PR debug/55608
* dwarf2out.c (tree_add_const_value_attribute): Call ggc_free (array)
on failure.
(resolve_one_addr): Fail if referenced STRING_CST hasn't been written.
(string_cst_pool_decl): New function.
(optimize_one_addr_into_implicit_ptr): New function.
(resolve_addr_in_expr): Optimize DWARF location expression
DW_OP_addr DW_OP_stack_value where DW_OP_addr refers to some variable
which doesn't live in memory, but has DW_AT_location or
DW_AT_const_value, or refers to a string literal, into
DW_OP_GNU_implicit_pointer.
(optimize_location_into_implicit_ptr): New function.
(resolve_addr): If removing DW_AT_location of a variable because
it was DW_OP_addr of address of the variable, but the variable doesn't
live in memory, try to emit const value attribute for the initializer.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@196886
138bc75d-0d04-0410-961f-
82ee72b054a4