[all-commits] [llvm/llvm-project] f8f1b2: [RISCV] Don't create LMUL=8 pseudo instructions fo...

[Craig Topper via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: f8f1b20e6b30624d2c0d18dc6a2d61643650d0c4
      https://github.com/llvm/llvm-project/commit/f8f1b20e6b30624d2c0d18dc6a2d61643650d0c4
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2021-01-21 (Thu, 21 Jan 2021)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td

  Log Message:
  -----------
  [RISCV] Don't create LMUL=8 pseudo instructions for ternary widening arithmetic instructions

These instructions produce 2*SEW result so the input can't have
an LMUL=8 or the result would need a non-existant LMUL=16. So
only create pseudos for LMUL up to 4.

Differential Revision: https://reviews.llvm.org/D95189