[RISCV] Use llvm::bit_width (NFC)
authorKazu Hirata <kazu@google.com>
Sat, 21 Jan 2023 18:54:09 +0000 (10:54 -0800)
committerKazu Hirata <kazu@google.com>
Sat, 21 Jan 2023 18:54:09 +0000 (10:54 -0800)
commit8666c201eb2ac1651950a62b441d8f325f2ab06e
tree97270073f7efa7b935bc8cc144847b9840afbdde
parent8d929d1cdd5246f10df6489948a11165242e8871
[RISCV] Use llvm::bit_width (NFC)

I've verified that the arguments to llvm::bit_width are all of
uint64_t with:

  static_assert(std::is_same_v<uint64_t, decltype(Mask)>)
llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
llvm/lib/Target/RISCV/RISCVISelLowering.cpp