diff options
Diffstat (limited to 'gcc/tree-cfg.c')
| -rw-r--r-- | gcc/tree-cfg.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c index b7fe313..14f121d 100644 --- a/gcc/tree-cfg.c +++ b/gcc/tree-cfg.c @@ -9410,6 +9410,31 @@ gimple_switch_default_edge (function *ifun, gswitch *gs) return gimple_switch_edge (ifun, gs, 0); } +/* Return true if the only executable statement in BB is a GIMPLE_COND. */ + +bool +cond_only_block_p (basic_block bb) +{ + /* BB must have no executable statements. */ + gimple_stmt_iterator gsi = gsi_after_labels (bb); + if (phi_nodes (bb)) + return false; + while (!gsi_end_p (gsi)) + { + gimple *stmt = gsi_stmt (gsi); + if (is_gimple_debug (stmt)) + ; + else if (gimple_code (stmt) == GIMPLE_NOP + || gimple_code (stmt) == GIMPLE_PREDICT + || gimple_code (stmt) == GIMPLE_COND) + ; + else + return false; + gsi_next (&gsi); + } + return true; +} + /* Emit return warnings. */ |