1 ; RUN: llc -march=hexagon -O3 < %s 2 ; REQUIRES: asserts 3 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. 7 8 @g0 = external global i32 9 10 ; Function Attrs: nounwind 11 define void @f0() #0 { 12 b0: 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 17 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 23 24 b2: ; preds = %b6, %b3, %b1, %b0 25 br label %b4 26 27 b3: ; preds = %b4 28 br i1 undef, label %b4, label %b2 29 30 b4: ; preds = %b3, %b2 31 %v6 = icmp slt i32 undef, 1 32 br i1 %v6, label %b3, label %b5 33 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 50 51 b6: ; preds = %b5 52 %v21 = icmp eq i32 %v18, 0 53 br i1 %v21, label %b2, label %b7 54 55 b7: ; preds = %b6 56 tail call void @f1() #1 57 unreachable 58 } 59 60 ; Function Attrs: nounwind 61 declare void @f1() #1 62 63 attributes #0 = { nounwind "target-cpu"="hexagonv55" } 64 attributes #1 = { nounwind } 65
