------- Comment #11 from spop at gcc dot gnu dot org 2010-01-08 18:58 -------
On the graphite branch this fails with the following options:
gfortran -O2 -fno-loop-block -fno-loop-interchange -fno-loop-strip-mine
-fgraphite-identity pr42393.f90
Here is a further reduced testcase.
MODULE beta_gamma_psi
INTEGER, PARAMETER :: dp=KIND(0.0D0)
CONTAINS
FUNCTION basym () RESULT(fn_val)
REAL(dp) :: b0(21), bsum, d(21)
DO n = 2, num, 2
DO i = n, np1
b0(1) = 1
DO m = 2, i
mm1 = m - 1
DO j = 1, mm1
bsum = bsum + b0(j)
END DO
b0(m) = bsum
END DO
d(i) = -b0(i)
END DO
sum = sum + d(n)
END DO
fn_val = sum
END FUNCTION basym
END MODULE beta_gamma_psi
The problem seems to be in the code generation when replacing the end
value from a loop.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42393
