[Bug rtl-optimization/83985] [8 Regression] Compile time hog for 32-bit BE powerpc targets

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83985

--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Jan 26 11:48:05 2018
New Revision: 257087

URL: https://gcc.gnu.org/viewcvs?rev=257087&root=gcc&view=rev
Log:
        PR rtl-optimization/83985
        * dce.c (deletable_insn_p): Return false for separate shrink wrapping
        REG_CFA_RESTORE insns.
        (delete_unmarked_insns): Don't ignore separate shrink wrapping
        REG_CFA_RESTORE insns here.

        * gcc.dg/pr83985.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr83985.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dce.c
    trunk/gcc/testsuite/ChangeLog