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[Bug target/84172] option "-O3" create slower code
- From: "pinskia at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 01 Feb 2018 21:30:51 +0000
- Subject: [Bug target/84172] option "-O3" create slower code
- Auto-submitted: auto-generated
- References: <bug-84172-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84172
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-suse-linux
Component|c |target
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Can you provide the output of the following command:
gcc-5 -march=native -mtune=native -g -static -O3 -o test.3 main.c -v
We need to know what -march=native expands to.