[Bug target/110577] New: s390x: Some tests fail with -march=z13

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110577

            Bug ID: 110577
           Summary: s390x: Some tests fail with -march=z13
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mpolacek at gcc dot gnu.org
  Target Milestone: ---

These tests:

gcc.dg/vect/vect-cond-reduc-4.c
g++.dg/vect/pr89653.cc
gfortran.dg/vect/fast-math-pr38968.f90
gfortran.dg/vect/fast-math-rnflow-trs2a2.f90
gfortran.dg/vect/pr62283.f 
gcc.target/s390/vector/partial/s390-vec-length-epil-1.c
gcc.target/s390/vector/partial/s390-vec-length-epil-2.c
gcc.target/s390/vector/partial/s390-vec-length-epil-3.c
gcc.target/s390/vector/partial/s390-vec-length-full-1.c
gcc.target/s390/vector/partial/s390-vec-length-full-2.c
gcc.target/s390/vector/partial/s390-vec-length-full-3.c

work with -march=z14, but fail with -march=z13.  E.g.,

# gcc vect-cond-reduc-4.c -fdiagnostics-plain-output --param
min-vect-loop-bound=1 --param max-unrolled-insns=200 --param max-unroll-times=8
--param max-completely-peeled-insns=200 --param max-completely-peel-times=16
-march=z13 -mzarch -ftree-vectorize -fno-tree-loop-distribute-patterns
-fno-vect-cost-model -fno-common -O2 -fdump-tree-vect-details --param
vect-epilogues-nomask=0 -march=z14 ; grep "LOOP VECTORIZED"
a-vect-cond-reduc-4.c.172t.vect
vect-cond-reduc-4.c:19:21: note:  LOOP VECTORIZED
vect-cond-reduc-4.c:19:21: note:  LOOP VECTORIZED
# gcc vect-cond-reduc-4.c -fdiagnostics-plain-output --param
min-vect-loop-bound=1 --param max-unrolled-insns=200 --param max-unroll-times=8
--param max-completely-peeled-insns=200 --param max-completely-peel-times=16
-march=z13 -mzarch -ftree-vectorize -fno-tree-loop-distribute-patterns
-fno-vect-cost-model -fno-common -O2 -fdump-tree-vect-details --param
vect-epilogues-nomask=0 -march=z13 ; grep "LOOP VECTORIZED"
a-vect-cond-reduc-4.c.172t.vect
#

or

# gcc s390-vec-length-epil-1.c -fdiagnostics-plain-output  -O2 -ftree-vectorize
-fno-vect-cost-model -fno-unroll-loops -fno-trapping-math
--param=vect-partial-vector-usage=1 --param=min-vect-loop-bound=0
-ffat-lto-objects -fno-ident -S -march=z13 -o s390-vec-length-epil-1.s
# grep vll s390-vec-length-epil-1.s | wc -l
12
# grep vstl s390-vec-length-epil-1.s | wc -l
6
# gcc s390-vec-length-epil-1.c -fdiagnostics-plain-output  -O2 -ftree-vectorize
-fno-vect-cost-model -fno-unroll-loops -fno-trapping-math
--param=vect-partial-vector-usage=1 --param=min-vect-loop-bound=0
-ffat-lto-objects -fno-ident -S -march=z14 -o s390-vec-length-epil-1.s
# grep vll s390-vec-length-epil-1.s | wc -l
14
# grep vstl s390-vec-length-epil-1.s | wc -l
7