With powerpc-apple-darwin7.9.0, version 4.3.0 20070223,
the polyhedron test 'fatigue.f90' (see
http://www.polyhedron.co.uk/pb05/polyhedron_benchmark_suite.html)
gives
...
Simulation terminated.
This sample will never fracture.
The imposed stress is below the fatigue limit.
See the output file for more information.
with optimisation -O1 and above.
It worked with 4.3.0 20070217. If I add the line
if(coefficient == 1000.0) print *, n, coefficient
after line 1428, the code works again.
I am attaching two reduced tests. The first one works without optimization,
gives
Simulation terminated.
Spin cycle = 100000
Time (sec) = 2.77778E+01
The maximum number of simulation spin cycles was exceeded.
with -O1, and
This sample will never fracture.
The imposed stress is below the fatigue limit.
with -O2.
The second test is similar to the previous one but works with
-O3 -ffast-math -funroll-loops
I have commented several variants which break the code.
Of special interest is !4 where
if (accumulated_plastic_strain < plastic_strain_threshold) then
else
is working, but not
if (accumulated_plastic_strain >= plastic_strain_threshold) then
Note that there is also some problems with the test 'induct.f90' see
http://gcc.gnu.org/ml/fortran/2007-02/msg00554.html
--
Summary: The polyhedron test 'fatigue.f90' is no longer working.
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: regression
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dominiq at lps dot ens dot fr
GCC target triplet: powerpc-apple-darwin7
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30969
