[all-commits] [llvm/llvm-project] 595544: [RISCV] Use QC_E_ADDI to improve codegen for icmp ...

[Sudharsan Veeravalli via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 595544b79db64ff03d55ce21ed19bfe8993c5cd5
      https://github.com/llvm/llvm-project/commit/595544b79db64ff03d55ce21ed19bfe8993c5cd5
  Author: Sudharsan Veeravalli <quic_svs at quicinc.com>
  Date:   2025-05-13 (Tue, 13 May 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
    M llvm/test/CodeGen/RISCV/i32-icmp.ll

  Log Message:
  -----------
  [RISCV] Use QC_E_ADDI to improve codegen for icmp {eq, ne} with a constant (#139558)

Use the QC_E_ADDI instruction when the constant is not a signed 12 bit
value but is a signed 26 bit one. Don't use it if a single LUI
instruction can be used instead.



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