1 ; RUN: llc -march=hexagon -O3 < %s
4 ; Test that the compiler doesn't assert when attempting to find a
5 ; loop instruction that has been deleted, so FindLoopInstr returns
6 ; the loop instruction from a different loop.
8 @g0 = external global i32
10 ; Function Attrs: nounwind
11 define void @f0() #0 {
13 %v0 = alloca i64, align 8
14 %v1 = bitcast i64* %v0 to [2 x i32]*
15 %v2 = load i32, i32* @g0, align 4
16 br i1 undef, label %b1, label %b2
18 b1: ; preds = %b1, %b0
19 %v3 = phi i32 [ %v4, %b1 ], [ 64, %b0 ]
20 %v4 = add nsw i32 %v3, 1
21 %v5 = icmp slt i32 %v4, %v2
22 br i1 %v5, label %b1, label %b2
24 b2: ; preds = %b6, %b3, %b1, %b0
28 br i1 undef, label %b4, label %b2
30 b4: ; preds = %b3, %b2
31 %v6 = icmp slt i32 undef, 1
32 br i1 %v6, label %b3, label %b5
34 b5: ; preds = %b5, %b4
35 %v7 = phi i32 [ %v18, %b5 ], [ 1, %b4 ]
36 %v8 = phi i32 [ %v19, %b5 ], [ 0, %b4 ]
37 %v9 = add nsw i32 %v8, 0
38 %v10 = lshr i32 %v9, 5
39 %v11 = getelementptr inbounds [2 x i32], [2 x i32]* %v1, i32 0, i32 %v10
40 %v12 = load i32, i32* %v11, align 4
41 %v13 = and i32 %v9, 31
42 %v14 = shl i32 1, %v13
43 %v15 = and i32 %v12, %v14
44 %v16 = icmp ne i32 %v15, 0
45 %v17 = zext i1 %v16 to i32
46 %v18 = and i32 %v17, %v7
47 %v19 = add nsw i32 %v8, 1
48 %v20 = icmp eq i32 %v19, 1
49 br i1 %v20, label %b6, label %b5
52 %v21 = icmp eq i32 %v18, 0
53 br i1 %v21, label %b2, label %b7
56 tail call void @f1() #1
60 ; Function Attrs: nounwind
63 attributes #0 = { nounwind "target-cpu"="hexagonv55" }
64 attributes #1 = { nounwind }