diff options
Diffstat (limited to 'gcc/opts.c')
| -rw-r--r-- | gcc/opts.c | 23 |
1 files changed, 18 insertions, 5 deletions
@@ -849,15 +849,28 @@ decode_options (unsigned int argc, const char **argv) } } - if (!optimize) + + if (!flag_unit_at_a_time) { - flag_merge_constants = 0; + flag_section_anchors = 0; + flag_toplevel_reorder = 0; + flag_unit_at_a_time = 1; + } + if (!flag_toplevel_reorder) + { + if (flag_section_anchors == 1) + error ("Section anchors must be disabled when toplevel reorder is disabled."); + flag_section_anchors = 0; } - if (!no_unit_at_a_time_default) + if (!optimize) { - flag_unit_at_a_time = 1; - if (!optimize) + flag_merge_constants = 0; + + /* We disable toplevel reordering at -O0 to disable transformations that + might be surprising to end users and to get -fno-toplevel-reorder + tested, but we keep section anchors. */ + if (flag_toplevel_reorder == 2) flag_toplevel_reorder = 0; } |