[all-commits] [llvm/llvm-project] c91b3c: [RISCV] Fold (select_cc (setlt X, Y), 0, ne, trueV...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c91b3c9e63c3580348701a81a82740d84d2e5102
      https://github.com/llvm/llvm-project/commit/c91b3c9e63c3580348701a81a82740d84d2e5102
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2021-03-07 (Sun, 07 Mar 2021)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/test/CodeGen/RISCV/uadd_sat.ll
    M llvm/test/CodeGen/RISCV/uadd_sat_plus.ll
    M llvm/test/CodeGen/RISCV/usub_sat.ll
    M llvm/test/CodeGen/RISCV/usub_sat_plus.ll
    M llvm/test/CodeGen/RISCV/xaluo.ll

  Log Message:
  -----------
  [RISCV] Fold (select_cc (setlt X, Y), 0, ne, trueV, falseV) -> (select_cc X, Y, lt, trueV, falseV)

A setcc can be created during LegalizeDAG after select_cc has been
created. This combine will enable us to fold these late setccs.

Reviewed By: luismarques

Differential Revision: https://reviews.llvm.org/D98132