| ; 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 |
| ; REQUIRES: asserts |
| |
| ; Check that we handle the case when a value is first defined in the loop. |
| |
| ; STATS: 1 pipeliner - Number of loops software pipelined |
| |
| ; Function Attrs: nounwind |
| define fastcc void @f0() #0 { |
| b0: |
| br i1 undef, label %b7, label %b1 |
| |
| b1: ; preds = %b0 |
| br i1 undef, label %b2, label %b4 |
| |
| b2: ; preds = %b1 |
| %v0 = load i16, i16* undef, align 2 |
| %v1 = load i16, i16* undef, align 2 |
| br i1 undef, label %b5, label %b3 |
| |
| b3: ; preds = %b5, %b2 |
| %v2 = phi i16 [ 0, %b2 ], [ %v14, %b5 ] |
| br label %b4 |
| |
| b4: ; preds = %b3, %b1 |
| br i1 undef, label %b7, label %b6 |
| |
| b5: ; preds = %b5, %b2 |
| %v3 = phi i16 [ %v5, %b5 ], [ undef, %b2 ] |
| %v4 = phi i16 [ 0, %b5 ], [ %v1, %b2 ] |
| %v5 = phi i16 [ 0, %b5 ], [ %v0, %b2 ] |
| %v6 = phi i16 [ %v4, %b5 ], [ undef, %b2 ] |
| %v7 = phi i16 [ %v14, %b5 ], [ 0, %b2 ] |
| %v8 = phi i32 [ %v15, %b5 ], [ undef, %b2 ] |
| %v9 = or i16 0, %v7 |
| %v10 = lshr i16 %v3, 8 |
| %v11 = lshr i16 %v6, 8 |
| %v12 = or i16 %v11, %v9 |
| %v13 = or i16 0, %v12 |
| %v14 = or i16 %v10, %v13 |
| %v15 = add nsw i32 %v8, -32 |
| %v16 = icmp sgt i32 %v15, 31 |
| br i1 %v16, label %b5, label %b3 |
| |
| b6: ; preds = %b4 |
| br label %b7 |
| |
| b7: ; preds = %b6, %b4, %b0 |
| ret void |
| } |
| |
| attributes #0 = { nounwind "target-cpu"="hexagonv55" } |
