The following ignores -gsplit-dwarf when doing LTO since its model
seems to be fundamentally incompatible, see my last comment in the
now suspended PR.
Bootstrap & regtest running on x86_64-unknown-linux-gnu, I'll apply
this to trunk and GCC 8 branch.
Richard.
2019-03-19 Richard Biener <rguent...@suse.de>
PR debug/88389
* opts.c (finish_options): Disable -gsplit-dwarf when doing LTO.
Index: gcc/opts.c
===================================================================
--- gcc/opts.c (revision 269793)
+++ gcc/opts.c (working copy)
@@ -1077,6 +1077,14 @@ finish_options (struct gcc_options *opts
"linker plugin");
opts->x_flag_fat_lto_objects = 1;
}
+
+ /* -gsplit-dwarf isn't compatible with LTO, see PR88389. */
+ if (opts->x_dwarf_split_debug_info)
+ {
+ inform (loc, "%<-gsplit-dwarf%> is not supported with LTO,"
+ " disabling");
+ opts->x_dwarf_split_debug_info = 0;
+ }
}
/* We initialize opts->x_flag_split_stack to -1 so that targets can set a
