From f8ef82ea63cb3c20dea272738484a08e9a8203fd Mon Sep 17 00:00:00 2001 From: Kazu Hirata Date: Mon, 17 Jan 2005 18:44:18 +0000 Subject: [PATCH] tree-cfg.c (tree_forwarder_block_p): Speed up by walking through the statements backward. * tree-cfg.c (tree_forwarder_block_p): Speed up by walking through the statements backward. From-SVN: r93768 --- gcc/ChangeLog | 3 +++ gcc/tree-cfg.c | 6 +++--- 2 files changed, 6 insertions(+), 3 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e6777c8e017..fa24164f019 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -2,6 +2,9 @@ * tree-cfg.c (tree_can_merge_blocks_p): Reorder two checks. + * tree-cfg.c (tree_forwarder_block_p): Speed up by walking + through the statements backward. + 2005-01-17 Ian Lance Taylor PR middle-end/13127: diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c index 14c901ddf75..d3607190e48 100644 --- a/gcc/tree-cfg.c +++ b/gcc/tree-cfg.c @@ -3911,9 +3911,9 @@ tree_forwarder_block_p (basic_block bb) gcc_assert (bb != ENTRY_BLOCK_PTR); #endif - /* Now walk through the statements. We can ignore labels, anything else - means this is not a forwarder block. */ - for (bsi = bsi_start (bb); !bsi_end_p (bsi); bsi_next (&bsi)) + /* Now walk through the statements backward. We can ignore labels, + anything else means this is not a forwarder block. */ + for (bsi = bsi_last (bb); !bsi_end_p (bsi); bsi_next (&bsi)) { tree stmt = bsi_stmt (bsi); -- 2.30.2