61 lines
831 B
ArmAsm
61 lines
831 B
ArmAsm
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// Code generated by command: go run asm2.go -out search_amd64.s -stubs stub_search_amd64.go. DO NOT EDIT.
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#include "textflag.h"
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// func Search(xs []uint64, k uint64) int16
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TEXT ·Search(SB), NOSPLIT, $0-34
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MOVQ xs_base+0(FP), AX
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MOVQ xs_len+8(FP), CX
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MOVQ k+24(FP), DX
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// Save n
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MOVQ CX, BX
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// Initialize idx register to zero.
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XORL BP, BP
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loop:
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// Unroll1
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CMPQ (AX)(BP*8), DX
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JAE Found
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// Unroll2
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CMPQ 16(AX)(BP*8), DX
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JAE Found2
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// Unroll3
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CMPQ 32(AX)(BP*8), DX
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JAE Found3
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// Unroll4
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CMPQ 48(AX)(BP*8), DX
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JAE Found4
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// plus8
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ADDQ $0x08, BP
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CMPQ BP, CX
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JB loop
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JMP NotFound
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Found2:
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ADDL $0x02, BP
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JMP Found
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Found3:
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ADDL $0x04, BP
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JMP Found
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Found4:
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ADDL $0x06, BP
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Found:
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MOVL BP, BX
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NotFound:
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MOVL BX, BP
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SHRL $0x1f, BP
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ADDL BX, BP
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SHRL $0x01, BP
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MOVL BP, ret+32(FP)
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RET
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