[Bug debug/83422] [8 Regression] ICE: in final_scan_insn, at final.c:2429 after "variable tracking size limit exceeded with -fvar-tracking-assignments, retrying without"

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83422

--- Comment #8 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Tue Dec 19 17:50:54 2017
New Revision: 255834

URL: https://gcc.gnu.org/viewcvs?rev=255834&root=gcc&view=rev
Log:
SFN: don't drop markers for skipping var-tracking

Although debug markers are more useful when bind stmts are placed
among them, there is value in keeping them even when VTA limits are
exceeded.

for  gcc/ChangeLog

        PR debug/83422
        * var-tracking.c (vt_debug_insns_local): Do not drop markers.
        (variable_tracking_main_1): Keep markers even when VTA fails.

for  gcc/testsuite/ChangeLog

        PR debug/83422
        * gcc.dg/pr83422.c: New.

Added:
    trunk/gcc/testsuite/gcc.dg/pr83422.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/var-tracking.c