diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/tree-cfg.c | 6 | ||||
| -rw-r--r-- | gcc/tree-flow.h | 1 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 6 |
4 files changed, 19 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ff5e2022c72..31163ac68ac 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2005-10-09 Zdenek Dvorak <dvorakz@suse.cz> + + PR tree-optimization/24226 + * tree-cfg.c (remove_bb): Clean up unreachable loops. + * tree-flow.h (free_numbers_of_iterations_estimates_loop): Declare. + * tree-ssa-loop-niter.c (free_numbers_of_iterations_estimates_loop): + Export. + 2005-10-09 Eric Botcazou <ebotcazou@libertysurf.fr> * config/sparc/gmon-sol2.c (internal_mcount): Mark as used. diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c index 74e6063c0ab..2a0d75a2970 100644 --- a/gcc/tree-cfg.c +++ b/gcc/tree-cfg.c @@ -2020,6 +2020,12 @@ remove_bb (basic_block bb) { loop->latch = NULL; loop->header = NULL; + + /* Also clean up the information associated with the loop. Updating + it would waste time. More importantly, it may refer to ssa + names that were defined in other removed basic block -- these + ssa names are now removed and invalid. */ + free_numbers_of_iterations_estimates_loop (loop); } } diff --git a/gcc/tree-flow.h b/gcc/tree-flow.h index f00f09ebba9..135c475f62b 100644 --- a/gcc/tree-flow.h +++ b/gcc/tree-flow.h @@ -735,6 +735,7 @@ bool scev_probably_wraps_p (tree, tree, tree, tree, struct loop *, bool *, bool *); tree convert_step (struct loop *, tree, tree, tree, tree); void free_numbers_of_iterations_estimates (struct loops *); +void free_numbers_of_iterations_estimates_loop (struct loop *); void rewrite_into_loop_closed_ssa (bitmap, unsigned); void verify_loop_closed_ssa (void); void loop_commit_inserts (void); diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index 6d8b5086de5..5e35f4efb83 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -2007,11 +2007,13 @@ convert_step (struct loop *loop, tree new_type, tree base, tree step, /* Frees the information on upper bounds on numbers of iterations of LOOP. */ -static void +void free_numbers_of_iterations_estimates_loop (struct loop *loop) { struct nb_iter_bound *bound, *next; - + + loop->nb_iterations = NULL; + loop->estimated_nb_iterations = NULL; for (bound = loop->bounds; bound; bound = next) { next = bound->next; |