1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -passes=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 ptr [ [[TMP11:%.*]], [[BB10:%.*]] ], [ undef, [[BB5:%.*]] ]
13 ; CHECK-NEXT: br label [[BB10]]
15 ; CHECK-NEXT: [[TMP11]] = tail call ptr @patatino(ptr [[TMP]])
16 ; CHECK-NEXT: br label [[BB7]]
21 bb7: ; preds = %bb10, %bb5
22 %tmp = phi ptr [ %tmp11, %bb10 ], [ undef, %bb5 ]
26 %tmp11 = tail call ptr @patatino(ptr %tmp)
30 declare ptr @patatino(ptr)