[Bug target/112853] RISC-V: RVV: SPEC2017 525.x264 regression

[rdapp at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112853

--- Comment #6 from Robin Dapp <rdapp at gcc dot gnu.org> ---
I indeed see more failures with _zvl128b, vlen=256 (than with _zvl128b,
vlen=128):

FAIL: gcc.dg/vect/pr66251.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/pr66251.c execution test
FAIL: gcc.dg/vect/pr66253.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/pr66253.c execution test
FAIL: gcc.dg/vect/slp-46.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/slp-46.c execution test
FAIL: gcc.dg/vect/vect-alias-check-10.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-alias-check-10.c execution test
FAIL: gcc.dg/vect/vect-alias-check-11.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-alias-check-11.c execution test
FAIL: gcc.dg/vect/vect-alias-check-12.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-alias-check-12.c execution test
FAIL: gcc.dg/vect/vect-alias-check-18.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-alias-check-18.c execution test

FAIL: gfortran.dg/array_constructor_4.f90   -O1  execution test
FAIL: gfortran.dg/associate_18.f08   -O1  execution test
FAIL: gfortran.dg/vector_subscript_8.f90   -O1  execution test
FAIL: gfortran.dg/vector_subscript_8.f90   -O2  execution test
FAIL: gfortran.dg/vector_subscript_8.f90   -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/vector_subscript_8.f90   -O3 -g  execution test

FAIL: gfortran.fortran-torture/execute/in-pack.f90 execution,  -O1
FAIL: gfortran.fortran-torture/execute/in-pack.f90 execution,  -O2
FAIL: gfortran.fortran-torture/execute/in-pack.f90 execution,  -O2
-fbounds-check
FAIL: gfortran.fortran-torture/execute/in-pack.f90 execution,  -O2
-fomit-frame-pointer -finline-functions
FAIL: gfortran.fortran-torture/execute/in-pack.f90 execution,  -O2
-fomit-frame-pointer -finline-functions -funroll-loops
FAIL: gfortran.fortran-torture/execute/in-pack.f90 execution,  -O3 -g

Maybe those can give a hint.