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Diffstat (limited to 'gcc/tree-ssa-dce.c')
| -rw-r--r-- | gcc/tree-ssa-dce.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c index fdfdda5e95f..86134ad0970 100644 --- a/gcc/tree-ssa-dce.c +++ b/gcc/tree-ssa-dce.c @@ -1137,7 +1137,8 @@ eliminate_unnecessary_stmts (void) for (bb = ENTRY_BLOCK_PTR->next_bb; bb != EXIT_BLOCK_PTR; bb = next_bb) { next_bb = bb->next_bb; - if (!(bb->flags & BB_REACHABLE)) + if (!TEST_BIT (bb_contains_live_stmts, bb->index) + || !(bb->flags & BB_REACHABLE)) { for (gsi = gsi_start_phis (bb); !gsi_end_p (gsi); gsi_next (&gsi)) if (!is_gimple_reg (gimple_phi_result (gsi_stmt (gsi)))) @@ -1159,7 +1160,8 @@ eliminate_unnecessary_stmts (void) if (found) mark_virtual_phi_result_for_renaming (gsi_stmt (gsi)); } - delete_basic_block (bb); + if (!(bb->flags & BB_REACHABLE)) + delete_basic_block (bb); } } } |