[all-commits] [llvm/llvm-project] d36096: [RISCV] Add regalloc hints for Zcb instructions. (...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d360963aaa90710752d684035404db80c3dc1645
      https://github.com/llvm/llvm-project/commit/d360963aaa90710752d684035404db80c3dc1645
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-01-23 (Tue, 23 Jan 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVRegisterInfo.cpp
    A llvm/test/CodeGen/RISCV/zcb-regalloc-hints.ll

  Log Message:
  -----------
  [RISCV] Add regalloc hints for Zcb instructions. (#78949)

This hints the register allocator to use the same register for source
and destination to enable more compression.