From a8db46399145170704c8046a6fc8fd3005e20892 Mon Sep 17 00:00:00 2001
From: Andy Fiddaman <illumos@fiddaman.net>
Date: Wed, 26 Oct 2022 12:53:51 +0000
Subject: Add -fforce-omit-frame-pointer
---
gcc/common.opt | 4 ++++
gcc/config/i386/i386-options.cc | 7 +++++--
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/gcc/common.opt b/gcc/common.opt
index d5460f4727c2..e02f3bef41fa 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -2230,6 +2230,10 @@ fomit-frame-pointer
Common Var(flag_omit_frame_pointer) Optimization
When possible do not generate stack frames.
+fforce-omit-frame-pointer
+Common Var(flag_force_omit_frame_pointer) Optimization
+When possible, do not generate stack frames. Hinders debugging with mdb and dtrace.
+
fopenmp-target-simd-clone
Common Alias(fopenmp-target-simd-clone=,any,none)
diff --git a/gcc/config/i386/i386-options.cc b/gcc/config/i386/i386-options.cc
index 50a2511c5e2d..7fe1047185c8 100644
--- a/gcc/config/i386/i386-options.cc
+++ b/gcc/config/i386/i386-options.cc
@@ -2979,8 +2979,11 @@ ix86_option_override_internal (bool main_args_p,
* questionable benefit anyway, even on i386.
*/
- flag_omit_frame_pointer = 0;
- opts->x_flag_omit_frame_pointer = 0;
+ if (flag_force_omit_frame_pointer == 0)
+ {
+ flag_omit_frame_pointer = 0;
+ opts->x_flag_omit_frame_pointer = 0;
+ }
/* Save the initial options in case the user does function specific
options. */