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/* { dg-do run } */
/* { dg-options "-O2 -mips3d" } */
/* Matrix Multiplications */
#include <stdlib.h>
#include <stdio.h>
typedef float v2sf __attribute__((vector_size(8)));
float a[4] = {1.1, 2.2, 3.3, 4.4};
float b[4][4] = {{1, 2, 3, 4},
{5, 6, 7, 8},
{9, 10, 11, 12},
{13, 14, 15, 16}};
float c[4]; /* Result for matrix_multiply1() */
float d[4]; /* Result for matrix_multiply2() */
float e[4]; /* Result for matrix_multiply3() */
float f[4]; /* Result for matrix_multiply4() */
void matrix_multiply1();
NOMIPS16 void matrix_multiply2();
NOMIPS16 void matrix_multiply3();
NOMIPS16 void matrix_multiply4();
int main ()
{
int i;
/* Version 1. Use float calculations */
matrix_multiply1();
/* Version 2. Use paired-single instructions inside the inner loop*/
matrix_multiply2();
for (i = 0; i < 4; i++)
if (d[i] != c[i])
abort();
/* Version 3. Use paired-single instructions and unroll the inner loop */
matrix_multiply3();
for (i = 0; i < 4; i++)
if (e[i] != c[i])
abort();
/* Version 4. Use paired-single instructions and unroll all loops */
matrix_multiply4();
for (i = 0; i < 4; i++)
if (f[i] != c[i])
abort();
printf ("Test Passes\n");
exit (0);
}
void matrix_multiply1()
{
int i, j;
for (i = 0; i < 4; i++)
{
c[i] = 0.0;
for (j = 0; j < 4; j ++)
c[i] += a[j] * b[j][i];
}
}
NOMIPS16 void matrix_multiply2()
{
int i, j;
v2sf m1, m2;
v2sf result, temp;
for (i = 0; i < 4; i++)
{
result = (v2sf) {0.0, 0.0};
for (j = 0; j < 4; j+=2)
{
/* Load two float values into m1 */
m1 = (v2sf) {a[j], a[j+1]};
m2 = (v2sf) {b[j][i], b[j+1][i]};
/* Multiply and add */
result += m1 * m2;
}
/* Reduction add at the end */
temp = __builtin_mips_addr_ps (result, result);
d[i] = __builtin_mips_cvt_s_pl (temp);
}
}
NOMIPS16 void matrix_multiply3()
{
int i;
v2sf m1, m2, n1, n2;
v2sf result, temp;
m1 = (v2sf) {a[0], a[1]};
m2 = (v2sf) {a[2], a[3]};
for (i = 0; i < 4; i++)
{
n1 = (v2sf) {b[0][i], b[1][i]};
n2 = (v2sf) {b[2][i], b[3][i]};
/* Multiply and add */
result = m1 * n1 + m2 * n2;
/* Reduction add at the end */
temp = __builtin_mips_addr_ps (result, result);
e[i] = __builtin_mips_cvt_s_pl (temp);
}
}
NOMIPS16 void matrix_multiply4()
{
v2sf m1, m2;
v2sf n1, n2, n3, n4, n5, n6, n7, n8;
v2sf temp1, temp2, temp3, temp4;
v2sf result1, result2;
/* Load a[0] a[1] values into m1
Load a[2] a[3] values into m2 */
m1 = (v2sf) {a[0], a[1]};
m2 = (v2sf) {a[2], a[3]};
/* Load b[0][0] b[1][0] values into n1
Load b[2][0] b[3][0] values into n2
Load b[0][1] b[1][1] values into n3
Load b[2][1] b[3][1] values into n4
Load b[0][2] b[1][2] values into n5
Load b[2][2] b[3][2] values into n6
Load b[0][3] b[1][3] values into n7
Load b[2][3] b[3][3] values into n8 */
n1 = (v2sf) {b[0][0], b[1][0]};
n2 = (v2sf) {b[2][0], b[3][0]};
n3 = (v2sf) {b[0][1], b[1][1]};
n4 = (v2sf) {b[2][1], b[3][1]};
n5 = (v2sf) {b[0][2], b[1][2]};
n6 = (v2sf) {b[2][2], b[3][2]};
n7 = (v2sf) {b[0][3], b[1][3]};
n8 = (v2sf) {b[2][3], b[3][3]};
temp1 = m1 * n1 + m2 * n2;
temp2 = m1 * n3 + m2 * n4;
temp3 = m1 * n5 + m2 * n6;
temp4 = m1 * n7 + m2 * n8;
result1 = __builtin_mips_addr_ps (temp1, temp2);
result2 = __builtin_mips_addr_ps (temp3, temp4);
f[0] = __builtin_mips_cvt_s_pu (result1);
f[1] = __builtin_mips_cvt_s_pl (result1);
f[2] = __builtin_mips_cvt_s_pu (result2);
f[3] = __builtin_mips_cvt_s_pl (result2);
}
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