diff options
Diffstat (limited to 'gcc-4.7/gcc/tree-ssa-math-opts.c')
| -rw-r--r-- | gcc-4.7/gcc/tree-ssa-math-opts.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc-4.7/gcc/tree-ssa-math-opts.c b/gcc-4.7/gcc/tree-ssa-math-opts.c index a00541fbd..077e88a63 100644 --- a/gcc-4.7/gcc/tree-ssa-math-opts.c +++ b/gcc-4.7/gcc/tree-ssa-math-opts.c @@ -1387,12 +1387,18 @@ execute_cse_sincos (void) FOR_EACH_BB (bb) { gimple_stmt_iterator gsi; + bool cleanup_eh = false; for (gsi = gsi_after_labels (bb); !gsi_end_p (gsi); gsi_next (&gsi)) { gimple stmt = gsi_stmt (gsi); tree fndecl; + /* Only the last stmt in a bb could throw, no need to call + gimple_purge_dead_eh_edges if we change something in the middle + of a basic block. */ + cleanup_eh = false; + if (is_gimple_call (stmt) && gimple_call_lhs (stmt) && (fndecl = gimple_call_fndecl (stmt)) @@ -1430,6 +1436,7 @@ execute_cse_sincos (void) gimple_set_location (new_stmt, loc); unlink_stmt_vdef (stmt); gsi_replace (&gsi, new_stmt, true); + cleanup_eh = true; } break; @@ -1450,6 +1457,7 @@ execute_cse_sincos (void) gimple_set_location (new_stmt, loc); unlink_stmt_vdef (stmt); gsi_replace (&gsi, new_stmt, true); + cleanup_eh = true; } break; @@ -1465,6 +1473,7 @@ execute_cse_sincos (void) gimple_set_location (new_stmt, loc); unlink_stmt_vdef (stmt); gsi_replace (&gsi, new_stmt, true); + cleanup_eh = true; } break; @@ -1472,6 +1481,8 @@ execute_cse_sincos (void) } } } + if (cleanup_eh) + cfg_changed |= gimple_purge_dead_eh_edges (bb); } statistics_counter_event (cfun, "sincos statements inserted", |