133 lines
2.1 KiB
ArmAsm
133 lines
2.1 KiB
ArmAsm
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// Code generated by command: go run valid_asm.go -pkg ascii -out ../ascii/valid_amd64.s -stubs ../ascii/valid_amd64.go. DO NOT EDIT.
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//go:build !purego
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// +build !purego
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#include "textflag.h"
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// func ValidString(s string) bool
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// Requires: AVX, AVX2, SSE4.1
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TEXT ·ValidString(SB), NOSPLIT, $0-17
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MOVQ s_base+0(FP), AX
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MOVQ s_len+8(FP), CX
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MOVQ $0x8080808080808080, DX
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CMPQ CX, $0x10
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JB cmp8
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BTL $0x08, github·com∕segmentio∕asm∕cpu·X86+0(SB)
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JCS init_avx
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cmp8:
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CMPQ CX, $0x08
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JB cmp4
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TESTQ DX, (AX)
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JNZ invalid
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ADDQ $0x08, AX
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SUBQ $0x08, CX
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JMP cmp8
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cmp4:
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CMPQ CX, $0x04
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JB cmp3
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TESTL $0x80808080, (AX)
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JNZ invalid
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ADDQ $0x04, AX
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SUBQ $0x04, CX
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cmp3:
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CMPQ CX, $0x03
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JB cmp2
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MOVWLZX (AX), CX
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MOVBLZX 2(AX), AX
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SHLL $0x10, AX
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ORL CX, AX
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TESTL $0x80808080, AX
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JMP done
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cmp2:
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CMPQ CX, $0x02
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JB cmp1
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TESTW $0x8080, (AX)
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JMP done
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cmp1:
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CMPQ CX, $0x00
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JE done
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TESTB $0x80, (AX)
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done:
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SETEQ ret+16(FP)
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RET
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invalid:
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MOVB $0x00, ret+16(FP)
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RET
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init_avx:
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PINSRQ $0x00, DX, X4
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VPBROADCASTQ X4, Y4
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cmp256:
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CMPQ CX, $0x00000100
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JB cmp128
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VMOVDQU (AX), Y0
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VPOR 32(AX), Y0, Y0
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VMOVDQU 64(AX), Y1
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VPOR 96(AX), Y1, Y1
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VMOVDQU 128(AX), Y2
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VPOR 160(AX), Y2, Y2
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VMOVDQU 192(AX), Y3
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VPOR 224(AX), Y3, Y3
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VPOR Y1, Y0, Y0
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VPOR Y3, Y2, Y2
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VPOR Y2, Y0, Y0
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VPTEST Y0, Y4
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JNZ invalid
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ADDQ $0x00000100, AX
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SUBQ $0x00000100, CX
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JMP cmp256
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cmp128:
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CMPQ CX, $0x80
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JB cmp64
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VMOVDQU (AX), Y0
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VPOR 32(AX), Y0, Y0
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VMOVDQU 64(AX), Y1
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VPOR 96(AX), Y1, Y1
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VPOR Y1, Y0, Y0
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VPTEST Y0, Y4
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JNZ invalid
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ADDQ $0x80, AX
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SUBQ $0x80, CX
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cmp64:
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CMPQ CX, $0x40
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JB cmp32
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VMOVDQU (AX), Y0
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VPOR 32(AX), Y0, Y0
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VPTEST Y0, Y4
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JNZ invalid
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ADDQ $0x40, AX
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SUBQ $0x40, CX
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cmp32:
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CMPQ CX, $0x20
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JB cmp16
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VPTEST (AX), Y4
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JNZ invalid
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ADDQ $0x20, AX
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SUBQ $0x20, CX
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cmp16:
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CMPQ CX, $0x10
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JLE cmp_tail
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VPTEST (AX), X4
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JNZ invalid
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ADDQ $0x10, AX
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SUBQ $0x10, CX
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cmp_tail:
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SUBQ $0x10, CX
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ADDQ CX, AX
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VPTEST (AX), X4
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JMP done
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