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0608a9a086
* Optimize Marshal dump of large fixnum Marshal's FIXNUM type only supports 31-bit fixnums, so on 64-bit platforms the 63-bit fixnums need to be represented in Marshal's BIGNUM. Previously this was done by converting to a bugnum and serializing the bignum object. This commit avoids allocating the intermediate bignum object, instead outputting the T_FIXNUM directly to a Marshal bignum. This maintains the same representation as the previous implementation, including not using LINKs for these large fixnums (an artifact of the previous implementation always allocating a new BIGNUM). This commit also avoids unnecessary st_lookups on immediate values, which we know will not be in that table. * Fastpath for loading FIXNUM from Marshal bignum * Run update-deps
22 lines
740 B
YAML
22 lines
740 B
YAML
prelude: |
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smallint_array = 1000.times.map { |x| x }
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bigint32_array = 1000.times.map { |x| x + 2**32 }
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bigint64_array = 1000.times.map { |x| x + 2**64 }
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smallint_dump = Marshal.dump(smallint_array)
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bigint32_dump = Marshal.dump(bigint32_array)
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bigint64_dump = Marshal.dump(bigint64_array)
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benchmark:
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marshal_dump_integer_small: |
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Marshal.dump(smallint_array)
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marshal_dump_integer_over_32_bit: |
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Marshal.dump(bigint32_array)
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marshal_dump_integer_over_64_bit: |
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Marshal.dump(bigint64_array)
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marshal_load_integer_small: |
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Marshal.load(smallint_dump)
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marshal_load_integer_over_32_bit: |
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Marshal.load(bigint32_dump)
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marshal_load_integer_over_64_bit: |
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Marshal.load(bigint64_dump)
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loop_count: 4000
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