[all-commits] [llvm/llvm-project] ff17da: [InstCombine] Push negation through multiply (PR44...

[Nikita Popov via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: ff17da3f75b4825f71e81e1caa2e5084d500a1a1
      https://github.com/llvm/llvm-project/commit/ff17da3f75b4825f71e81e1caa2e5084d500a1a1
  Author: Nikita Popov <nikita.ppv at gmail.com>
  Date:   2020-01-31 (Fri, 31 Jan 2020)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
    M llvm/test/Transforms/InstCombine/mul.ll
    M llvm/test/Transforms/InstCombine/sub.ll

  Log Message:
  -----------
  [InstCombine] Push negation through multiply (PR44234)

Fixes https://bugs.llvm.org/show_bug.cgi?id=44234 by adding
multiply support to freelyNegateValue(). Only one of the operands
needs to be negatible, so this still fits within the framework.

Differential Revision: https://reviews.llvm.org/D73410