This patch disables reorder_blocks_and_partition for DWARF2 unwinding. This is causing an internal application to segfault when built with AutoFDO+EH. Unfortunately, I don't have a small reproducible. But from the comment above the code, I do not see why UI_DWARF2 will survive the issue. Any comments?
Bootstrapped and test on-going. OK for trunk? Thanks, Dehao ChangeLog: 2015-06-23 Dehao Chen <de...@google.com> * opts.c(finish_options): Disable reorder_blocks_and_partition for DWARF2. Index: opts.c =================================================================== --- opts.c (revision 220823) +++ opts.c (working copy) @@ -740,7 +740,7 @@ finish_options (struct gcc_options *opts, struct g if (opts->x_flag_exceptions && opts->x_flag_reorder_blocks_and_partition - && (ui_except == UI_SJLJ || ui_except >= UI_TARGET)) + && (ui_except >= UI_SJLJ)) { if (opts_set->x_flag_reorder_blocks_and_partition) inform (loc,