[PATCH] D111904: [RISCV] Lower fixed vector CTLZ_ZERO_UNDEF/CTTZ_ZERO_UNDEF by converting to FP and extracting the exponent.

[Craig Topper via Phabricator via llvm-commits]

craig.topper updated this revision to Diff 387325.
craig.topper added a comment.

Support scalable vectors.
Check legal types in RISCVTargetLowering constructor. Fixes unneeded vmerges.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D111904/new/

https://reviews.llvm.org/D111904

Files:
  llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/rvv/ctlz-sdnode.ll
  llvm/test/CodeGen/RISCV/rvv/cttz-sdnode.ll
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-ctlz.ll
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-cttz.ll

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