1; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
2
3declare i1 @use(i64)
4
5define void @f_0() {
6; CHECK-LABEL: Classifying expressions for: @f_0
7
8; CHECK:  %iv = phi i32 [ 0, %entry ], [ %iv.inc.nowrap, %be ]
9; CHECK-NEXT: -->  {0,+,1}<nuw><nsw><%loop>
10; CHECK: %iv.inc.maywrap = add i32 %iv, 1
11; CHECK-NEXT: -->  {1,+,1}<nuw><%loop>
12; CHECK:  %iv.inc.maywrap.sext = sext i32 %iv.inc.maywrap to i64
13; CHECK-NEXT:  -->  (sext i32 {1,+,1}<nuw><%loop> to i64)
14entry:
15  br label %loop
16
17loop:
18  %iv = phi i32 [ 0, %entry ], [ %iv.inc.nowrap, %be ]
19  %iv.inc.maywrap = add i32 %iv, 1
20  %iv.inc.maywrap.sext = sext i32 %iv.inc.maywrap to i64
21  %cond0 = call i1 @use(i64 %iv.inc.maywrap.sext)
22  br i1 %cond0, label %be, label %leave
23
24be:
25  %iv.inc.nowrap = add nsw i32 %iv, 1
26  %be.cond = call i1 @use(i64 0) ;; Get an unanalyzable value
27  br i1 %be.cond, label %loop, label %leave
28
29leave:
30  ret void
31}
32