[all-commits] [llvm/llvm-project] 511518: [RISCV] Teach normaliseSetCC to canonicalize X > -...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 51151828acad6b1e5b0719285ce7172506877fd1
      https://github.com/llvm/llvm-project/commit/51151828acad6b1e5b0719285ce7172506877fd1
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2021-03-12 (Fri, 12 Mar 2021)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/test/CodeGen/RISCV/select-cc.ll

  Log Message:
  -----------
  [RISCV] Teach normaliseSetCC to canonicalize X > -1 to X >= 0 and X < 1 to 0 >= X.

This allows the use of BGE with X0 instead of puting -1/1 in a
register.

Reviewed By: jrtc27

Differential Revision: https://reviews.llvm.org/D98542