1; REQUIRES: asserts
2; RUN: opt < %s -indvars -disable-output -stats -info-output-file - | FileCheck %s
3; Check that IndVarSimplify is not creating unnecessary canonical IVs
4; that will never be used.
5; CHECK-NOT: indvars
6
7target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
8
9@ue = external global i64
10
11define i32 @foo() nounwind {
12entry:
13	br label %bb38.i
14
15bb14.i27:
16	%t0 = load i64, i64* @ue, align 8
17	%t1 = sub i64 %t0, %i.0.i35
18	%t2 = add i64 %t1, 1
19	br i1 undef, label %bb15.i28, label %bb19.i31
20
21bb15.i28:
22	br label %bb19.i31
23
24bb19.i31:
25	%y.0.i = phi i64 [ %t2, %bb15.i28 ], [ %t2, %bb14.i27 ]
26	br label %bb35.i
27
28bb35.i:
29	br i1 undef, label %bb37.i, label %bb14.i27
30
31bb37.i:
32	%t3 = add i64 %i.0.i35, 1
33	br label %bb38.i
34
35bb38.i:
36	%i.0.i35 = phi i64 [ 1, %entry ], [ %t3, %bb37.i ]
37	br label %bb35.i
38}
39