| /* { dg-do compile } */ |
| /* { dg-options "-Ofast -msse2 -fdump-tree-vect-details -fdump-tree-forwprop4" } */ |
| |
| #ifndef INDEXTYPE |
| #define INDEXTYPE int |
| #endif |
| double vmul(INDEXTYPE *rowstart, INDEXTYPE *rowend, |
| double *luval, double *dst) |
| { |
| double res = 0; |
| for (const INDEXTYPE * col = rowstart; col != rowend; ++col, ++luval) |
| res += *luval * dst[*col]; |
| return res; |
| } |
| |
| /* With gather emulation this should be profitable to vectorize |
| even with plain SSE2. */ |
| /* { dg-final { scan-tree-dump "loop vectorized" "vect" } } */ |
| /* The index vector loads and promotions should be scalar after forwprop. */ |
| /* { dg-final { scan-tree-dump-not "vec_unpack" "forwprop4" } } */ |
