[all-commits] [llvm/llvm-project] d7b6fd: [InstCombine] Add additional icmp of select tests ...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d7b6fd47b223c3b5243973188a8598b1eecb1046
      https://github.com/llvm/llvm-project/commit/d7b6fd47b223c3b5243973188a8598b1eecb1046
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2022-05-06 (Fri, 06 May 2022)

  Changed paths:
    A llvm/test/Transforms/InstCombine/icmp-select.ll

  Log Message:
  -----------
  [InstCombine] Add additional icmp of select tests (NFC)


  Commit: 0863abe3ac47c281fdd35dc87d83c495cf741da0
      https://github.com/llvm/llvm-project/commit/0863abe3ac47c281fdd35dc87d83c495cf741da0
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2022-05-06 (Fri, 06 May 2022)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
    M llvm/test/Transforms/InstCombine/icmp-select.ll
    M llvm/test/Transforms/InstCombine/shift.ll

  Log Message:
  -----------
  [InstCombine] Fold icmp of select with non-constant operand

Try to push an icmp into a select even if the icmp operand isn't
constant - perform a generic SimplifyICmpInst instead.

This doesn't appear to impact compile-time much, and forming
logical and/or is generally profitable, as we have very good
support for them.


Compare: https://github.com/llvm/llvm-project/compare/1df36d561637...0863abe3ac47