From 7f103e88351413723e4dc3013824cf5a4c7a51f2 Mon Sep 17 00:00:00 2001 From: Stan Cox Date: Tue, 4 Jan 2000 17:19:41 +0000 Subject: [PATCH] haifa-sched.c (build_control_flow): Change unreachable simple loop test to check if... 2000-01-04 Stan Cox * haifa-sched.c (build_control_flow): Change unreachable simple loop test to check if current block has only one predecessor. (find_rgns): Initialize degree. Use dest as degree index, not src. From-SVN: r31208 --- gcc/ChangeLog | 6 ++++++ gcc/haifa-sched.c | 8 +++++--- 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index fa733454d43..6d630d441b4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2000-01-04 Stan Cox + + * haifa-sched.c (build_control_flow): Change unreachable simple + loop test to check if current block has only one predecessor. + (find_rgns): Initialize degree. Use dest as degree index, not src. + 2000-01-04 Kaveh R. Ghazi * builtins.c (expand_builtin_strlen): Initialize variable `icode'. diff --git a/gcc/haifa-sched.c b/gcc/haifa-sched.c index e3eedbb6793..f9fb50464f9 100644 --- a/gcc/haifa-sched.c +++ b/gcc/haifa-sched.c @@ -1061,7 +1061,7 @@ build_control_flow (edge_list) basic_block b = BASIC_BLOCK (i); if (b->pred == NULL - || (b->pred->dest == b + || (b->pred->src == b && b->pred->pred_next == NULL)) unreachable = 1; } @@ -1531,12 +1531,14 @@ find_rgns (edge_list, dom) to hold degree counts. */ degree = dfs_nr; + for (i = 0; i < n_basic_blocks; i++) + degree[i] = 0; for (i = 0; i < num_edges; i++) { edge e = INDEX_EDGE (edge_list, i); - if (e->src != ENTRY_BLOCK_PTR) - degree[e->src->index]++; + if (e->dest != EXIT_BLOCK_PTR) + degree[e->dest->index]++; } /* Do not perform region scheduling if there are any unreachable