: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: wkaras at yahoo dot com
Target Milestone: ---
Here is an example:
--
(conanrunenv) [root@d761696b8abf VagueDynLink]# bash -x x.sh
+ cat
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: wkaras at yahoo dot com
Target Milestone: ---
In this example, the optimization behavior changes simply by adding the
constexpr keyword: https://gcc.godbolt.org/z/3zWWrH
My
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92572
--- Comment #3 from Walt Karas ---
(conanrunenv) [root@d761696b8abf setup-work]# cc -v
Using built-in specs.
COLLECT_GCC=cc
COLLECT_LTO_WRAPPER=/opt/rh/devtoolset-8/root/usr/libexec/gcc/x86_64-redhat-linux/8/lto-wrapper
Target: x86_64-redhat-linu
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92572
--- Comment #4 from Walt Karas ---
(conanrunenv) [root@d761696b8abf VagueDynLink]# cc -O2 -Wall -Wextra -pedantic
-std=c++17 -fno-strict-aliasing -fwrapv -S main.cc
(conanrunenv) [root@d761696b8abf VagueDynLink]# cat main.s
.file "main.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92572
--- Comment #7 from Walt Karas ---
I see this problem running in a Docker container on a MacBook. When I try it
on the Mac (clang, Darwin kernel), the output is 2.
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: wkaras at yahoo dot com
Target Milestone: ---
I compiled this code with -O2, and with either -x c or -x c++ . The
optimization seems to work much better for C
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89937
--- Comment #2 from Walt Karas ---
(In reply to Andrew Pinski from comment #1)
> This is because of the way inline have different semantics between the two
> langauges.
>
> If I change TSFastDbg to be static instead of just inline, then the code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89937
--- Comment #6 from Walt Karas ---
Yes, very sorry, I didn't realize inline was so different in C, and I also
didn't read the generated machine code carefully enough. It does seem
extremely surprising that, for C, the body of an inline function
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: wkaras at yahoo dot com
Target Milestone: ---
Created attachment 38331
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38331&action=edit
bash script, see bug description
The v
