| Krzysztof Parzyszek | d91a9e2 | 2018-08-02 22:17:53 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=hexagon -enable-pipeliner -hexagon-initial-cfg-cleanup=0 -stats -o /dev/null < %s 2>&1 | FileCheck %s --check-prefix=STATS |
| Krzysztof Parzyszek | 046090d | 2018-03-12 14:01:28 +0000 | [diff] [blame] | 2 | ; REQUIRES: asserts |
| 3 | |
| 4 | ; Check that we handle the case when a value is first defined in the loop. |
| 5 | |
| 6 | ; STATS: 1 pipeliner - Number of loops software pipelined |
| 7 | |
| 8 | ; Function Attrs: nounwind |
| 9 | define fastcc void @f0() #0 { |
| 10 | b0: |
| 11 | br i1 undef, label %b7, label %b1 |
| 12 | |
| 13 | b1: ; preds = %b0 |
| 14 | br i1 undef, label %b2, label %b4 |
| 15 | |
| 16 | b2: ; preds = %b1 |
| 17 | %v0 = load i16, i16* undef, align 2 |
| 18 | %v1 = load i16, i16* undef, align 2 |
| 19 | br i1 undef, label %b5, label %b3 |
| 20 | |
| 21 | b3: ; preds = %b5, %b2 |
| 22 | %v2 = phi i16 [ 0, %b2 ], [ %v14, %b5 ] |
| 23 | br label %b4 |
| 24 | |
| 25 | b4: ; preds = %b3, %b1 |
| 26 | br i1 undef, label %b7, label %b6 |
| 27 | |
| 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 ] |
| 35 | %v9 = or i16 0, %v7 |
| 36 | %v10 = lshr i16 %v3, 8 |
| 37 | %v11 = lshr i16 %v6, 8 |
| 38 | %v12 = or i16 %v11, %v9 |
| 39 | %v13 = or i16 0, %v12 |
| 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 |
| 44 | |
| 45 | b6: ; preds = %b4 |
| 46 | br label %b7 |
| 47 | |
| 48 | b7: ; preds = %b6, %b4, %b0 |
| 49 | ret void |
| 50 | } |
| 51 | |
| 52 | attributes #0 = { nounwind "target-cpu"="hexagonv55" } |