https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65797
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Blocks| |63572
Target Milestone|12.5 |12.0
Resolution|--- |FIXED
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=97937,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=63572
--- Comment #26 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>When I compile this -g -O2 -fno-optimize-sibling-calls on x86_64 f2 is
>converted into a function that does nothing but call f3.
The opposite happens starting in GCC 7.
Note starting in GCC 9, -fno-optimize-sibling-calls becomes ineffective.
Note starting in GCC 10, you need -fno-inline-functions, otherwise f2 will
inline into f3.
Starting in GCC 12, we get a line information for f3 now for the sibcall:
```
f3:
.LFB5:
.cfi_startproc
.loc 1 29 1 is_stmt 1 view .LVU15
jmp f2
.cfi_endproc
```
That was changed due to PR 97937 which was marked as a dup of bug 63572 rather
than this one.
So this specific issue is fixed now.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63572
[Bug 63572] [12/13/14/15 Regression] ICF breaks user debugging experience
