1; RUN: opt < %s -loop-reduce -S
2; PR11950: isHighCostExpansion crashes on ConstExpr
3;
4; The crash happened during IVChain analysis (CollectChains). We don't
5; really care how LSR decides to transform this loop, so we don't
6; check it. As long as the analysis doesn't crash we're ok.
7target datalayout = "e-p:64:64:64-n32:64"
8
9%struct.this_structure_s.0.5 = type { [6144 x [8 x i32]], [6144 x [8 x i32]], [6147 x [4 x i32]], [8 x i32], [2 x i8*], [2 x i8*], [6144 x i8], [6144 x i32], [6144 x i32], [4 x [4 x i8]] }
10
11define internal fastcc void @someFunction(%struct.this_structure_s.0.5* nocapture %scratch, i32 %stage, i32 %cbSize) nounwind {
12entry:
13  %0 = getelementptr inbounds %struct.this_structure_s.0.5* %scratch, i32 0, i32 4, i32 %stage
14  %1 = load i8** %0, align 4
15  %2 = getelementptr inbounds %struct.this_structure_s.0.5* %scratch, i32 0, i32 5, i32 %stage
16  %3 = load i8** %2, align 4
17  %4 = getelementptr inbounds %struct.this_structure_s.0.5* %scratch, i32 0, i32 2, i32 0, i32 0
18  %tmp11 = shl i32 %stage, 1
19  %tmp1325 = or i32 %tmp11, 1
20  br label %__label_D_1608
21
22__label_D_1608:                                   ; preds = %__label_D_1608, %entry
23  %i.12 = phi i32 [ 0, %entry ], [ %10, %__label_D_1608 ]
24  %tmp = shl i32 %i.12, 2
25  %lvar_g.13 = getelementptr i32* %4, i32 %tmp
26  %tmp626 = or i32 %tmp, 1
27  %scevgep = getelementptr i32* %4, i32 %tmp626
28  %tmp727 = or i32 %tmp, 2
29  %scevgep8 = getelementptr i32* %4, i32 %tmp727
30  %tmp928 = or i32 %tmp, 3
31  %scevgep10 = getelementptr i32* %4, i32 %tmp928
32  %scevgep12 = getelementptr %struct.this_structure_s.0.5* %scratch, i32 0, i32 9, i32 %tmp11, i32 %i.12
33  %scevgep14 = getelementptr %struct.this_structure_s.0.5* %scratch, i32 0, i32 9, i32 %tmp1325, i32 %i.12
34  %5 = load i8* %scevgep12, align 1
35  %6 = sext i8 %5 to i32
36  %7 = load i8* %scevgep14, align 1
37  %8 = sext i8 %7 to i32
38  store i32 0, i32* %lvar_g.13, align 4
39  store i32 %8, i32* %scevgep, align 4
40  store i32 %6, i32* %scevgep8, align 4
41  %9 = add nsw i32 %8, %6
42  store i32 %9, i32* %scevgep10, align 4
43  %10 = add nsw i32 %i.12, 1
44  %exitcond = icmp eq i32 %10, 3
45  br i1 %exitcond, label %return, label %__label_D_1608
46
47return:                                           ; preds = %__label_D_1608
48  ret void
49}
50