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//+build !noasm !appengine
// (C2GOASM doesn't work correctly for Arm64)
// func _levels_to_bitmap_neon(levels unsafe.Pointer, numLevels int, rhs int16) (res uint64)
TEXT ยท_levels_to_bitmap_neon(SB), $0-32
MOVD levels+0(FP), R0
MOVD numLevels+8(FP), R1
MOVD rhs+16(FP), R2
// The Go ABI saves the frame pointer register one word below the
// caller's frame. Make room so we don't overwrite it. Needs to stay
// 16-byte aligned
SUB $16, RSP
WORD $0xa9bf7bfd // stp x29, x30, [sp, #-16]!
WORD $0x7100043f // cmp w1, #1
WORD $0x910003fd // mov x29, sp
BLT LBB1_3
WORD $0x71000c3f // cmp w1, #3
WORD $0x2a0103e9 // mov w9, w1
BHI LBB1_4
WORD $0xaa1f03ea // mov x10, xzr
WORD $0xaa1f03e8 // mov x8, xzr
JMP LBB1_7
LBB1_3:
WORD $0xaa1f03e8 // mov x8, xzr
JMP LBB1_8
LBB1_4:
VMOVQ $0x0000000000000000, $0x0000000000000001, V1 // adrp x11, .LCPI1_0; ldr q1, [x11, :lo12:.LCPI1_0]
WORD $0x5280004b // mov w11, #2
WORD $0x0e040c43 // dup v3.2s, w2
WORD $0x4e080d62 // dup v2.2d, x11
WORD $0x5280002b // mov w11, #1
WORD $0x927e752a // and x10, x9, #0xfffffffc
WORD $0x0f305464 // shl v4.2s, v3.2s, #16
WORD $0x4e080d63 // dup v3.2d, x11
WORD $0x5280008b // mov w11, #4
WORD $0x91001008 // add x8, x0, #4
WORD $0x6f00e400 // movi v0.2d, #0000000000000000
WORD $0x0f300484 // sshr v4.2s, v4.2s, #16
WORD $0x4e080d65 // dup v5.2d, x11
WORD $0xaa0a03eb // mov x11, x10
WORD $0x6f00e406 // movi v6.2d, #0000000000000000
LBB1_5:
WORD $0x78dfc10c // ldursh w12, [x8, #-4]
WORD $0x79c0010d // ldrsh w13, [x8]
WORD $0x78dfe10e // ldursh w14, [x8, #-2]
WORD $0x4ee28431 // add v17.2d, v1.2d, v2.2d
WORD $0x1e270187 // fmov s7, w12
WORD $0x79c0050c // ldrsh w12, [x8, #2]
WORD $0x1e2701b0 // fmov s16, w13
WORD $0x4e0c1dc7 // mov v7.s[1], w14
WORD $0x0ea434e7 // cmgt v7.2s, v7.2s, v4.2s
WORD $0x4e0c1d90 // mov v16.s[1], w12
WORD $0x0ea43610 // cmgt v16.2s, v16.2s, v4.2s
WORD $0x2f20a4e7 // ushll v7.2d, v7.2s, #0
WORD $0x2f20a610 // ushll v16.2d, v16.2s, #0
WORD $0x4e231ce7 // and v7.16b, v7.16b, v3.16b
WORD $0x4e231e10 // and v16.16b, v16.16b, v3.16b
WORD $0x6ee144e7 // ushl v7.2d, v7.2d, v1.2d
WORD $0x6ef14610 // ushl v16.2d, v16.2d, v17.2d
WORD $0xf100116b // subs x11, x11, #4
WORD $0x4ee58421 // add v1.2d, v1.2d, v5.2d
WORD $0x4ea01ce0 // orr v0.16b, v7.16b, v0.16b
WORD $0x4ea61e06 // orr v6.16b, v16.16b, v6.16b
WORD $0x91002108 // add x8, x8, #8
BNE LBB1_5
WORD $0x4ea01cc0 // orr v0.16b, v6.16b, v0.16b
WORD $0x4e180401 // dup v1.2d, v0.d[1]
WORD $0x4ea11c00 // orr v0.16b, v0.16b, v1.16b
WORD $0xeb09015f // cmp x10, x9
WORD $0x9e660008 // fmov x8, d0
BEQ LBB1_8
LBB1_7:
WORD $0x78ea780b // ldrsh w11, [x0, x10, lsl #1]
WORD $0x6b22a17f // cmp w11, w2, sxth
WORD $0x1a9fd7eb // cset w11, gt
WORD $0x9aca216b // lsl x11, x11, x10
WORD $0x9100054a // add x10, x10, #1
WORD $0xeb0a013f // cmp x9, x10
WORD $0xaa080168 // orr x8, x11, x8
BNE LBB1_7
LBB1_8:
WORD $0xa8c17bfd // ldp x29, x30, [sp], #16
// Put the stack pointer back where it was
ADD $16, RSP
MOVD R8, res+24(FP)
RET
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