3153aa4c95
Software prefetching helps recover performance when hardware prefetching is disabled. The 'LIBC_COPT_MEMSET_X86_USE_SOFTWARE_PREFETCHING' compile time option allows users to use this patch.
31 lines
1022 B
JSON
31 lines
1022 B
JSON
{
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"printf": {
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"LIBC_CONF_PRINTF_DISABLE_FLOAT": {
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"value": false,
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"doc": "Disable printing floating point values in printf and friends."
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},
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"LIBC_CONF_PRINTF_DISABLE_INDEX_MODE": {
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"value": false,
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"doc": "Disable index mode in the printf format string."
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},
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"LIBC_CONF_PRINTF_DISABLE_WRITE_INT": {
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"value": false,
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"doc": "Disable handling of %n in printf format string."
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},
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"LIBC_CONF_PRINTF_FLOAT_TO_STR_USE_MEGA_LONG_DOUBLE_TABLE": {
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"value": true,
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"doc": "Use large table for better printf long double performance."
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}
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},
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"string": {
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"LIBC_CONF_STRING_UNSAFE_WIDE_READ": {
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"value": false,
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"doc": "Read more than a byte at a time to perform byte-string operations like strlen."
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},
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"LIBC_CONF_MEMSET_X86_USE_SOFTWARE_PREFETCHING": {
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"value": false,
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"doc": "Inserts prefetch for write instructions (PREFETCHW) for memset on x86 to recover performance when hardware prefetcher is disabled."
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}
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}
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}
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