https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95654
Bug ID: 95654
Summary: nvptx offloading: FAIL: libgomp.fortran/pr66199-5.f90
-O3 -fomit-frame-pointer -funroll-loops -fpeel-loops
-ftracer -finline-functions execution test
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: openmp
Severity: normal
Priority: P3
Component: fortran
Assignee: burnus at gcc dot gnu.org
Reporter: tschwinge at gcc dot gnu.org
CC: jakub at gcc dot gnu.org
Target Milestone: ---
The recent PR94690 commit f884bef21cccc05d748fd7869cd641cbb4f6b6bb "[Fortran]
OpenMP - permit lastprivate in distribute + SIMD fixes (PR94690)" added new
test cases, one of which FAILs for nvptx offloading in a high optimization
variant (only):
PASS: libgomp.fortran/pr66199-5.f90 -O0 (test for excess errors)
PASS: libgomp.fortran/pr66199-5.f90 -O0 execution test
PASS: libgomp.fortran/pr66199-5.f90 -O1 (test for excess errors)
PASS: libgomp.fortran/pr66199-5.f90 -O1 execution test
PASS: libgomp.fortran/pr66199-5.f90 -O2 (test for excess errors)
PASS: libgomp.fortran/pr66199-5.f90 -O2 execution test
PASS: libgomp.fortran/pr66199-5.f90 -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions (test for excess
errors)
FAIL: libgomp.fortran/pr66199-5.f90 -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions execution test
PASS: libgomp.fortran/pr66199-5.f90 -O3 -g (test for excess errors)
PASS: libgomp.fortran/pr66199-5.f90 -O3 -g execution test
PASS: libgomp.fortran/pr66199-5.f90 -Os (test for excess errors)
PASS: libgomp.fortran/pr66199-5.f90 -Os execution test
The one FAIL is:
STOP 3
FAIL: libgomp.fortran/pr66199-5.f90 -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions execution test
Compiling manually, I'm seeing:
source-gcc/libgomp/testsuite/libgomp.fortran/pr66199-5.f90: In function
‘__m_MOD_f4._omp_fn.0’:
source-gcc/libgomp/testsuite/libgomp.fortran/pr66199-5.f90:61: warning:
‘.count.16’ may be used uninitialized in this function [-Wmaybe-uninitialized]
61 | end
|
source-gcc/libgomp/testsuite/libgomp.fortran/pr66199-5.f90: In function
‘__m_MOD_f3._omp_fn.0’:
source-gcc/libgomp/testsuite/libgomp.fortran/pr66199-5.f90:48: warning:
‘.count.102’ may be used uninitialized in this function [-Wmaybe-uninitialized]
48 | end
|
I haven't assessed whether that's relevant.
I don't see the problem when running with Intel MIC (emulated) offloading (via
setting 'CUDA_VISIBLE_DEVICES=n_o-N-e'), and I have not yet tested GCN
offloading.
