[all-commits] [llvm/llvm-project] 2a0837: [InstCombine] fix sub(add(X, Y), umin(Y, Z)) --> add(...

[ZCBing via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2a0837aab1489c88efb03784e34c4dc9f2e28302
      https://github.com/llvm/llvm-project/commit/2a0837aab1489c88efb03784e34c4dc9f2e28302
  Author: Chenbing Zheng <Chenbing.Zheng at streamcomputing.com>
  Date:   2022-05-13 (Fri, 13 May 2022)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
    M llvm/test/Transforms/InstCombine/sub-minmax.ll

  Log Message:
  -----------
  [InstCombine] fix sub(add(X,Y),umin(Y,Z)) --> add(X,usub.sat(Y,Z))

This patch fix bug left in D124503. We should do
sub(add(X,Z),umin(Y,Z)) --> add(X,usub.sat(Z,Y)) instead of
sub(add(X,Z),umin(Y,Z)) --> add(X,usub.sat(Y,Z)).

Reviewed By: spatel

Differential Revision: https://reviews.llvm.org/D125352