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Remove unused compression methods. #32442

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Sep 20, 2024
Merged

Remove unused compression methods. #32442

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86 changes: 0 additions & 86 deletions searchlib/src/vespa/searchlib/bitcompression/compression.h
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Original file line number Diff line number Diff line change
Expand Up @@ -302,45 +302,6 @@ class CodingTables
ctx ## valI, EC); \
} while (0)

#define UC64BE_DECODEDEXPGOLOMB_NS(prefix, k, EC) \
do { \
if ((prefix ## Val & TOP_BIT64) == 0) { \
length = 1; \
prefix ## Val <<= 1; \
val64 = 0; \
UC64BE_READBITS_NS(prefix, EC); \
} else { \
if ((prefix ## Val & TOP_2_BITS64) != TOP_2_BITS64) { \
length = 2; \
prefix ## Val <<= 2; \
val64 = 1; \
UC64BE_READBITS_NS(prefix, EC); \
} else { \
length = 2; \
prefix ## Val <<= 2; \
UC64BE_READBITS_NS(prefix, EC); \
UC64BE_DECODEEXPGOLOMB_NS(prefix, k, EC); \
val64 += 2; \
} \
} \
} while (0)

#define UC64BE_DECODED0EXPGOLOMB_NS(prefix, k, EC) \
do { \
if ((prefix ## Val & TOP_BIT64) == 0) { \
length = 1; \
prefix ## Val <<= 1; \
val64 = 0; \
UC64BE_READBITS_NS(prefix, EC); \
} else { \
length = 1; \
prefix ## Val <<= 1; \
UC64BE_READBITS_NS(prefix, EC); \
UC64BE_DECODEEXPGOLOMB_NS(prefix, k, EC); \
val64 += 1; \
} \
} while (0)

#define UC64LE_READBITS(val, valI, preRead, cacheInt, EC) \
do { \
if (__builtin_expect(length <= preRead, true)) { \
Expand Down Expand Up @@ -1008,53 +969,6 @@ class EncodeContext64 : public EncodeContext64EBase<bigEndian>
return k + asmlog2((x >> k) + 1) * 2 + 1;
}

void
encodeDExpGolomb(uint64_t x, uint32_t k)
{
if (x == 0) {
writeBits(0, 1);
return;
}
if (x == 1) {
writeBits(bigEndian ? 2 : 1, 2);
return;
}
writeBits(3, 2);
encodeExpGolomb(x - 2, k);
}

static uint32_t
encodeDExpGolombSpace(uint64_t x, uint32_t k)
{
if (x == 0) {
return 1;
}
if (x == 1) {
return 2;
}
return 2 + encodeExpGolombSpace(x, k);
}

void
encodeD0ExpGolomb(uint64_t x, uint32_t k)
{
if (x == 0) {
writeBits(0, 1);
return;
}
writeBits(1, 1);
encodeExpGolomb(x - 1, k);
}

static uint32_t
encodeD0ExpGolombSpace(uint64_t x, uint32_t k)
{
if (x == 0) {
return 1;
}
return 1 + encodeExpGolombSpace(x, k);
}

static uint64_t
convertToUnsigned(int64_t val)
{
Expand Down