[PATCH] D112986: [WIP][RISCV] Restrict zvamo, zvlsseg with zve macro-s

[Yueh-Ting Chen via Phabricator via cfe-commits]

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The `zve` extension specifies the maximum EEW for both integer and floating
point mode - defined by macro `__riscv_v_max_eew` and `__riscv_v_max_eew_fp`.
This commit restricts the functions in riscv_vector.h by the zve defined
macro-s.

Alongside this commit also changes the RISCVExtension in `RISCVVEmitter.cpp`
from type `uint8_t` to `uint16_t`, and add type alignment to it.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D112986

Files:
  clang/utils/TableGen/RISCVVEmitter.cpp
  llvm/lib/Target/RISCV/RISCVInstrInfoV.td
  llvm/test/MC/RISCV/rvv/zvamo.s
  llvm/test/MC/RISCV/rvv/zvlsseg.s

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