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| author | Jakub Jelinek <jakub@redhat.com> | 2010-08-26 18:39:26 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2010-08-26 18:39:26 +0200 |
| commit | 9e3920e97f0cc9df385cf357f4d123564e0da7ad (patch) | |
| tree | 4842034f20c95beead33bfbf7d7f7eef7bca0017 /gcc/tree-ssa-dce.c | |
| parent | 350b70702451004bf3f8b7e520b95728bc98cf28 (diff) | |
| download | gcc-9e3920e97f0cc9df385cf357f4d123564e0da7ad.tar.gz | |
re PR tree-optimization/44485 (ICE in get_expr_operands, at tree-ssa-operands.c:1020)
PR tree-optimization/44485
* calls.c (flags_from_decl_or_type): For const or pure
noreturn functions return ECF_LOOPING_CONST_OR_PURE|ECF_NORETURN
together with ECF_CONST resp. ECF_PURE.
* builtins.c (expand_builtin): Use flags_from_decl_or_type
instead of querying flags directly.
* tree-ssa-loop-niter.c (finite_loop_p): Likewise.
* tree-ssa-dce.c (find_obviously_necessary_stmts): Likewise.
* gcc.dg/pr44485.c: New test.
From-SVN: r163568
Diffstat (limited to 'gcc/tree-ssa-dce.c')
| -rw-r--r-- | gcc/tree-ssa-dce.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c index edec49d374f..a1a51914fa6 100644 --- a/gcc/tree-ssa-dce.c +++ b/gcc/tree-ssa-dce.c @@ -433,6 +433,7 @@ find_obviously_necessary_stmts (struct edge_list *el) gimple_stmt_iterator gsi; edge e; gimple phi, stmt; + int flags; FOR_EACH_BB (bb) { @@ -454,9 +455,8 @@ find_obviously_necessary_stmts (struct edge_list *el) /* Pure and const functions are finite and thus have no infinite loops in them. */ - if ((TREE_READONLY (current_function_decl) - || DECL_PURE_P (current_function_decl)) - && !DECL_LOOPING_CONST_OR_PURE_P (current_function_decl)) + flags = flags_from_decl_or_type (current_function_decl); + if ((flags & (ECF_CONST|ECF_PURE)) && !(flags & ECF_LOOPING_CONST_OR_PURE)) return; /* Prevent the empty possibly infinite loops from being removed. */ |