1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -basic-aa -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.
5 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
7 define internal i32 @pr31491() {
8 ; CHECK-LABEL: @pr31491(
10 ; CHECK-NEXT: br label %bb7
12 ; CHECK-NEXT: [[TMP:%.*]] = phi i8* [ [[TMP:%.*]]11, %bb10 ], [ undef, %bb5 ]
13 ; CHECK-NEXT: br label %bb10
15 ; CHECK-NEXT: [[TMP11:%.*]] = tail call i8* @patatino(i8* [[TMP]])
16 ; CHECK-NEXT: br label %bb7
21 bb7: ; preds = %bb10, %bb5
22 %tmp = phi i8* [ %tmp11, %bb10 ], [ undef, %bb5 ]
26 %tmp11 = tail call i8* @patatino(i8* %tmp)
30 declare i8* @patatino(i8*)