k1 ^= ((uint64_t)tail[ 6]) << 48; [[fallthrough]];
case 6: k1 ^= ((uint64_t)tail[ 5]) << 40; [[fallthrough]];
case 5: k1 ^= ((uint64_t)tail[ 4]) << 32; [[fallthrough]];
case 4: k1 ^= ((uint64_t)tail[ 3]) << 24; [[fallthrough]];
case 3: k1 ^= ((uint64_t)tail[ 2]) << 16; [[fallthrough]];
case 2: k1 ^= ((uint64_t)tail[ 1]) << 8; [[fallthrough]];
case 1: k1 ^= ((uint64_t)tail[ 0]) << 0;
k1 *= c1; k1 = ROTL64(k1,31); k1 *= c2; h1 ^= k1;
default: // do nothing;
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