1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -passes=instsimplify -S < %s | FileCheck %s
3
4define void @foo() nounwind {
5; CHECK-LABEL: @foo(
6; CHECK-NEXT:    br i1 undef, label [[TMP1:%.*]], label [[TMP2:%.*]]
7; CHECK:       1:
8; CHECK-NEXT:    br label [[TMP1]]
9; CHECK:       2:
10; CHECK-NEXT:    ret void
11;
12  br i1 undef, label %1, label %4
13
14; <label>:1                                       ; preds = %1, %0
15  %2 = phi i32 [ %3, %1 ], [ undef, %0 ]
16  %3 = sub i32 0, undef
17  br label %1
18
19; <label>:4                                       ; preds = %0
20  ret void
21}
22