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from 7ac31f1e42f libstdc++: Add comments to __unicode::_Utf_iterator new c6676092318 s390: Add implicit zero extend for VLGV new df20aac4c66 s390: Adapt GPR<->VR costs new f9af5890fba s390: Rework signbit optab

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Summary of changes: gcc/config/s390/s390.cc | 16 ++- gcc/config/s390/s390.md | 83 ++++++++++- gcc/config/s390/vector.md | 60 +++++++- .../s390/isfinite-isinf-isnormal-signbit-2.c | 6 +- .../s390/isfinite-isinf-isnormal-signbit-3.c | 6 +- gcc/testsuite/gcc.target/s390/signbit-1.c | 40 ++++++ gcc/testsuite/gcc.target/s390/signbit-2.c | 40 ++++++ gcc/testsuite/gcc.target/s390/signbit-3.c | 152 +++++++++++++++++++++ gcc/testsuite/gcc.target/s390/signbit-4.c | 55 ++++++++ gcc/testsuite/gcc.target/s390/signbit-5.c | 35 +++++ gcc/testsuite/gcc.target/s390/signbit.h | 36 +++++ .../gcc.target/s390/vector/vlgv-zero-extend-1.c | 71 ++++++++++ 12 files changed, 588 insertions(+), 12 deletions(-) create mode 100644 gcc/testsuite/gcc.target/s390/signbit-1.c create mode 100644 gcc/testsuite/gcc.target/s390/signbit-2.c create mode 100644 gcc/testsuite/gcc.target/s390/signbit-3.c create mode 100644 gcc/testsuite/gcc.target/s390/signbit-4.c create mode 100644 gcc/testsuite/gcc.target/s390/signbit-5.c create mode 100644 gcc/testsuite/gcc.target/s390/signbit.h create mode 100644 gcc/testsuite/gcc.target/s390/vector/vlgv-zero-extend-1.c