[PATCH] Refactor the code to remove IS_UNKNOWN_LOCATION

[Dehao Chen <dehao at google dot com>]

IS_UNKNOWN_LOCATION is very misleading. This patch removes this macro
from input.h. For sites when checking LOCUS is intended, we explicit
use LOCATION_LOCUS and compare it to UNKNOWN_LOCATION.

Bootstrapped and passed all gcc regression tests.

Ok for trunk?

Thanks,
Dehao

gcc/ChangeLog:

2012-09-25  Dehao Chen  <dehao@google.com>

        * gcc/tree.h (tree_constructor): Remove IS_UNKNOWN_LOCATION.
        (extern void protected_set_expr_location): Likewise.
        (function_args_iter_next): Likewise.
        (inlined_function_outer_scope_p): Likewise.
        * gcc/input.h (IS_UNKNOWN_LOCATION): Likewise.
        * gcc/fold-const.c (expr_location_or): Likewise.
        * gcc/lto-cgraph.c (output_node_opt_summary): Likewise.
        * gcc/dwarf2out.c (add_src_coords_attributes): Likewise.
        * gcc/tree-eh.c (lower_try_finally_dup_block): Likewise.
        * gcc/profile.c (branch_prob):
        * gcc/cfgexpand.c (expand_gimple_cond): Likewise.
        (expand_gimple_basic_block): Likewise.
        (construct_exit_block): Likewise.
        (gimple_expand_cfg): Likewise.
        * gcc/cfgcleanup.c (try_forward_edges): Likewise.
        * gcc/tree-ssa-live.c (remove_unused_scope_block_p): Likewise.
        (dump_scope_block): Likewise.
        * gcc/ipa-prop.c (ipa_write_jump_function): Likewise.
        * gcc/rtl.h (extern void rtl_check_failed_flag): Likewise.
        * gcc/gimple.h (gimple_set_location): Likewise.
        (gimple_has_location): Likewise.
        * gcc/cfgrtl.c (unique_locus_on_edge_between_p): Likewise.
        (force_nonfallthru_and_redirect): Likewise.
        (fixup_reorder_chain): Likewise.
        (cfg_layout_merge_blocks): Likewise.

Attachment: patch.txt
Description: Text document