[all-commits] [llvm/llvm-project] 8c4937: [RISCV] Special case sign extended scalars when ty...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8c4937b33fe9090546f6dc834e174177075b5084
      https://github.com/llvm/llvm-project/commit/8c4937b33fe9090546f6dc834e174177075b5084
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2022-03-21 (Mon, 21 Mar 2022)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/test/CodeGen/RISCV/rvv/vadd.ll

  Log Message:
  -----------
  [RISCV] Special case sign extended scalars when type legalizing nxvXi64 .vx instrinsics on RV32.

On RV32, we need to type legalize i64 scalar arguments to intrinsics.
We usually do this by splatting the value into a vector separately.
If the scalar happens to be sign extended, we can continue using a .vx
intrinsic.

We already special cased sign extended constants, this extends it
to any sign extended value.

I've only added tests for one case of vadd. Most intrinsics go
through the same check. I can add more tests if we're concerned.

Differential Revision: https://reviews.llvm.org/D122186


  Commit: 19de2e8db611b8a2348586899b0a823e51423e82
      https://github.com/llvm/llvm-project/commit/19de2e8db611b8a2348586899b0a823e51423e82
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2022-03-21 (Mon, 21 Mar 2022)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp

  Log Message:
  -----------
  [RISCV] Remove stray slash from comment. NFC


  Commit: d4aeb5000ff49933be64a7c5423e8760b70d4cbd
      https://github.com/llvm/llvm-project/commit/d4aeb5000ff49933be64a7c5423e8760b70d4cbd
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2022-03-21 (Mon, 21 Mar 2022)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp

  Log Message:
  -----------
  [RISCV] Simplify some code. NFC


Compare: https://github.com/llvm/llvm-project/compare/b40f420c2b64...d4aeb5000ff4