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Jinliang Li
d5db7d1cee
Optimize crc32 standard(poly:0x04C11DB7) and crc32 castagnoli(poly:0x1EDC6F41) with arm crc32 extension instructions. For example, crc32 standard caculates(lookup crc32 table) 1812 bytes data, reduced the time from 118 us to 14 us through optimization. Performance improved ~700% Signed-off-by: Jinliang Li <lijinliang1@lixiang.com>
41 lines
880 B
Plaintext
41 lines
880 B
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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if ARCH_ARM7TDMI || ARCH_ARM920T || ARCH_ARM926EJS || \
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ARCH_ARM1136J || ARCH_ARM1156T2 || ARCH_ARM1176JZ
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source "libs/libc/machine/arm/arm/Kconfig"
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endif
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if ARCH_ARMV7A
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source "libs/libc/machine/arm/armv7-a/Kconfig"
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endif
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if ARCH_ARMV7R
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source "libs/libc/machine/arm/armv7-r/Kconfig"
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endif
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if ARCH_ARMV6M
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source "libs/libc/machine/arm/armv6-m/Kconfig"
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endif
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if ARCH_ARMV7M
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source "libs/libc/machine/arm/armv7-m/Kconfig"
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endif
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if ARCH_ARMV8M
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source "libs/libc/machine/arm/armv8-m/Kconfig"
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endif
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if ARCH_ARMV8R
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source "libs/libc/machine/arm/armv8-r/Kconfig"
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endif
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config LIBC_ARCH_CRC32
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bool "Enable optimized crc32 for ARM"
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default n
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depends on ARCH_HAVE_CRC32
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---help---
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Enable optimized arm neon specific crc32 library function
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