[Bug middle-end/54553] atribute optimize on function affects optimization for other functions

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54553

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-09-12
     Ever Confirmed|0                           |1

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-09-12 09:33:25 UTC ---
Confirmed (I think we have a dup for this).  -O0 (and switching opts) sets
flag_no_inline:

  if (opts->x_optimize == 0)
    {
      /* Inlining does not work if not optimizing,
         so force it not to be done.  */
      opts->x_warn_inline = 0;
      opts->x_flag_no_inline = 1;
    }

but restoring options does not restore this flag because it is not
among the options handled by cl_optimization_save/restore - it's not
an "Optimization" option:

; General flag to enable inlining.  Specifying -fno-inline will disable
; all inlining apart from always-inline functions.
finline
Common Report Var(flag_no_inline,0) Init(0)
Enable inlining of function declared \"inline\", disabling disables all
inlining

Index: gcc/common.opt
===================================================================
--- gcc/common.opt      (revision 191209)
+++ gcc/common.opt      (working copy)
@@ -1289,7 +1289,7 @@ Perform indirect inlining
 ; General flag to enable inlining.  Specifying -fno-inline will disable
 ; all inlining apart from always-inline functions.
 finline
-Common Report Var(flag_no_inline,0) Init(0)
+Common Report Var(flag_no_inline,0) Init(0) Optimization
 Enable inlining of function declared \"inline\", disabling disables all
inlining

 finline-small-functions

might fix it.