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      1 ; RUN: opt < %s -instsimplify -S | FileCheck %s
      2 
      3 ; PR12189
      4 define i1 @test1(i32 %x) {
      5 ; CHECK-LABEL: @test1(
      6   br i1 true, label %a, label %b
      7 
      8 a:
      9   %aa = or i32 %x, 10
     10   br label %c
     11 
     12 b:
     13   %bb = or i32 %x, 10
     14   br label %c
     15 
     16 c:
     17   %cc = phi i32 [ %bb, %b ], [%aa, %a ]
     18   %d = urem i32 %cc, 2
     19   %e = icmp eq i32 %d, 0
     20   ret i1 %e
     21 ; CHECK: ret i1 %e
     22 }
     23