So it turns out the regression exposed by "Optimize env memory operations" is caused by an s390x host encoding error. This is the first time that we have had sufficient register pressure to use more than a few vector registers at the same time.
As such, the testcase itself is interesting, since nothing else in our testsuite generates translation blocks with quite so many vector insns with more than 16 simultaneously live values. r~ Richard Henderson (2): tcg/s390x: Fix encoding of VRIc, VRSa, VRSc insns tests/tcg/s390x: Import linux tools/testing/crypto/chacha20-s390 tests/tcg/s390x/chacha.c | 341 ++++++++++++ tcg/s390x/tcg-target.c.inc | 6 +- tests/tcg/s390x/Makefile.target | 4 + tests/tcg/s390x/chacha-vx.S | 914 ++++++++++++++++++++++++++++++++ 4 files changed, 1262 insertions(+), 3 deletions(-) create mode 100644 tests/tcg/s390x/chacha.c create mode 100644 tests/tcg/s390x/chacha-vx.S -- 2.34.1
