http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18438
Steven Bosscher <steven at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2006-09-19 07:10:15 |2011-05-22 17:40:15
--- Comment #6 from Steven Bosscher <steven at gcc dot gnu.org> 2011-05-22
15:40:28 UTC ---
Still not vectorized in recent GCC
t.c:20: note: not vectorized: complicated access pattern.
t.c:22: note: not vectorized: complicated access pattern.
1 typedef unsigned int bool;
2 #define true 1
3
4 #define NUMPOINTS 50000
5
6 #define align(x) __attribute__((align(x)))
7
8 typedef float align(16) MATRIX[3][3];
9
10 static float points[NUMPOINTS][4];
11 static align(16) float opoints[NUMPOINTS][4];
12 static bool flags[NUMPOINTS];
13 static MATRIX gmatrix;
14
15
16 void RotateVectors (void)
17 {
18 int i, r;
19
20 for (r = 0; r < 4; r++)
21 {
22 for (i = 0; i < NUMPOINTS; i++)
23 {
24 opoints[i][0] = gmatrix[0][0] * points[i][0]
25 + gmatrix[0][1] * points[i][1]
26 + gmatrix[0][2] * points[i][2];
27 opoints[i][1] = gmatrix[1][0] * points[i][0]
28 + gmatrix[1][1] * points[i][1]
29 + gmatrix[1][2] * points[i][2];
30 opoints[i][2] = gmatrix[2][0] * points[i][0]
31 + gmatrix[2][1] * points[i][1]
32 + gmatrix[2][2] * points[i][2];
33 flags[i] = true;
34 }
35 }
36 }
37
"GCC: (GNU) 4.6.0 20110312 (experimental) [trunk revision 170907]"
