File: negation1.ll

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llvm-toolchain-21 1%3A21.1.6-3
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=reassociate,instcombine -S | FileCheck %s

; Test that we can turn things like A*B + X - A*B -> X.

define i32 @test1(i32 %a, i32 %b, i32 %x) {
; CHECK-LABEL: @test1(
; CHECK-NEXT:    ret i32 [[X:%.*]]
;
  %c = mul i32 %a, %b
  %d = add i32 %c, %x
  %c1 = mul i32 %a, %b
  %f = sub i32 %d, %c1
  ret i32 %f
}