[PATCH] D141599: [RISCV] Generalize performFP_TO_INTCombine to vectors

[Luke Lau via Phabricator via llvm-commits]

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Like in the scalar domain, combine calls to (fp_to_int (ftrunc X)) on
scalable and fixed-length vectors into a single vfcvt instruction.
For truncating rounds, the static vfcvt.rtz rounding mode is used.
Otherwise use the VFCVT_RM_ variants to set the rounding mode
dynamically.
Closes #56737


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141599

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/lib/Target/RISCV/RISCVISelLowering.h
  llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td
  llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td
  llvm/test/CodeGen/RISCV/rvv/double-round-conv.ll
  llvm/test/CodeGen/RISCV/rvv/float-round-conv.ll

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