1 ; RUN: opt -passes=loop-unroll,loop-simplify -S < %s | FileCheck %s
3 ; This test is one of the tests of PR33494. Its compilation takes
4 ; excessive time if we don't mark visited nodes while looking for
5 ; constants in SCEV expression trees.
7 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
8 target triple = "x86_64-unknown-linux-gnu"
10 define void @test_01(ptr nocapture %a) local_unnamed_addr {
12 ; CHECK-LABEL: @test_01(
15 %arrayidx = getelementptr inbounds i32, ptr %a, i64 96
16 %arrayidx.promoted51 = load i32, ptr %arrayidx, align 1
19 while.body: ; preds = %entry, %while.end29
20 %0 = phi i32 [ %arrayidx.promoted51, %entry ], [ %7, %while.end29 ]
21 %cmp46 = icmp eq i32 %0, 1
22 %conv47 = zext i1 %cmp46 to i32
24 %2 = icmp ult i32 %1, 3
25 %div48 = select i1 %2, i32 %0, i32 0
26 %cmp349 = icmp sgt i32 %div48, %conv47
27 br i1 %cmp349, label %while.body4.lr.ph, label %while.end29
29 while.body4.lr.ph: ; preds = %while.body
32 while.body4: ; preds = %while.body4.lr.ph, %while.end28
33 %3 = phi i32 [ %0, %while.body4.lr.ph ], [ %mul17.lcssa, %while.end28 ]
34 br label %while.body13
36 while.body13: ; preds = %while.body4, %while.end.split
37 %mul1745 = phi i32 [ %3, %while.body4 ], [ %mul17, %while.end.split ]
38 %4 = phi i32 [ 15872, %while.body4 ], [ %add, %while.end.split ]
39 %mul = mul nsw i32 %mul1745, %mul1745
40 %mul17 = mul nsw i32 %mul, %mul1745
41 %cmp22 = icmp eq i32 %4, %mul17
42 br i1 %cmp22, label %while.body13.split, label %while.end.split
44 while.body13.split: ; preds = %while.body13
45 br label %while.cond19
47 while.cond19: ; preds = %while.cond19, %while.body13.split
48 br label %while.cond19
50 while.end.split: ; preds = %while.body13
51 %add = shl nsw i32 %4, 1
52 %tobool12 = icmp eq i32 %add, 0
53 br i1 %tobool12, label %while.end28, label %while.body13
55 while.end28: ; preds = %while.end.split
56 %add.lcssa = phi i32 [ %add, %while.end.split ]
57 %mul17.lcssa = phi i32 [ %mul17, %while.end.split ]
58 %cmp = icmp eq i32 %mul17.lcssa, 1
59 %conv = zext i1 %cmp to i32
60 %5 = add i32 %mul17.lcssa, 1
61 %6 = icmp ult i32 %5, 3
62 %div = select i1 %6, i32 %mul17.lcssa, i32 0
63 %cmp3 = icmp sgt i32 %div, %conv
64 br i1 %cmp3, label %while.body4, label %while.cond1.while.end29_crit_edge
66 while.cond1.while.end29_crit_edge: ; preds = %while.end28
67 %.lcssa = phi i32 [ %mul17.lcssa, %while.end28 ]
68 %add.lcssa50.lcssa = phi i32 [ %add.lcssa, %while.end28 ]
69 store i32 %add.lcssa50.lcssa, ptr %a, align 4
72 while.end29: ; preds = %while.cond1.while.end29_crit_edge, %while.body
73 %7 = phi i32 [ %.lcssa, %while.cond1.while.end29_crit_edge ], [ %0, %while.body ]