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src/runtime/memclr_arm64.s
BNE tail63 RET try_zva: // Try using the ZVA feature to zero entire cache lines // It is not meaningful to use ZVA if the block size is less than 64, // so make sure that n is greater than or equal to 64 CMP $63, R1 BLE tail63 CMP $128, R1 // Ensure n is at least 128 bytes, so that there is enough to copy after // alignment. BLT no_zva // Check if ZVA is allowed from user code, and if so get the block size
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