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yanchengyinshiyou
yancheng
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yinshiyou
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loongarch64: Add optimization for max.
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‎kernel/loongarch64/KERNEL.LOONGSON2K1000

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Original file line numberDiff line numberDiff line change
@@ -13,4 +13,7 @@ DAMAXKERNEL = damax_lsx.S
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SAMINKERNEL = samin_lsx.S
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DAMINKERNEL = damin_lsx.S
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SMAXKERNEL = smax_lsx.S
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DMAXKERNEL = dmax_lsx.S
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endif

‎kernel/loongarch64/KERNEL.LOONGSON3R5

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@@ -13,6 +13,9 @@ DAMAXKERNEL = damax_lasx.S
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SAMINKERNEL = samin_lasx.S
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DAMINKERNEL = damin_lasx.S
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SMAXKERNEL = smax_lasx.S
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DMAXKERNEL = dmax_lasx.S
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DGEMMKERNEL = dgemm_kernel_16x4.S
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DGEMMINCOPY = dgemm_ncopy_16.S
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DGEMMITCOPY = dgemm_tcopy_16.S

‎kernel/loongarch64/dmax_lasx.S

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@@ -0,0 +1,175 @@
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#define ASSEMBLER
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#include "common.h"
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#define N $r4
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#define X $r5
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#define INCX $r6
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#define I $r12
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#define J $r13
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#define t1 $r14
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#define t2 $r18
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#define t3 $r15
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#define t4 $r17
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#define TEMP $r16
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#define m0 $xr8
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#define x1 $xr9
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#define x2 $xr10
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#define x3 $xr11
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#define x4 $xr12
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#define VX0 $xr20
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#define VX1 $xr21
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#define VM0 $xr22
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#define VM1 $xr23
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#define VM2 $xr19
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PROLOGUE
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bge $r0, N, .L999
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bge $r0, INCX, .L999
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li.d TEMP, 1
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slli.d TEMP, TEMP, BASE_SHIFT
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slli.d INCX, INCX, BASE_SHIFT
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bne INCX, TEMP, .L20
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xvld VM0, X, 0
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srai.d I, N, 3
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bge $r0, I, .L12
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.align 3
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.L10:
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xvld VX0, X, 0 * SIZE
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xvld VX1, X, 4 * SIZE
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addi.d I, I, -1
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xvfmax.d VM1, VX1, VX0
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addi.d X, X, 8 * SIZE
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xvfmax.d VM0, VM0, VM1
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blt $r0, I, .L10
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.align 3
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.L11:
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xvpickve.d x1, VM0, 0
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xvpickve.d x2, VM0, 1
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xvpickve.d x3, VM0, 2
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xvpickve.d x4, VM0, 3
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xvfmax.d VM1, x1, x2
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xvfmax.d VM2, x3, x4
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xvfmax.d VM0, VM1, VM2
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.align 3
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.L12: //INCX==1 and N<8
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andi I, N, 7
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li.d J, 4
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bge J, I, .L13 // 4<N<8
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xvld VX0, X, 0
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slli.d J, J, 1 // 8
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sub.d I, J, I
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slli.d I, I, BASE_SHIFT
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xvldx VX1, X, I
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xvfmax.d m0, VX0, VX1 //patial repeat read
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xvpickve.d x1, m0, 0
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xvpickve.d x2, m0, 1
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xvpickve.d x3, m0, 2
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xvpickve.d x4, m0, 3
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xvfmax.d VM1, x1, x2
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xvfmax.d m0, x3, x4
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xvfmax.d m0, m0, VM1
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xvfmax.d VM0, m0, VM0
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fmov.d $f0, $f22
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jirl $r0, $r1, 0x0
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.align 3
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.L13: //INCX==1 and 0<=N<=4
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bge $r0, I, .L15
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.align 3
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.L14:
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xvld x1, X, 0
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addi.d I, I, -1
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xvfmax.d VM0, VM0, x1
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addi.d X, X, SIZE
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blt $r0, I, .L14
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.align 3
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.L15:
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fmov.d $f0, $f22
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jirl $r0, $r1, 0x0
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.align 3
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.L20: // INCX!=1
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move TEMP, X // initialize the max value
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ld.d t1, TEMP, 0 * SIZE
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add.d TEMP, TEMP, INCX
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xvinsgr2vr.d VM0, t1, 0
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srai.d I, N, 3
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bge $r0, I, .L23
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ld.d t2, TEMP, 0 * SIZE
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add.d TEMP, TEMP, INCX
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ld.d t3, TEMP, 0 * SIZE
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add.d TEMP, TEMP, INCX
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ld.d t4, TEMP, 0 * SIZE
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add.d TEMP, TEMP, INCX
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xvinsgr2vr.d VM0, t2, 1
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xvinsgr2vr.d VM0, t3, 2
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xvinsgr2vr.d VM0, t4, 3
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.align 3
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.L21:
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ld.d t1, X, 0 * SIZE
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add.d X, X, INCX
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ld.d t2, X, 0 * SIZE
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add.d X, X, INCX
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ld.d t3, X, 0 * SIZE
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add.d X, X, INCX
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ld.d t4, X, 0 * SIZE
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add.d X, X, INCX
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xvinsgr2vr.d VX0, t1, 0
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xvinsgr2vr.d VX0, t2, 1
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xvinsgr2vr.d VX0, t3, 2
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xvinsgr2vr.d VX0, t4, 3
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ld.d t1, X, 0 * SIZE
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add.d X, X, INCX
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ld.d t2, X, 0 * SIZE
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add.d X, X, INCX
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ld.d t3, X, 0 * SIZE
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add.d X, X, INCX
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ld.d t4, X, 0 * SIZE
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add.d X, X, INCX
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xvinsgr2vr.d VX1, t1, 0
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xvinsgr2vr.d VX1, t2, 1
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xvinsgr2vr.d VX1, t3, 2
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xvinsgr2vr.d VX1, t4, 3
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addi.d I, I, -1
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xvfmax.d VM1, VX1, VX0
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xvfmax.d VM0, VM1, VM0
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blt $r0, I, .L21
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.align 3
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.L22:
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xvpickve.d x1, VM0, 0
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xvpickve.d x2, VM0, 1
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xvpickve.d x3, VM0, 2
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xvpickve.d x4, VM0, 3
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xvfmax.d VM1, x1, x2
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xvfmax.d VM2, x3, x4
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xvfmax.d VM0, VM1, VM2
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.align 3
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.L23: //INCX!=1 and N<8
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andi I, N, 7
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bge $r0, I, .L999
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.align 3
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.L24:
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xvld x1, X, 0
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addi.d I, I, -1
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xvfmax.d VM0, VM0, x1
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add.d X, X, INCX
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blt $r0, I, .L24
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.align 3
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.L999:
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fmov.d $f0, $f22
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jirl $r0, $r1, 0x0
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.align 3
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EPILOGUE

