https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97260
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Bisection points to r200211 as the first commit after which the call wasn't
folded:
commit 6a6dac5293ee21d9aed0d394a0cb23948bb1efad
Author: Jan Hubicka <j...@suse.cz>
Date: Wed Jun 19 20:06:12 2013 +0200
cgraph.h (const_value_known_p): Replace by ...
* cgraph.h (const_value_known_p): Replace by ...
(ctor_for_folding): .. this one.
* cgraphunit.c (process_function_and_variable_attributes): Use it.
* lto-cgraph.c (compute_ltrans_boundary): Use ctor_for_folding.
* expr.c (expand_expr_real_1): Likewise.
(string_constant): Likewise.
* tree-ssa-loop-ivcanon.c (constant_after_peeling): Likewise.
* ipa.c (process_references): Likewise.
(symtab_remove_unreachable_nodes): Likewise.
* ipa-inline-analysis.c (param_change_prob): Likewise.
* gimple-fold.c (canonicalize_constructor_val): Likewise.
(get_base_constructor): Likwise.
* varpool.c (varpool_remove_node): Likewise.
(varpool_remove_initializer): LIkewise.
(dump_varpool_node): LIkwise.
(const_value_known_p): Rewrite to ...
(ctor_for_folding): ... this one.
* lto-partition.c (add_references_to_partition): Use
ctor_for_folding.
* gcc.dg/tree-ssa/attr-alias-2.c: New testcase.
From-SVN: r200211
