https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62283
Bug ID: 62283
Summary: SSE optimization fails
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: holst at matmech dot com
If the `value` specifier below is removed, GFortran generates scalar code
instead of vectorized code as it should.
$ cat saxpy.f
subroutine saxpy(alpha,x,y)
value alpha
real x(4),y(4)
y(1)=y(1)+alpha*x(1)
y(2)=y(2)+alpha*x(2)
y(3)=y(3)+alpha*x(3)
y(4)=y(4)+alpha*x(4)
end
$ gfortran -S -msse2 -O3 saxpy.f
$ more saxpy.s
