1 ; RUN: llc -march=hexagon -O2 < %s
4 ; Test that the dead and kill flags are not added incorrectly during the
5 ; Hexagon Expand Condsets pass. The pass shouldn't add a kill flag to a use that
6 ; is tied to a definition, and the pass shouldn't remove the dead flag for a
7 ; definition that is really dead. The removal of the dead flag causes an assert
8 ; in the Machine Scheduler when querying live interval information.
10 define void @f0() #0 {
14 b1: ; preds = %b3, %b0
15 %v0 = load i16, ptr undef, align 4
16 %v1 = sext i16 %v0 to i32
18 %v3 = sub nsw i32 8, %v2
19 %v4 = sub nsw i32 8, 0
22 b2: ; preds = %b2, %b1
23 %v5 = phi ptr [ undef, %b1 ], [ %v16, %b2 ]
24 %v6 = phi i32 [ 4, %b1 ], [ %v17, %b2 ]
25 %v7 = load i8, ptr undef, align 1
26 %v8 = zext i8 %v7 to i32
27 %v9 = mul nuw nsw i32 %v8, %v3
28 %v10 = add nuw nsw i32 0, %v9
29 %v11 = mul nuw nsw i32 %v10, %v4
30 %v12 = add nuw nsw i32 0, %v11
31 %v13 = lshr i32 %v12, 6
32 %v14 = trunc i32 %v13 to i8
33 store i8 %v14, ptr %v5, align 1
34 %v15 = getelementptr inbounds i8, ptr %v5, i32 1
35 %v16 = select i1 undef, ptr undef, ptr %v15
36 %v17 = add nsw i32 %v6, -1
37 %v18 = icmp eq i32 %v17, 0
38 br i1 %v18, label %b3, label %b2
41 br i1 undef, label %b1, label %b4
47 attributes #0 = { nounwind "target-cpu"="hexagonv65" }