‎kernel/loongarch64/dmax_lsx.S

Lines changed: 141 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,141 @@
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#define ASSEMBLER
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#include "common.h"
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#define N $r4
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#define X $r5
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#define INCX $r6
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#define I $r12
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#define t1 $r14
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#define t2 $r18
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#define t3 $r15
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#define t4 $r17
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#define TEMP $r16
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#define x1 $vr9
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#define x2 $vr10
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#define VX0 $vr20
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#define VX1 $vr21
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#define VM0 $vr22
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#define VM1 $vr23
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#define VM2 $vr19
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#define VM3 $vr18
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PROLOGUE
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bge $r0, N, .L999
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bge $r0, INCX, .L999
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li.d TEMP, 1
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slli.d TEMP, TEMP, BASE_SHIFT
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slli.d INCX, INCX, BASE_SHIFT
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bne INCX, TEMP, .L20
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vld VM0, X, 0
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srai.d I, N, 3
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bge $r0, I, .L12
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.align 3
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.L10:
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vld VX0, X, 0 * SIZE
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vld VX1, X, 2 * SIZE
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addi.d I, I, -1
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vfmax.d VM1, VX1, VX0
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vld VX0, X, 4 * SIZE
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vld VX1, X, 6 * SIZE
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vfmax.d VM2, VX1, VX0
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vfmax.d VM3, VM1, VM2
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addi.d X, X, 8 * SIZE
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vfmax.d VM0, VM0, VM3
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blt $r0, I, .L10
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.align 3
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.L11:
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vreplvei.d x2, VM0, 1
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vfmax.d VM0, VM0, x2
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.align 3
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.L12: //INCX==1 and N<8
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andi I, N, 7
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bge $r0, I, .L14
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.align 3
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.L13:
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vld x1, X, 0
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addi.d I, I, -1
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vfmax.d VM0, VM0, x1
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addi.d X, X, SIZE
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blt $r0, I, .L13
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.align 3
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.L14:
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fmov.d $f0, $f22
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jirl $r0, $r1, 0x0
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.align 3
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.L20: // INCX!=1
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move TEMP, X // initialize the max value
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ld.d t1, TEMP, 0 * SIZE
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add.d TEMP, TEMP, INCX
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vinsgr2vr.d VM0, t1, 0
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srai.d I, N, 3
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bge $r0, I, .L23
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ld.d t2, TEMP, 0 * SIZE
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add.d TEMP, TEMP, INCX
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vinsgr2vr.d VM0, t2, 1
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.align 3
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.L21:
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ld.d t1, X, 0 * SIZE
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add.d X, X, INCX
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ld.d t2, X, 0 * SIZE
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add.d X, X, INCX
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vinsgr2vr.d VX0, t1, 0
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vinsgr2vr.d VX0, t2, 1
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ld.d t3, X, 0 * SIZE
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add.d X, X, INCX
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ld.d t4, X, 0 * SIZE
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add.d X, X, INCX
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vinsgr2vr.d VX1, t3, 0
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vinsgr2vr.d VX1, t4, 1
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vfmax.d VM1, VX0, VX1
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ld.d t1, X, 0 * SIZE
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add.d X, X, INCX
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ld.d t2, X, 0 * SIZE
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add.d X, X, INCX
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vinsgr2vr.d VX0, t1, 0
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vinsgr2vr.d VX0, t2, 1
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ld.d t3, X, 0 * SIZE
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add.d X, X, INCX
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ld.d t4, X, 0 * SIZE
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add.d X, X, INCX
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vinsgr2vr.d VX1, t3, 0
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vinsgr2vr.d VX1, t4, 1
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addi.d I, I, -1
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vfmax.d VM2, VX0, VX1
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vfmax.d VM3, VM1, VM2
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vfmax.d VM0, VM0, VM3
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blt $r0, I, .L21
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.align 3
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.L22:
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vreplvei.d x2, VM0, 1
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vfmax.d VM0, VM0, x2
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.align 3
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.L23: //INCX!=1 and N<8
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andi I, N, 7
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bge $r0, I, .L999
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.align 3
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.L24:
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vld x1, X, 0
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addi.d I, I, -1
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vfmax.d VM0, VM0, x1
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add.d X, X, INCX
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blt $r0, I, .L24
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.align 3
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.L999:
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fmov.d $f0, $f22
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jirl $r0, $r1, 0x0
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.align 3
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EPILOGUE

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