| /* Verify the strength reduction adjustment for -ftrivial-auto-var-init. */ |
| /* { dg-do compile } */ |
| /* { dg-options "-O2 -ftrivial-auto-var-init=zero -fdump-tree-gimple -fdump-tree-esra" } */ |
| |
| |
| typedef double VECTOR[3]; |
| |
| enum |
| { |
| X = 0, |
| Y = 1, |
| Z = 2, |
| T = 3 |
| }; |
| |
| void Assign_Vector(VECTOR d, VECTOR s) |
| { |
| d[X] = s[X]; |
| d[Y] = s[Y]; |
| d[Z] = s[Z]; |
| } |
| |
| void VCross(VECTOR a, const VECTOR b, const VECTOR c) |
| { |
| VECTOR tmp; |
| |
| tmp[X] = b[Y] * c[Z] - b[Z] * c[Y]; |
| tmp[Y] = b[Z] * c[X] - b[X] * c[Z]; |
| tmp[Z] = b[X] * c[Y] - b[Y] * c[X]; |
| |
| Assign_Vector(a, tmp); |
| } |
| |
| /* { dg-final { scan-tree-dump-times "tmp = .DEFERRED_INIT \\(24, 2, 0\\)" 1 "gimple" } } */ |
| /* { dg-final { scan-tree-dump-times ".DEFERRED_INIT \\(8, 2, 0\\)" 3 "esra" } } */ |
