93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
#include "common.h"
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//These are auto-tuning codes on Loongson-3A platform.
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//#define prefetch(x) __builtin_prefetch(x)
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//#define prefetch(x) do {_mm_prefetch((char *)(x), _MM_HINT_T0);} while(0)
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#define prefetch(x) __asm__ __volatile__("ld $0, %0"::"m"(x))
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#define spec_loop_alpha1 do {Y[k] += A[LDA * j + i] * X[i]; i++;} while(0)
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#define spec_loop do {Y[k] += ALPHA * A[LDA * j + i] * X[i]; i++;} while(0)
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#define norm_loop_alpha1 do {Y[k] += A[LDA * j + i] * X[h]; i++; h += INCX;} while(0)
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#define norm_loop do {Y[k] += ALPHA * A[LDA * j + i] * X[h]; i++; h += INCX;} while(0)
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int CNAME(BLASLONG M, BLASLONG N, BLASLONG UNUSED, FLOAT ALPHA, FLOAT *A, BLASLONG LDA, FLOAT *X, BLASLONG INCX, FLOAT *Y, BLASLONG INCY, FLOAT *BUFFER) {
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if(!ALPHA)
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return 0;
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// if(INCX < 0)
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// INCX = -INCX;
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// if(INCY < 0)
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// INCY = -INCY;
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BLASLONG fahead = 30;
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BLASLONG spec_unroll = 3;
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BLASLONG tMQ = M - M % spec_unroll;
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BLASLONG j = 0, k = 0;
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if(ALPHA == 1) {
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if(INCX == 1) {
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for(; likely(j < N); j++, k += INCY) {
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BLASLONG i = 0;
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for(; likely(i < tMQ);) {
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prefetch(A[LDA * j + i + fahead]);
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prefetch(X[i + fahead]);
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/*loop_mark*/ spec_loop_alpha1;
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/*loop_mark*/ spec_loop_alpha1;
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/*loop_mark*/ spec_loop_alpha1;
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}
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for(; likely(i < M);) {
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spec_loop_alpha1;
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}
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}
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} else {
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for(; likely(j < N); j++, k += INCY) {
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BLASLONG i = 0, h = 0;
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for(; likely(i < tMQ);) {
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prefetch(A[LDA * j + i + fahead]);
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prefetch(X[h + fahead]);
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/*loop_mark*/ norm_loop_alpha1;
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/*loop_mark*/ norm_loop_alpha1;
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/*loop_mark*/ norm_loop_alpha1;
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}
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for(; likely(i < M);) {
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norm_loop_alpha1;
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}
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}
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}
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} else {
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if(INCX == 1) {
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for(; likely(j < N); j++, k += INCY) {
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BLASLONG i = 0;
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for(; likely(i < tMQ);) {
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prefetch(A[LDA * j + i + fahead]);
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prefetch(X[i + fahead]);
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/*loop_mark*/ spec_loop;
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/*loop_mark*/ spec_loop;
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/*loop_mark*/ spec_loop;
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}
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for(; likely(i < M);) {
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spec_loop;
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}
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}
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} else {
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for(; likely(j < N); j++, k += INCY) {
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BLASLONG i = 0, h = 0;
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for(; likely(i < tMQ);) {
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prefetch(A[LDA * j + i + fahead]);
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prefetch(X[h + fahead]);
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/*loop_mark*/ norm_loop;
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/*loop_mark*/ norm_loop;
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/*loop_mark*/ norm_loop;
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}
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for(; likely(i < M);) {
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norm_loop;
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}
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}
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}
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}
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return 0;
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}
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