diff options
Diffstat (limited to 'gcc/tree-ssa-loop-niter.c')
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index 18fd6b2..48016c0 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -2254,6 +2254,12 @@ find_loop_niter_by_eval (struct loop *loop, edge *exit) tree niter = NULL_TREE, aniter; *exit = NULL; + + /* Loops with multiple exits are expensive to handle and less important. */ + if (!flag_expensive_optimizations + && VEC_length (edge, exits) > 1) + return chrec_dont_know; + for (i = 0; VEC_iterate (edge, exits, i, ex); i++) { if (!just_once_each_iteration_p (loop, ex->src)) |