components/developer/gcc-12/patches/0036-Add-fforce-omit-frame-pointer.patch

   1 From 72f8c0bf6e342ffa80a6cd8460608cdda57bb30e Mon Sep 17 00:00:00 2001
   2 From: Andy Fiddaman <illumos@fiddaman.net>
   3 Date: Wed, 26 Oct 2022 12:53:51 +0000
   4 Subject: Add -fforce-omit-frame-pointer
   5
   6 ---
   7  gcc/common.opt                  | 4 ++++
   8  gcc/config/i386/i386-options.cc | 7 +++++--
   9  2 files changed, 9 insertions(+), 2 deletions(-)
  10
  11 diff --git a/gcc/common.opt b/gcc/common.opt
  12 index 9dad568d6e6..4896e4ad644 100644
  13 --- a/gcc/common.opt
  14 +++ b/gcc/common.opt
  15 @@ -2191,6 +2191,10 @@ fomit-frame-pointer
  16  Common Var(flag_omit_frame_pointer) Optimization
  17  When possible do not generate stack frames.
  18
  19 +fforce-omit-frame-pointer
  20 +Common Var(flag_force_omit_frame_pointer) Optimization
  21 +When possible, do not generate stack frames. Hinders debugging with mdb and dtrace.
  22 +
  23  fopt-info
  24  Common Var(flag_opt_info) Optimization
  25  Enable all optimization info dumps on stderr.
  26 diff --git a/gcc/config/i386/i386-options.cc b/gcc/config/i386/i386-options.cc
  27 index 6e4c774b965..d09c68578cf 100644
  28 --- a/gcc/config/i386/i386-options.cc
  29 +++ b/gcc/config/i386/i386-options.cc
  30 @@ -2922,8 +2922,11 @@ ix86_option_override_internal (bool main_args_p,
  31     * questionable benefit anyway, even on i386.
  32     */
  33
  34 -  flag_omit_frame_pointer = 0;
  35 -  opts->x_flag_omit_frame_pointer = 0;
  36 +  if (flag_force_omit_frame_pointer == 0)
  37 +    {
  38 +      flag_omit_frame_pointer = 0;
  39 +      opts->x_flag_omit_frame_pointer = 0;
  40 +    }
  41
  42    /* Save the initial options in case the user does function specific
  43       options.  */