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      1 ; RUN: opt -early-cse -S < %s | FileCheck %s
      2 ; PR12231
      3 
      4 declare i32 @f()
      5 
      6 define i32 @fn() {
      7 entry:
      8   br label %lbl_1215
      9 
     10 lbl_1215:
     11   %ins34 = phi i32 [ %ins35, %xxx ], [ undef, %entry ]
     12   ret i32 %ins34
     13 
     14 xxx:
     15   %ins35 = call i32 @f()
     16   br label %lbl_1215
     17 }
     18 
     19 ; CHECK-LABEL: define i32 @fn(
     20