[Bug debug/89892] gcc generates wrong debug information at -O2

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89892

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Apr  5 11:55:45 2019
New Revision: 270165

URL: https://gcc.gnu.org/viewcvs?rev=270165&root=gcc&view=rev
Log:
2019-04-05  Richard Biener  <rguent...@suse.de>

        PR debug/89892
        PR debug/89905
        * tree-cfgcleanup.c (remove_forwarder_block): Always move
        debug bind stmts but reset them if they are not valid at the
        destination.

        * gcc.dg/guality/pr89892.c: New testcase.
        * gcc.dg/guality/pr89905.c: Likewise.
        * gcc.dg/guality/loop-1.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/guality/loop-1.c
    trunk/gcc/testsuite/gcc.dg/guality/pr89892.c
    trunk/gcc/testsuite/gcc.dg/guality/pr89905.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-cfgcleanup.c