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chore: import upstream snapshot with attribution
2026-07-13 12:31:17 +08:00

56 行
1.2 KiB
ArmAsm

// Code generated by command: go run ip.go -out ip_amd64.s -stubs ip_stub_amd64.go. DO NOT EDIT.
#include "textflag.h"
// func IP(x []float32, y []float32) float32
// Requires: AVX, FMA3, SSE
TEXT ·IP(SB), NOSPLIT, $0-52
MOVQ x_base+0(FP), AX
MOVQ y_base+24(FP), CX
MOVQ x_len+8(FP), DX
VXORPS Y0, Y0, Y0
VXORPS Y1, Y1, Y1
VXORPS Y2, Y2, Y2
VXORPS Y3, Y3, Y3
blockloop:
CMPQ DX, $0x00000020
JL tail
VMOVUPS (AX), Y4
VMOVUPS 32(AX), Y5
VMOVUPS 64(AX), Y6
VMOVUPS 96(AX), Y7
VFMADD231PS (CX), Y4, Y0
VFMADD231PS 32(CX), Y5, Y1
VFMADD231PS 64(CX), Y6, Y2
VFMADD231PS 96(CX), Y7, Y3
ADDQ $0x00000080, AX
ADDQ $0x00000080, CX
SUBQ $0x00000020, DX
JMP blockloop
tail:
VXORPS X4, X4, X4
tailloop:
CMPQ DX, $0x00000000
JE reduce
VMOVSS (AX), X5
VFMADD231SS (CX), X5, X4
ADDQ $0x00000004, AX
ADDQ $0x00000004, CX
DECQ DX
JMP tailloop
reduce:
VADDPS Y0, Y1, Y0
VADDPS Y2, Y3, Y2
VADDPS Y0, Y2, Y0
VEXTRACTF128 $0x01, Y0, X1
VADDPS X0, X1, X0
VADDPS X0, X4, X0
VHADDPS X0, X0, X0
VHADDPS X0, X0, X0
MOVSS X0, ret+48(FP)
RET