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from c5dba22c1db [DAGCombiner] Fix load-store forwarding of indexed loads. new c90bfa87155 [RISCV] Support .option relax and .option norelax new 789879d5be5 [CostModel] Add more realistic SK_ExtractSubvector generic costs.

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Summary of changes: include/llvm/CodeGen/BasicTTIImpl.h | 25 +++++ lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp | 43 +++++++- lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.cpp | 99 +---------------- lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.h | 118 +++++++++++++++++++++ lib/Target/RISCV/MCTargetDesc/RISCVELFStreamer.cpp | 2 + lib/Target/RISCV/MCTargetDesc/RISCVELFStreamer.h | 2 + .../RISCV/MCTargetDesc/RISCVTargetStreamer.cpp | 8 ++ .../RISCV/MCTargetDesc/RISCVTargetStreamer.h | 4 + lib/Transforms/Vectorize/LoopVectorize.cpp | 3 +- .../CostModel/X86/shuffle-extract_subvector.ll | 56 +++++----- test/CodeGen/RISCV/fixups-relax-diff.ll | 20 ++++ test/CodeGen/RISCV/option-norelax.ll | 16 +++ test/CodeGen/RISCV/option-relax.ll | 16 +++ test/MC/RISCV/option-invalid.s | 2 +- test/MC/RISCV/option-relax.s | 66 ++++++++++++ 15 files changed, 351 insertions(+), 129 deletions(-) create mode 100644 lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.h create mode 100644 test/CodeGen/RISCV/fixups-relax-diff.ll create mode 100644 test/CodeGen/RISCV/option-norelax.ll create mode 100644 test/CodeGen/RISCV/option-relax.ll create mode 100644 test/MC/RISCV/option-relax.s