[Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87761

--- Comment #18 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Sun Mar 24 15:20:52 2019
New Revision: 269896

URL: https://gcc.gnu.org/viewcvs?rev=269896&root=gcc&view=rev
Log:
        PR rtl-optimization/87761
        * regcprop.c (copyprop_hardreg_forward_1): Check may_trap_p on SET,
        not INSN.  Also check RTX_FRAME_RELATED_P.  Queue insns for DF rescan
        as needed.
        (pass_cprop_hardreg::execute): Add df note problem and defer insn
        rescans.  Reprocess blocks as needed, calling df_analyze before
        reprocessing.  Always call df_analyze before fixing up debug bind
        insns.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/regcprop.c