https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111969
Bug ID: 111969
Summary: RISC-V rv32gcv: 12 grouped flaky failures
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: testsuite
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick at rivosinc dot com
Target Milestone: ---
These 12 testcases are flaky on _only_ the rv32gcv glibc target. They either
all fail or all pass as a group.
FAIL: gcc.dg/nextafter-2.c execution test
FAIL: gfortran.dg/default_format_2.f90 -O0 execution test
FAIL: gfortran.dg/default_format_2.f90 -O1 execution test
FAIL: gfortran.dg/default_format_2.f90 -O2 execution test
FAIL: gfortran.dg/default_format_2.f90 -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions execution test
FAIL: gfortran.dg/default_format_2.f90 -O3 -g execution test
FAIL: gfortran.dg/default_format_2.f90 -Os execution test
FAIL: gfortran.dg/default_format_denormal_2.f90 -O0 execution test
FAIL: gfortran.dg/default_format_denormal_2.f90 -O1 execution test
FAIL: gfortran.dg/default_format_denormal_2.f90 -O2 execution test
FAIL: gfortran.dg/default_format_denormal_2.f90 -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions execution test
FAIL: gfortran.dg/default_format_denormal_2.f90 -O3 -g execution test
FAIL: gfortran.dg/default_format_denormal_2.f90 -Os execution test
FAIL: gfortran.dg/ieee/dec_math_1.f90 -O0 execution test
FAIL: gfortran.dg/ieee/dec_math_1.f90 -O1 execution test
FAIL: gfortran.dg/ieee/dec_math_1.f90 -O2 execution test
FAIL: gfortran.dg/ieee/dec_math_1.f90 -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions execution test
FAIL: gfortran.dg/ieee/dec_math_1.f90 -O3 -g execution test
FAIL: gfortran.dg/ieee/dec_math_1.f90 -Os execution test
FAIL: gfortran.dg/ieee/large_1.f90 -O0 execution test
FAIL: gfortran.dg/ieee/large_2.f90 -O0 execution test
FAIL: gfortran.dg/ieee/large_2.f90 -O1 execution test
FAIL: gfortran.dg/ieee/large_2.f90 -O2 execution test
FAIL: gfortran.dg/ieee/large_2.f90 -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions execution test
FAIL: gfortran.dg/ieee/large_2.f90 -O3 -g execution test
FAIL: gfortran.dg/ieee/large_2.f90 -Os execution test
FAIL: gfortran.dg/intrinsic_pack_6.f90 -O2 execution test
FAIL: gfortran.dg/intrinsic_pack_6.f90 -O3 -g execution test
FAIL: gfortran.dg/large_real_kind_2.F90 -O0 execution test
FAIL: gfortran.dg/round_4.f90 -O0 execution test
FAIL: gfortran.dg/zero_sized_3.f90 -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions execution test
FAIL: gfortran.fortran-torture/execute/intrinsic_count.f90 execution, -O2
-fomit-frame-pointer -finline-functions -funroll-loops
FAIL: gfortran.fortran-torture/execute/intrinsic_matmul.f90 execution, -O2
FAIL: gfortran.fortran-torture/execute/intrinsic_matmul.f90 execution, -O2
-fbounds-check
FAIL: gfortran.fortran-torture/execute/intrinsic_matmul.f90 execution, -O2
-fomit-frame-pointer -finline-functions
FAIL: gfortran.fortran-torture/execute/intrinsic_matmul.f90 execution, -O2
-fomit-frame-pointer -finline-functions -funroll-loops
FAIL: gfortran.fortran-torture/execute/intrinsic_matmul.f90 execution, -O3 -g
FAIL: gfortran.fortran-torture/execute/intrinsic_sum.f90 execution, -O2
-fomit-frame-pointer -finline-functions -funroll-loops
r14-4098-gbdb7d85dde5 is the first time the CI observed these failures. It's
also relatively close to when we bumped the CI to QEMU v8.1.0 (~9 days after).
It can clearly be seen on the risc-v CI dashboard:
https://patrick-rivos.github.io/gcc-postcommit-ci/gcv where the fortran
failures for the rv32gcv target goes from ~23 -> ~15 failures and back again.
I'm investigating locally but not making much headway. Thought I'd chronicle
what I learn in a bugzilla in case anyone else has insight into what this might
be.
Marking this as a testsuite framework issue as that's my best guess currently.
I'll keep this issue updated as I investigate more.
