1 ; RUN: opt -indvars -S < %s | FileCheck %s
3 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
5 ; indvars will try to replace %b.0.lcssa with %t.1. If it does this,
8 @c = external global i32, align 4
15 for.cond1.preheader: ; preds = %for.body
16 %0 = load i32, i32* @c, align 4
17 br i1 undef, label %for.cond1.us.preheader, label %for.cond1
19 for.cond1.us.preheader: ; preds = %for.cond1.preheader
20 br label %for.cond1.us
22 for.cond1.us: ; preds = %for.cond1.us, %for.cond1.us.preheader
23 br label %for.cond1.us
25 for.body: ; preds = %for.body, %entry
26 br i1 undef, label %for.body, label %for.cond1.preheader
28 for.cond1: ; preds = %for.cond1.preheader
29 br i1 true, label %for.body9.lr.ph, label %for.cond13.preheader
31 for.body9.lr.ph: ; preds = %for.cond1
32 br i1 undef, label %for.body9.us.preheader, label %for.body9
34 for.body9.us.preheader: ; preds = %for.body9.lr.ph
35 br label %for.body9.us
37 for.body9.us: ; preds = %for.body9.us, %for.body9.us.preheader
38 br label %for.body9.us
40 for.cond13.preheader: ; preds = %for.body9, %for.cond1
41 %b.0.lcssa = phi i32 [ %0, %for.body9 ], [ 0, %for.cond1 ]
44 for.body9: ; preds = %for.body9.lr.ph
45 br label %for.cond13.preheader
47 for.cond13: ; preds = %for.cond13, %for.cond13.preheader
48 %d.1 = phi i32 [ %t.1, %for.cond13 ], [ %0, %for.cond13.preheader ]
49 %t.1 = phi i32 [ %b.0.lcssa, %for.cond13 ], [ %0, %for.cond13.preheader ]
50 br i1 undef, label %for.cond18.preheader, label %for.cond13
52 for.cond18.preheader: ; preds = %for.cond13
55 for.cond18: ; preds = %for.cond18, %for.cond18.preheader
56 %b.1 = phi i32 [ %xor, %for.cond18 ], [ %b.0.lcssa, %for.cond18.preheader ]
57 %add = add nsw i32 %b.1, %d.1
58 %xor = xor i32 %add, %b.1