[all-commits] [llvm/llvm-project] f0393d: [RISCV] Add tests for suboptimal handling of negat...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f0393deb336737b9ab9112089ea29866dd20da03
      https://github.com/llvm/llvm-project/commit/f0393deb336737b9ab9112089ea29866dd20da03
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2021-07-11 (Sun, 11 Jul 2021)

  Changed paths:
    M llvm/test/CodeGen/RISCV/xaluo.ll

  Log Message:
  -----------
  [RISCV] Add tests for suboptimal handling of negative constants for i32 uaddo/usubo on RV64. NFC

We end up zero extending constants when we promote to i64. We
should sign extend instead to allow use of addiw or improve
constant materialization.