diff options
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 22 |
1 files changed, 15 insertions, 7 deletions
@@ -2055,14 +2055,15 @@ flow_call_edges_add (blocks) return blocks_split; } -/* Delete all unreachable basic blocks. */ +/* Find unreachable blocks. An unreachable block will have NULL in + block->aux, a non-NULL value indicates the block is reachable. */ -static void -delete_unreachable_blocks () +void +find_unreachable_blocks () { - basic_block *worklist, *tos; edge e; int i, n; + basic_block *tos, *worklist; n = n_basic_blocks; tos = worklist = (basic_block *) xmalloc (sizeof (basic_block) * n); @@ -2098,11 +2099,20 @@ delete_unreachable_blocks () } } + free (worklist); +} + +/* Delete all unreachable basic blocks. */ +static void +delete_unreachable_blocks () +{ + int i; + /* Delete all unreachable basic blocks. Count down so that we don't interfere with the block renumbering that happens in flow_delete_block. */ - for (i = n - 1; i >= 0; --i) + for (i = n_basic_blocks - 1; i >= 0; --i) { basic_block b = BASIC_BLOCK (i); @@ -2114,8 +2124,6 @@ delete_unreachable_blocks () } tidy_fallthru_edges (); - - free (worklist); } /* Return true if NOTE is not one of the ones that must be kept paired, |