[Bug middle-end/79236] New: [7 Regression] Many libgomp tests fail if configured with --enable-offload-targets=nvptx-none but NVidia HW or libcuda.so.1 unavailable

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79236

            Bug ID: 79236
           Summary: [7 Regression] Many libgomp tests fail if configured
                    with --enable-offload-targets=nvptx-none but NVidia HW
                    or libcuda.so.1 unavailable
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jakub at gcc dot gnu.org
  Target Milestone: ---

Many tests with combined simd constructs in target regions fail (timeout,
crash, ...) if nvptx-none offloading is configured, but fallback needs to be
used for whatever reason.
E.g.
FAIL: libgomp.c++/for-13.C execution test
FAIL: libgomp.c++/for-14.C execution test
FAIL: libgomp.c++/pr66199-5.C execution test
FAIL: libgomp.c++/pr66199-7.C execution test
FAIL: libgomp.c++/pr66199-8.C execution test
FAIL: libgomp.c/examples-4/teams-5.c execution test
FAIL: libgomp.c/examples-4/teams-6.c execution test
FAIL: libgomp.c/for-5.c execution test
FAIL: libgomp.c/for-6.c execution test
FAIL: libgomp.c/pr66199-5.c execution test
FAIL: libgomp.c/pr66199-7.c execution test
FAIL: libgomp.c/pr66199-8.c execution test
FAIL: libgomp.fortran/examples-4/teams-5.f90   -O1  execution test
FAIL: libgomp.fortran/examples-4/teams-5.f90   -O2  execution test
FAIL: libgomp.fortran/examples-4/teams-5.f90   -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: libgomp.fortran/examples-4/teams-5.f90   -O3 -g  execution test
FAIL: libgomp.fortran/examples-4/teams-5.f90   -Os  execution test
FAIL: libgomp.fortran/examples-4/teams-6.f90   -O1  execution test
FAIL: libgomp.fortran/examples-4/teams-6.f90   -O2  execution test
FAIL: libgomp.fortran/examples-4/teams-6.f90   -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: libgomp.fortran/examples-4/teams-6.f90   -O3 -g  execution test
FAIL: libgomp.fortran/examples-4/teams-6.f90   -Os  execution test
FAIL: libgomp.fortran/nestedfn5.f90   -O1  execution test
FAIL: libgomp.fortran/nestedfn5.f90   -O2  execution test
FAIL: libgomp.fortran/nestedfn5.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: libgomp.fortran/nestedfn5.f90   -O3 -g  execution test
FAIL: libgomp.fortran/nestedfn5.f90   -Os  execution test
FAIL: libgomp.fortran/target1.f90   -O1  execution test
FAIL: libgomp.fortran/target1.f90   -O2  execution test
FAIL: libgomp.fortran/target1.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: libgomp.fortran/target1.f90   -O3 -g  execution test
FAIL: libgomp.fortran/target1.f90   -Os  execution test
FAIL: libgomp.fortran/target6.f90   -O1  execution test
FAIL: libgomp.fortran/target6.f90   -O2  execution test
FAIL: libgomp.fortran/target6.f90   -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions  execution test
FAIL: libgomp.fortran/target6.f90   -O3 -g  execution test
FAIL: libgomp.fortran/target6.f90   -Os  execution test

all fail in that case.