+++ /dev/null
-// Copyright ©2016 The Gonum Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//+build !noasm,!appengine
-
-#include "textflag.h"
-
-#define MOVSHDUP_X3_X2 LONG $0xD3160FF3 // MOVSHDUP X3, X2
-#define MOVSHDUP_X5_X4 LONG $0xE5160FF3 // MOVSHDUP X5, X4
-#define MOVSHDUP_X7_X6 LONG $0xF7160FF3 // MOVSHDUP X7, X6
-#define MOVSHDUP_X9_X8 LONG $0x160F45F3; BYTE $0xC1 // MOVSHDUP X9, X8
-
-#define MOVSLDUP_X3_X3 LONG $0xDB120FF3 // MOVSLDUP X3, X3
-#define MOVSLDUP_X5_X5 LONG $0xED120FF3 // MOVSLDUP X5, X5
-#define MOVSLDUP_X7_X7 LONG $0xFF120FF3 // MOVSLDUP X7, X7
-#define MOVSLDUP_X9_X9 LONG $0x120F45F3; BYTE $0xC9 // MOVSLDUP X9, X9
-
-#define ADDSUBPS_X2_X3 LONG $0xDAD00FF2 // ADDSUBPS X2, X3
-#define ADDSUBPS_X4_X5 LONG $0xECD00FF2 // ADDSUBPS X4, X5
-#define ADDSUBPS_X6_X7 LONG $0xFED00FF2 // ADDSUBPS X6, X7
-#define ADDSUBPS_X8_X9 LONG $0xD00F45F2; BYTE $0xC8 // ADDSUBPS X8, X9
-
-#define X_PTR SI
-#define Y_PTR DI
-#define LEN CX
-#define TAIL BX
-#define SUM X0
-#define P_SUM X1
-#define INC_X R8
-#define INCx3_X R9
-#define INC_Y R10
-#define INCx3_Y R11
-#define NEG1 X15
-#define P_NEG1 X14
-
-// func DotcInc(x, y []complex64, n, incX, incY, ix, iy uintptr) (sum complex64)
-TEXT ·DotcInc(SB), NOSPLIT, $0
- MOVQ x_base+0(FP), X_PTR // X_PTR = &x
- MOVQ y_base+24(FP), Y_PTR // Y_PTR = &y
- PXOR SUM, SUM // SUM = 0
- PXOR P_SUM, P_SUM // P_SUM = 0
- MOVQ n+48(FP), LEN // LEN = n
- CMPQ LEN, $0 // if LEN == 0 { return }
- JE dotc_end
- MOVQ ix+72(FP), INC_X
- MOVQ iy+80(FP), INC_Y
- LEAQ (X_PTR)(INC_X*8), X_PTR // X_PTR = &(X_PTR[ix])
- LEAQ (Y_PTR)(INC_Y*8), Y_PTR // Y_PTR = &(Y_PTR[iy])
- MOVQ incX+56(FP), INC_X // INC_X = incX * sizeof(complex64)
- SHLQ $3, INC_X
- MOVQ incY+64(FP), INC_Y // INC_Y = incY * sizeof(complex64)
- SHLQ $3, INC_Y
- MOVSS $(-1.0), NEG1
- SHUFPS $0, NEG1, NEG1 // { -1, -1, -1, -1 }
-
- MOVQ LEN, TAIL
- ANDQ $3, TAIL // TAIL = LEN % 4
- SHRQ $2, LEN // LEN = floor( LEN / 4 )
- JZ dotc_tail // if LEN == 0 { goto dotc_tail }
-
- MOVUPS NEG1, P_NEG1 // Copy NEG1 for pipelining
- LEAQ (INC_X)(INC_X*2), INCx3_X // INCx3_X = INC_X * 3
- LEAQ (INC_Y)(INC_Y*2), INCx3_Y // INCx3_Y = INC_Y * 3
-
-dotc_loop: // do {
- MOVSD (X_PTR), X3 // X_i = { imag(x[i]), real(x[i]) }
- MOVSD (X_PTR)(INC_X*1), X5
- MOVSD (X_PTR)(INC_X*2), X7
- MOVSD (X_PTR)(INCx3_X*1), X9
-
- // X_(i-1) = { imag(x[i]), imag(x[i]) }
- MOVSHDUP_X3_X2
