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| author | Michael Hayes <m.hayes@elec.canterbury.ac.nz> | 1999-11-30 10:42:29 +0000 |
|---|---|---|
| committer | Michael Hayes <m.hayes@gcc.gnu.org> | 1999-11-30 10:42:29 +0000 |
| commit | 4dc9341c04ba95ac73093573f645b49dcff494bf (patch) | |
| tree | 0419ba31de201d068da7e9c24838800282059223 /gcc/sbitmap.c | |
| parent | edecd81faa008b1d15af7c5ef1c1f9eeb9854635 (diff) | |
| download | gcc-4dc9341c04ba95ac73093573f645b49dcff494bf.tar.gz | |
flow.c (flow_nodes_print, [...]): New functions.
* flow.c (flow_nodes_print, flow_loops_cfg_dump): New functions.
(flow_loop_nested_p, flow_loops_dump, flow_loops_free): Likewise.
(flow_loop_exits_find, flow_loop_nodes_find): Likewise.
(flow_depth_first_order_compute, flow_loop_pre_header_find): Likewise.
(flow_loop_tree_node_add, flow_loops_tree_build): Likewise.
(flow_loop_level_compute, low_loops_level_compute): Likewise.
(flow_loops_find, flow_loop_outside_edge_p): Likewise.
* basic-block.h: Protect from multiple inclusion.
(flow_loops_find, flow_loops_free, flow_loop_dump): Add protoypes.
(struct loops, struct loop): Define structures.
* sbitmap.c (sbitmap_a_subset_b_p): New function.
* sbitmap.h: Protect from multiple inclusion.
(sbitmap_a_subset_b_p): Add prototype.
* Makefile.in (LOOP_H): New macro.
(stmt.o, integrate.o, loop.o, unroll.o): Replace loop.h with LOOP_H.
From-SVN: r30720
Diffstat (limited to 'gcc/sbitmap.c')
| -rw-r--r-- | gcc/sbitmap.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/sbitmap.c b/gcc/sbitmap.c index 4cc7c85f5c1..dece5e5ef25 100644 --- a/gcc/sbitmap.c +++ b/gcc/sbitmap.c @@ -265,6 +265,25 @@ sbitmap_a_or_b (dst, a, b) } return changed; } +/* Return non-zero if A is a subset of B. */ + +int +sbitmap_a_subset_b_p (a, b) + sbitmap a, b; +{ + int i; + sbitmap_ptr ap, bp; + + ap = a->elms; + bp = b->elms; + for (i = 0; i < a->size; i++) + { + if ((*ap | *bp) != *bp) + return 0; + ap++; bp++; + } + return 1; +} /* Set DST to be (A or (B and C)). Return non-zero if any change is made. */ |