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memclr_loong64.s
// Copyright 2022 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. #include "go_asm.h" #include "textflag.h" // func memclrNoHeapPointers(ptr unsafe.Pointer, n uintptr) TEXT runtime·memclrNoHeapPointers<ABIInternal>(SB),NOSPLIT,$0-16 #ifndef GOEXPERIMENT_regabiargs MOVV ptr+0(FP), R4 MOVV n+8(FP), R5 #endif ADDV R4, R5, R6 // if less than 8 bytes, do one byte at a time SGTU $8, R5, R8 BNE R8, out // do one byte at a time until 8-aligned AND $7, R4, R8 BEQ R8, words MOVB R0, (R4) ADDV $1, R4 JMP -4(PC) words: // do 8 bytes at a time if there is room ADDV $-7, R6, R5 PCALIGN $16 SGTU R5, R4, R8 BEQ R8, out MOVV R0, (R4) ADDV $8, R4 JMP -4(PC) out: BEQ R4, R6, done MOVB R0, (R4) ADDV $1, R4 JMP -3(PC) done: RET
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