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| author | Richard Biener <rguenther@suse.de> | 2016-08-23 07:23:19 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2016-08-23 07:23:19 +0000 |
| commit | 1fd9f058f37ba4c17cd34e961fe4879e7dd7e3bc (patch) | |
| tree | 78232f581677e4708f81fc0025d91b370e95ffea /gcc/tree-vrp.c | |
| parent | e83421c08ff730d683c4921c07cf7f327a6bab89 (diff) | |
| download | gcc-1fd9f058f37ba4c17cd34e961fe4879e7dd7e3bc.zip gcc-1fd9f058f37ba4c17cd34e961fe4879e7dd7e3bc.tar.gz gcc-1fd9f058f37ba4c17cd34e961fe4879e7dd7e3bc.tar.bz2 | |
re PR middle-end/27336 (delete null checks in callers to nonnull functions)
2016-08-23 Richard Biener <rguenther@suse.de>
PR tree-optimization/27336
* tree-vrp.c (infer_value_range): Handle stmts that can throw
by looking for a non-EH edge.
(process_assert_insertions_for): Likewise.
* c-c++-common/pr27336.c: New testcase.
From-SVN: r239684
Diffstat (limited to 'gcc/tree-vrp.c')
| -rw-r--r-- | gcc/tree-vrp.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c index 86f2a8f..45882c4 100644 --- a/gcc/tree-vrp.c +++ b/gcc/tree-vrp.c @@ -4782,11 +4782,6 @@ infer_value_range (gimple *stmt, tree op, tree_code *comp_code_p, tree *val_p) if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (op)) return false; - /* Similarly, don't infer anything from statements that may throw - exceptions. ??? Relax this requirement? */ - if (stmt_could_throw_p (stmt)) - return false; - /* If STMT is the last statement of a basic block with no normal successors, there is no point inferring anything about any of its operands. We would not be able to find a proper insertion point @@ -4797,7 +4792,7 @@ infer_value_range (gimple *stmt, tree op, tree_code *comp_code_p, tree *val_p) edge e; FOR_EACH_EDGE (e, ei, gimple_bb (stmt)->succs) - if (!(e->flags & EDGE_ABNORMAL)) + if (!(e->flags & (EDGE_ABNORMAL|EDGE_EH))) break; if (e == NULL) return false; @@ -6370,10 +6365,10 @@ process_assert_insertions_for (tree name, assert_locus *loc) /* If STMT must be the last statement in BB, we can only insert new assertions on the non-abnormal edge out of BB. Note that since - STMT is not control flow, there may only be one non-abnormal edge + STMT is not control flow, there may only be one non-abnormal/eh edge out of BB. */ FOR_EACH_EDGE (e, ei, loc->bb->succs) - if (!(e->flags & EDGE_ABNORMAL)) + if (!(e->flags & (EDGE_ABNORMAL|EDGE_EH))) { gsi_insert_on_edge (e, assert_stmt); return true; |