Viewing file:  pr61743-2.c (1.2 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* { dg-do compile } */
/* { dg-options "-O3 -funroll-loops -fno-tree-vectorize -fdump-tree-cunroll-details -fno-peel-loops" } */
#define N 8
#define M 14
typedef unsigned char e_u8;
e_u8 x[256];
#define MAX(a,b) ((a)>=(b)?(a):(b))
#define btype e_u8
static inline void bar1(e_u8 a[4][N], e_u8 b[4][N], btype n)
{
int i, j;
for(i = 0; i < 4; i++)
for(j = 0; j < n; j++)
a[i][j] ^= b[i][j];
}
static inline void bar2(e_u8 a[4][N], e_u8 b[256], btype n)
{
int i, j;
for(i = 0; i < 4; i++)
for(j = 0; j < n; j++)
a[i][j] = b[a[i][j]] ;
}
int foo1 (e_u8 a[4][N], int b1, int b2, e_u8 b[M+1][4][N])
{
btype n;
int r, m;
switch (b2) {
case 128: n = 4; break;
case 192: n = 6; break;
case 256: n = 8; break;
default : return (-2);
}
switch (MAX(b1,b2)) {
case 128: m = 10; break;
case 192: m = 12; break;
case 256: m = 14; break;
default : return (-3);
}
bar1(a,b[m],n);
bar2(a,x,n);
return 0;
}
/* { dg-final { scan-tree-dump-times "loop with 3 iterations completely unrolled" 2 "cunroll" } } */
/* { dg-final { scan-tree-dump-times "loop with 7 iterations completely unrolled" 2 "cunroll" } } */
|
