Sebastian,
I saw you updated the Graphite Wiki page, and I wondered if there are
any concrete plans on loop fusion.
The reason I ask is because in Fortran (as of Fortran 90) one often sees
assignments like:
REAL, ALLOCATABLE :: A(:,:), B(:,:), C(:,:), D(:,:), E(:,:), F(:,:)
! ... READ IN EXTEND OF ARRAYS ...
READ*,N
! ... ALLOCATE ARRAYS
ALLOCATE(A(N,N),B(N,N),C(N,N),D(N,N),E(N,N),F(N,N))
! ... READ IN ARRAYS
READ*,A,B
C = A + B
D = A * C
E = B * EXP(D)
F = C * LOG(E)
where the four assignments all have the structure of loops like:
DO I = 1, N
DO J = 1, N
X(J,I) = OP(A(J,I), B(J,I))
ENDDO
ENDDO
Obviously, this could benefit from loop fusion, by combining the four
assignments in one loop.
Is that on the horizon ?
Thanks in advance,
--
Toon Moene - e-mail: t...@moene.org - phone: +31 346 214290
Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
At home: http://moene.org/~toon/
Progress of GNU Fortran: http://gcc.gnu.org/gcc-4.5/changes.html
