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[Bug fortran/52865] New: GCC can't vectorize fortran loop but able to vectorize similar c-loop
- From: "izamyatin at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 04 Apr 2012 13:26:24 +0000
- Subject: [Bug fortran/52865] New: GCC can't vectorize fortran loop but able to vectorize similar c-loop
- Auto-submitted: auto-generated
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52865
Bug #: 52865
Summary: GCC can't vectorize fortran loop but able to vectorize
similar c-loop
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: izamyatin@gmail.com
Target: x86-64
Created attachment 27087
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27087
Fortran test
That looks strange but the compiler behaves differently on O3 for attached test
cases.
Fortran can't vectorize loop which looks quite simple
Is it expected behavior?