http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54693
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |
--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-06
09:45:58 UTC ---
Not completely. Apparently the new testcase fails on both x86_64-linux and
i686-linux with -O1 -g. The reason for that is that with -O1 jump threading
isn't performed, and the bb duplication is done in tree-ssa-loop-ch.c instead.
So, I'd say we want to do something similar to what
propagate_threaded_block_debug_into does, in copy_loop_headers or so, on
copied_bbs, copying debug stmts into the loop body (exit->dest before the
gimple_duplicate_sese_region call).
Calling p propagate_threaded_block_debug_into (exit->dest, entry->dest)
from the debugger fixed the testcase for -O1 -g.
