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VFPU-Int: Add a few fast-paths to ReadMatrix/WriteMatrix. Should gain back part of the speed lost in #12217

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(which fixed #5399).
This commit is contained in:
Henrik Rydgård 2019-08-06 14:53:11 +02:00
parent 9b30e5393d
commit 8642134419
1 changed files with 83 additions and 19 deletions
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102
Core/MIPS/MIPSVFPUUtils.cpp
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@ -17,7 +17,8 @@
#include <cstdint>
#include <limits>
#include <stdio.h>
#include <cstdio>
#include <cstring>
#include "Common/BitScan.h"
#include "Common/CommonFuncs.h"
@ -245,14 +246,44 @@ void ReadMatrix(float *rd, MatrixSize size, int reg) {
default: _assert_msg_(JIT, 0, "%s: Bad matrix size", __FUNCTION__);
}
for (int i = 0; i < side; i++) {
for (int j = 0; j < side; j++) {
int index = mtx * 4;
if (transpose)
index += ((row+i)&3) + ((col+j)&3)*32;
else
index += ((col+j)&3) + ((row+i)&3)*32;
rd[j*4 + i] = V(index);
// The voffset ordering is now integrated in these formulas,
// eliminating a table lookup.
const float *v = currentMIPS->v + (size_t)mtx * 16;
if (transpose) {
if (side == 4 && col == 0 && row == 0) {
// Simple 4x4 transpose. TODO: Optimize.
for (int j = 0; j < 4; j++) {
for (int i = 0; i < 4; i++) {
rd[j * 4 + i] = v[i * 4 + j];
}
}
} else {
for (int j = 0; j < side; j++) {
for (int i = 0; i < side; i++) {
int index = ((row + i) & 3) * 4 + ((col + j) & 3);
rd[j * 4 + i] = v[index];
}
}
}
} else {
// Fast path
if (side == 4 && col == 0 && row == 0) {
memcpy(rd, v, sizeof(float) * 16);
/*
for (int j = 0; j < side; j++) {
for (int i = 0; i < side; i++) {
int index = mtx * 16 + j * 4 + i;
rd[j * 4 + i] = v[index];
}
}
*/
} else {
for (int j = 0; j < side; j++) {
for (int i = 0; i < side; i++) {
int index = ((col + j) & 3) * 4 + ((row + i) & 3);
rd[j * 4 + i] = v[index];
}
}
}
}
}
@ -277,16 +308,49 @@ void WriteMatrix(const float *rd, MatrixSize size, int reg) {
ERROR_LOG_REPORT(CPU, "Write mask used with vfpu matrix instruction.");
}
for (int i = 0; i < side; i++) {
for (int j = 0; j < side; j++) {
// Hm, I wonder if this should affect matrices at all.
if (j != side -1 || !currentMIPS->VfpuWriteMask(i)) {
int index = mtx * 4;
if (transpose)
index += ((row+i)&3) + ((col+j)&3)*32;
else
index += ((col+j)&3) + ((row+i)&3)*32;
V(index) = rd[j*4+i];
// The voffset ordering is now integrated in these formulas,
// eliminating a table lookup.
float *v = currentMIPS->v + (size_t)mtx * 16;
if (transpose) {
// Fast path
if (side == 4 && row == 0 && col == 0 && currentMIPS->VfpuWriteMask() == 0x0) {
for (int j = 0; j < side; j++) {
for (int i = 0; i < side; i++) {
int index = i * 4 + j;
v[index] = rd[j * 4 + i];
}
}
} else {
for (int j = 0; j < side; j++) {
for (int i = 0; i < side; i++) {
// Hm, I wonder if this should affect matrices at all.
if (j != side - 1 || !currentMIPS->VfpuWriteMask(i)) {
int index = ((row + i) & 3) * 4 + ((col + j) & 3);
v[index] = rd[j * 4 + i];
}
}
}
}
} else {
if (side == 4 && row == 0 && col == 0 && currentMIPS->VfpuWriteMask() == 0x0) {
memcpy(v, rd, sizeof(float) * 16);
/*
for (int j = 0; j < side; j++) {
for (int i = 0; i < side; i++) {
int index = j * 4 + i;
v[index] = rd[j * 4 + i];
}
}
*/
} else {
for (int j = 0; j < side; j++) {
for (int i = 0; i < side; i++) {
// Hm, I wonder if this should affect matrices at all.
if (j != side - 1 || !currentMIPS->VfpuWriteMask(i)) {
int index = ((col + j) & 3) * 4 + ((row + i) & 3);
v[index] = rd[j * 4 + i];
}
}
}
}
}