- MOVSHDUP_X5_X4
- MOVSHDUP_X7_X6
- MOVSHDUP_X9_X8
-
- // X_i = { real(x[i]), real(x[i]) }
- MOVSLDUP_X3_X3
- MOVSLDUP_X5_X5
- MOVSLDUP_X7_X7
- MOVSLDUP_X9_X9
-
- // X_(i-1) = { -imag(x[i]), -imag(x[i]) }
- MULPS NEG1, X2
- MULPS P_NEG1, X4
- MULPS NEG1, X6
- MULPS P_NEG1, X8
-
- // X_j = { imag(y[i]), real(y[i]) }
- MOVSD (Y_PTR), X10
- MOVSD (Y_PTR)(INC_Y*1), X11
- MOVSD (Y_PTR)(INC_Y*2), X12
- MOVSD (Y_PTR)(INCx3_Y*1), X13
-
- // X_i = { imag(y[i]) * real(x[i]), real(y[i]) * real(x[i]) }
- MULPS X10, X3
- MULPS X11, X5
- MULPS X12, X7
- MULPS X13, X9
-
- // X_j = { real(y[i]), imag(y[i]) }
- SHUFPS $0xB1, X10, X10
- SHUFPS $0xB1, X11, X11
- SHUFPS $0xB1, X12, X12
- SHUFPS $0xB1, X13, X13
-
- // X_(i-1) = { real(y[i]) * imag(x[i]), imag(y[i]) * imag(x[i]) }
- MULPS X10, X2
- MULPS X11, X4
- MULPS X12, X6
- MULPS X13, X8
-
- // X_i = {
- // imag(result[i]): imag(y[i]) * real(x[i]) + real(y[i]) * imag(x[i]),
- // real(result[i]): real(y[i]) * real(x[i]) - imag(y[i]) * imag(x[i]) }
- ADDSUBPS_X2_X3
- ADDSUBPS_X4_X5
- ADDSUBPS_X6_X7
- ADDSUBPS_X8_X9
-
- // SUM += X_i
- ADDPS X3, SUM
- ADDPS X5, P_SUM
- ADDPS X7, SUM
- ADDPS X9, P_SUM
-
- LEAQ (X_PTR)(INC_X*4), X_PTR // X_PTR = &(X_PTR[INC_X*4])
- LEAQ (Y_PTR)(INC_Y*4), Y_PTR // Y_PTR = &(Y_PTR[INC_Y*4])
-
- DECQ LEN
- JNZ dotc_loop // } while --LEN > 0
-
- ADDPS P_SUM, SUM // SUM = { P_SUM + SUM }
- CMPQ TAIL, $0 // if TAIL == 0 { return }
- JE dotc_end
-
-dotc_tail: // do {
- MOVSD (X_PTR), X3 // X_i = { imag(x[i]), real(x[i]) }
- MOVSHDUP_X3_X2 // X_(i-1) = { imag(x[i]), imag(x[i]) }
- MOVSLDUP_X3_X3 // X_i = { real(x[i]), real(x[i]) }
- MULPS NEG1, X2 // X_(i-1) = { -imag(x[i]), imag(x[i]) }
- MOVUPS (Y_PTR), X10 // X_j = { imag(y[i]), real(y[i]) }
- MULPS X10, X3 // X_i = { imag(y[i]) * real(x[i]), real(y[i]) * real(x[i]) }
- SHUFPS $0x1, X10, X10 // X_j = { real(y[i]), imag(y[i]) }
- MULPS X10, X2 // X_(i-1) = { real(y[i]) * imag(x[i]), imag(y[i]) * imag(x[i]) }
-
- // X_i = {
- // imag(result[i]): imag(y[i])*real(x[i]) + real(y[i])*imag(x[i]),
- // real(result[i]): real(y[i])*real(x[i]) - imag(y[i])*imag(x[i]) }
- ADDSUBPS_X2_X3
- ADDPS X3, SUM // SUM += X_i
- ADDQ INC_X, X_PTR // X_PTR += INC_X
- ADDQ INC_Y, Y_PTR // Y_PTR += INC_Y
- DECQ TAIL
- JNZ dotc_tail // } while --TAIL > 0
-
-dotc_end:
- MOVSD SUM, sum+88(FP) // return SUM
- RET
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