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| author | Andrew MacLeod <amacleod@redhat.com> | 2004-11-03 18:56:35 +0000 |
|---|---|---|
| committer | Andrew Macleod <amacleod@gcc.gnu.org> | 2004-11-03 18:56:35 +0000 |
| commit | b00e4c238b56689ec1e81a647a0147bf9ff79306 (patch) | |
| tree | d5b2ead3bc25a2263a17eef69ace1e75f2503ab5 | |
| parent | a85a902471ec546f41cd2774c2a339354cc40a50 (diff) | |
| download | gcc-b00e4c238b56689ec1e81a647a0147bf9ff79306.zip gcc-b00e4c238b56689ec1e81a647a0147bf9ff79306.tar.gz gcc-b00e4c238b56689ec1e81a647a0147bf9ff79306.tar.bz2 | |
re PR tree-optimization/18270 (internal compiler error: in tree_redirect_edge_and_branch, at tree-cfg.c:4146)
2004-11-03 Andrew MacLeod <amacleod@redhat.com>
PR tree-optimization/18270
* tree-outof-ssa.c (analyze_edges_for_bb): If a block has any incoming
abnormal edges, simply commit any pending stmts on all incoming edges.
From-SVN: r90031
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/tree-outof-ssa.c | 19 |
2 files changed, 25 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index accb133..e8208f5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2004-11-03 Andrew MacLeod <amacleod@redhat.com> + + PR tree-optimization/18270 + * tree-outof-ssa.c (analyze_edges_for_bb): If a block has incoming + abnormal edges, commit all pending stmts on incoming edges. + 2004-11-03 Ulrich Weigand <uweigand@de.ibm.com> * tree-ssa-loop-ivopts.c (get_address_cost): Offset zero does not diff --git a/gcc/tree-outof-ssa.c b/gcc/tree-outof-ssa.c index 6d33c47..074ca5b 100644 --- a/gcc/tree-outof-ssa.c +++ b/gcc/tree-outof-ssa.c @@ -2024,6 +2024,25 @@ analyze_edges_for_bb (basic_block bb, FILE *debug_file) bool is_label; count = 0; + + /* Blocks which contain at least one abnormal edge cannot use + make_forwarder_block. Look for these blocks, and commit any PENDING_STMTs + found on edges in these block. */ + have_opportunity = true; + FOR_EACH_EDGE (e, ei, bb->preds) + if (e->flags & EDGE_ABNORMAL) + { + have_opportunity = false; + break; + } + + if (!have_opportunity) + { + FOR_EACH_EDGE (e, ei, bb->preds) + if (PENDING_STMT (e)) + bsi_commit_one_edge_insert (e, NULL); + return false; + } /* Find out how many edges there are with interesting pending stmts on them. Commit the stmts on edges we are not interested in. */ FOR_EACH_EDGE (e, ei, bb->preds) |