1 ; RUN: llc -march=hexagon -enable-pipeliner -hexagon-initial-cfg-cleanup=0 -stats -o /dev/null < %s 2>&1 -pipeliner-experimental-cg=true | FileCheck %s --check-prefix=STATS
4 ; Check that we handle the case when a value is first defined in the loop.
6 ; STATS: 1 pipeliner - Number of loops software pipelined
8 ; Function Attrs: nounwind
9 define fastcc void @f0() #0 {
11 br i1 undef, label %b7, label %b1
14 br i1 undef, label %b2, label %b4
17 %v0 = load i16, ptr undef, align 2
18 %v1 = load i16, ptr undef, align 2
19 br i1 undef, label %b5, label %b3
21 b3: ; preds = %b5, %b2
22 %v2 = phi i16 [ 0, %b2 ], [ %v14, %b5 ]
25 b4: ; preds = %b3, %b1
26 br i1 undef, label %b7, label %b6
28 b5: ; preds = %b5, %b2
29 %v3 = phi i16 [ %v5, %b5 ], [ undef, %b2 ]
30 %v4 = phi i16 [ 0, %b5 ], [ %v1, %b2 ]
31 %v5 = phi i16 [ 0, %b5 ], [ %v0, %b2 ]
32 %v6 = phi i16 [ %v4, %b5 ], [ undef, %b2 ]
33 %v7 = phi i16 [ %v14, %b5 ], [ 0, %b2 ]
34 %v8 = phi i32 [ %v15, %b5 ], [ undef, %b2 ]
36 %v10 = lshr i16 %v3, 8
37 %v11 = lshr i16 %v6, 8
38 %v12 = or i16 %v11, %v9
40 %v14 = or i16 %v10, %v13
41 %v15 = add nsw i32 %v8, -32
42 %v16 = icmp sgt i32 %v15, 31
43 br i1 %v16, label %b5, label %b3
48 b7: ; preds = %b6, %b4, %b0
52 attributes #0 = { nounwind "target-cpu"="hexagonv55" }