gfortran -O2 -floop-block test.f90
test.f90: In function 'ivsort':
test.f90:1: error: edge from 7 to 12 should be marked irreducible
test.f90:1: error: basic block 12 should be marked irreducible
test.f90:1: internal compiler error: in verify_loop_structure, at
cfgloop.c:1569
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
This was tested on the graphite branch. The reduced testcase is attached for
the same bug.
-Mitul Thakkar.
--
Summary: [graphite] ICE: in verify_loop_structure, at
cfgloop.c:1569
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: mitul dot thakkar at amd dot com
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38083
