1; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
2
3define void @f(i1 %c) {
4; CHECK-LABEL: Classifying expressions for: @f
5entry:
6  %start = select i1 %c, i32 100, i32 0
7  %step =  select i1 %c, i32 -1,  i32 1
8  br label %loop
9
10loop:
11  %iv = phi i32 [ %start, %entry ], [ %iv.dec, %loop ]
12  %iv.tc = phi i32 [ 0, %entry ], [ %iv.tc.inc, %loop ]
13  %iv.tc.inc = add i32 %iv.tc, 1
14  %iv.dec = add nsw i32 %iv, %step
15  %iv.sext = sext i32 %iv to i64
16; CHECK:  %iv.sext = sext i32 %iv to i64
17; CHECK-NEXT:  -->  {(sext i32 %start to i64),+,(sext i32 %step to i64)}<nsw><%loop>
18  %be = icmp ne i32 %iv.tc.inc, 100
19  br i1 %be, label %loop, label %leave
20
21leave:
22  ret void
23}
24