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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -basicaa -newgvn -S | FileCheck %s
3;; Test that we do not infinite loop on this testcase, and that we do not try
4;; to replace the phi node argument with the result of the phi node.
5target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
6
7define internal i32 @pr31491() {
8; CHECK-LABEL: @pr31491(
9; CHECK-NEXT:  bb5:
10; CHECK-NEXT:    br label %bb7
11; CHECK:       bb7:
12; CHECK-NEXT:    [[TMP:%.*]] = phi i8* [ [[TMP:%.*]]11, %bb10 ], [ undef, %bb5 ]
13; CHECK-NEXT:    br label %bb10
14; CHECK:       bb10:
15; CHECK-NEXT:    [[TMP11:%.*]] = tail call i8* @patatino(i8* [[TMP]])
16; CHECK-NEXT:    br label %bb7
17;
18bb5:
19  br label %bb7
20
21bb7:                                              ; preds = %bb10, %bb5
22  %tmp = phi i8* [ %tmp11, %bb10 ], [ undef, %bb5 ]
23  br label %bb10
24
25bb10:                                             ; preds = %bb7
26  %tmp11 = tail call i8* @patatino(i8* %tmp)
27  br label %bb7
28}
29
30declare i8* @patatino(i8*)
31