1; RUN: opt < %s -analyze -iv-users
2; RUN: opt < %s -passes='print<ivusers>'
3; PR9633: Tests that SCEV handles the mul.i2 recurrence being folded to
4; constant zero.
5
6define signext i8 @func_14(i8 signext %p_18) nounwind readnone ssp {
7entry:
8  br label %for.inc
9
10for.inc:
11  %p_17.addr.012 = phi i32 [ 0, %entry ], [ %add, %for.inc ]
12  %add = add nsw i32 %p_17.addr.012, 1
13  br i1 false, label %for.inc, label %for.cond
14
15for.cond:
16  %tobool.i = icmp ult i32 %add, 8192
17  %shl.i = select i1 %tobool.i, i32 13, i32 0
18  %shl.left.i = shl i32 %add, %shl.i
19  %conv.i4 = trunc i32 %shl.left.i to i8
20  br i1 undef, label %for.inc9, label %if.then
21
22for.inc9:
23  %p_18.addr.011 = phi i8 [ %add12, %for.inc9 ], [ %p_18, %for.cond ]
24  %add12 = add i8 %p_18.addr.011, 1
25  %mul.i2 = mul i8 %add12, %conv.i4
26  %mul.i2.lobit = lshr i8 %mul.i2, 7
27  %lor.ext.shr.i = select i1 undef, i8 %mul.i2.lobit, i8 %mul.i2
28  %tobool = icmp eq i8 %lor.ext.shr.i, 0
29  br i1 %tobool, label %for.inc9, label %if.then
30
31if.then:
32  ret i8 0
33
34}
35