[all-commits] [llvm/llvm-project] cc2c45: [RISCV] Use SplatPat/SplatPat_simm5 to handle Pseu...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cc2c45dc54b324727a00be7218f387fcb53dd6c7
      https://github.com/llvm/llvm-project/commit/cc2c45dc54b324727a00be7218f387fcb53dd6c7
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2021-02-08 (Mon, 08 Feb 2021)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td
    M llvm/utils/TableGen/CodeGenDAGPatterns.cpp

  Log Message:
  -----------
  [RISCV] Use SplatPat/SplatPat_simm5 to handle PseudoVMV_V_X_/PseudoVMV_V_I_ selection as well.

This ensures that we'll match immediates consistently regardless
of whether we match them as a standalone splat or as part of
another operation.

While I was there I added complexities to the simm5/uimm5 patterns so
we didn't have to assume that the 1 on the non-immediate was lower
than what tablegen inferred.

I had to make a minor tweak to tablegen to fix one place that
didn't expect to see a ComplexPattern that wasn't a "leaf".

Reviewed By: frasercrmck

Differential Revision: https://reviews.llvm.org/D96199