[Bug libgomp/84466] New: [8 regression] libgomp.graphite/force-parallel-8.c fails starting with r257723

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84466

            Bug ID: 84466
           Summary: [8 regression] libgomp.graphite/force-parallel-8.c
                    fails starting with r257723
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libgomp
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
                CC: jakub at gcc dot gnu.org
  Target Milestone: ---

I am seeing this on powerpc64 both LE and BE.

spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-test2/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test2/gcc/
/home/seurer/gcc/gcc-test2/libgomp/testsuite/libgomp.graphite/force-parallel-8.c
-B/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgomp/
-B/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgomp/.libs
-I/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgomp
-I/home/seurer/gcc/gcc-test2/libgomp/testsuite/../../include
-I/home/seurer/gcc/gcc-test2/libgomp/testsuite/.. -fmessage-length=0
-fno-diagnostics-show-caret -Wno-hsa -fdiagnostics-color=never -fopenmp -ansi
-pedantic-errors -O2 -ftree-parallelize-loops=4 -floop-parallelize-all
-fdump-tree-parloops-details -fdump-tree-optimized -fno-loop-strip-mine
-fno-loop-block -fdump-tree-graphite-all
-L/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgomp/.libs
-lm -o ./force-parallel-8.exe
PASS: libgomp.graphite/force-parallel-8.c (test for excess errors)
Setting LD_LIBRARY_PATH to
.:/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgomp/.libs:/home/seurer/gcc/build/gcc-test2/gcc:/home/seurer/gcc/build/gcc-test2/gcc/32:.:/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgomp/.libs:/home/seurer/gcc/build/gcc-test2/gcc:/home/seurer/gcc/build/gcc-test2/gcc/32:/home/seurer/gcc/build/gcc-test2/./gmp/.libs:/home/seurer/gcc/build/gcc-test2/./prev-gmp/.libs:/home/seurer/gcc/build/gcc-test2/./mpfr/src/.libs:/home/seurer/gcc/build/gcc-test2/./prev-mpfr/src/.libs:/home/seurer/gcc/build/gcc-test2/./mpc/src/.libs:/home/seurer/gcc/build/gcc-test2/./prev-mpc/src/.libs:/home/seurer/gcc/build/gcc-test2/./isl/.libs:/home/seurer/gcc/build/gcc-test2/./prev-isl/.libs:/home/seurer/gcc/install/gcc-6.3.0/lib64
spawn [open ...]
PASS: libgomp.graphite/force-parallel-8.c execution test
FAIL: libgomp.graphite/force-parallel-8.c scan-tree-dump-times graphite "5
loops carried no dependency" 1 (found 0 times)
PASS: libgomp.graphite/force-parallel-8.c scan-tree-dump-times optimized
"loopfn.0" 4
PASS: libgomp.graphite/force-parallel-8.c scan-tree-dump-times optimized
"loopfn.1" 4
testcase
/home/seurer/gcc/gcc-test2/libgomp/testsuite/libgomp.graphite/graphite.exp
completed in 2 seconds

                === libgomp Summary ===

# of expected passes            4
# of unexpected failures        1