[Bug rtl-optimization/88390] [9 regression] g++.dg/tree-prof/pr57451.C FAILs

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88390

--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Sat Dec  8 11:07:53 2018
New Revision: 266906

URL: https://gcc.gnu.org/viewcvs?rev=266906&root=gcc&view=rev
Log:
        PR rtl-optimization/88390
        * dwarf2cfi.c (struct dw_cfi_row): Add window_save field.
        (cfi_row_equal_p): Compare it.
        (dwarf2out_frame_debug_cfa_window_save): Add FAKE parameter.
        If FAKE is false, set window_save of the current row.
        (dwarf2out_frame_debug) <REG_CFA_TOGGLE_RA_MANGLE>: Call above
        function with FAKE parameter set to true.
        <REG_CFA_WINDOW_SAVE>: Likewise but with FAKE parameter set to false.
        (change_cfi_row): Emit a DW_CFA_GNU_window_save if necessary.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dwarf2cfi.c