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src/cmd/compile/internal/ssa/_gen/ARM64.rules
&& s > 64 && s <= 16*64 && s%16 == 0 && !config.noDuffDevice && logLargeCopy(v, s) => (DUFFCOPY [8 * (64 - s/16)] dst src mem) // 8 is the number of bytes to encode: // // LDP.P 16(R16), (R26, R27) // STP.P (R26, R27), 16(R17) // // 64 is number of these blocks. See runtime/duff_arm64.s:duffcopy // large move uses a loop (Move [s] dst src mem) && s%16 == 0 && (s > 16*64 || config.noDuffDevice)
Registered: Wed Jun 12 16:32:35 UTC 2024 - Last Modified: Thu May 23 15:49:20 UTC 2024 - 113.1K bytes - Viewed (0)