1 ; RUN: opt < %s -analyze -iv-users | FileCheck %s
3 ; The value of %r is dependent on a polynomial iteration expression.
5 ; CHECK-LABEL: IV Users for loop %foo.loop
6 ; CHECK: {1,+,3,+,2}<%foo.loop>
7 define i64 @foo(i64 %n) {
12 %indvar = phi i64 [ 0, %entry ], [ %indvar.next, %foo.loop ]
13 %indvar.next = add i64 %indvar, 1
14 %c = icmp eq i64 %indvar.next, %n
15 br i1 %c, label %exit, label %foo.loop
18 %r = mul i64 %indvar.next, %indvar.next
22 ; PR15470: LSR miscompile. The test2 function should return '1'.
24 ; SCEV does not know how to denormalize chained recurrences, so make
25 ; sure they aren't marked as post-inc users.
27 ; CHECK-LABEL: IV Users for loop %test2.loop
28 ; CHECK: %sext.us = {0,+,(16777216 + (-16777216 * %sub.us)),+,33554432}<%test2.loop> in %f = ashr i32 %sext.us, 24
34 %inc1115.us = phi i32 [ 0, %entry ], [ %inc11.us, %test2.loop ]
35 %inc11.us = add nsw i32 %inc1115.us, 1
36 %cmp.us = icmp slt i32 %inc11.us, 2
37 br i1 %cmp.us, label %test2.loop, label %for.end
40 %tobool.us = icmp eq i32 %inc1115.us, 0
41 %sub.us = select i1 %tobool.us, i32 0, i32 0
42 %mul.us = shl i32 %inc1115.us, 24
43 %sub.cond.us = sub nsw i32 %inc1115.us, %sub.us
44 %sext.us = mul i32 %mul.us, %sub.cond.us
45 %f = ashr i32 %sext.us, 24