1 ; RUN: llc -march=hexagon -mcpu=hexagonv5 -enable-pipeliner < %s | FileCheck %s 2 3 ; Make sure we attempt to pipeline all inner most loops. 4 5 ; Check if the first loop is pipelined. 6 ; CHECK: loop0(.LBB0_[[LOOP:.]], 7 ; CHECK: .LBB0_[[LOOP]]: 8 ; CHECK: add(r{{[0-9]+}}, r{{[0-9]+}}) 9 ; CHECK-NEXT: memw(r{{[0-9]+}}{{.*}}++{{.*}}#4) 10 ; CHECK-NEXT: endloop0 11 12 ; Check if the second loop is pipelined. 13 ; CHECK: loop0(.LBB0_[[LOOP:.]], 14 ; CHECK: .LBB0_[[LOOP]]: 15 ; CHECK: add(r{{[0-9]+}}, r{{[0-9]+}}) 16 ; CHECK-NEXT: memw(r{{[0-9]+}}{{.*}}++{{.*}}#4) 17 ; CHECK-NEXT: endloop0 18 19 define i32 @test(i32* %a, i32 %n, i32 %l) { 20 entry: 21 %cmp23 = icmp sgt i32 %n, 0 22 br i1 %cmp23, label %for.body3.lr.ph.preheader, label %for.end14 23 24 for.body3.lr.ph.preheader: 25 br label %for.body3.lr.ph 26 27 for.body3.lr.ph: 28 %sum1.026 = phi i32 [ %add8, %for.inc12 ], [ 0, %for.body3.lr.ph.preheader ] 29 %sum.025 = phi i32 [ %add, %for.inc12 ], [ 0, %for.body3.lr.ph.preheader ] 30 %j.024 = phi i32 [ %inc13, %for.inc12 ], [ 0, %for.body3.lr.ph.preheader ] 31 br label %for.body3 32 33 for.body3: 34 %sum.118 = phi i32 [ %sum.025, %for.body3.lr.ph ], [ %add, %for.body3 ] 35 %arrayidx.phi = phi i32* [ %a, %for.body3.lr.ph ], [ %arrayidx.inc, %for.body3 ] 36 %i.017 = phi i32 [ 0, %for.body3.lr.ph ], [ %inc, %for.body3 ] 37 %0 = load i32, i32* %arrayidx.phi, align 4 38 %add = add nsw i32 %0, %sum.118 39 %inc = add nsw i32 %i.017, 1 40 %exitcond = icmp eq i32 %inc, %n 41 %arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1 42 br i1 %exitcond, label %for.end, label %for.body3 43 44 for.end: 45 tail call void @bar(i32* %a) #2 46 br label %for.body6 47 48 for.body6: 49 %sum1.121 = phi i32 [ %sum1.026, %for.end ], [ %add8, %for.body6 ] 50 %arrayidx7.phi = phi i32* [ %a, %for.end ], [ %arrayidx7.inc, %for.body6 ] 51 %i.120 = phi i32 [ 0, %for.end ], [ %inc10, %for.body6 ] 52 %1 = load i32, i32* %arrayidx7.phi, align 4 53 %add8 = add nsw i32 %1, %sum1.121 54 %inc10 = add nsw i32 %i.120, 1 55 %exitcond29 = icmp eq i32 %inc10, %n 56 %arrayidx7.inc = getelementptr i32, i32* %arrayidx7.phi, i32 1 57 br i1 %exitcond29, label %for.inc12, label %for.body6 58 59 for.inc12: 60 %inc13 = add nsw i32 %j.024, 1 61 %exitcond30 = icmp eq i32 %inc13, %n 62 br i1 %exitcond30, label %for.end14.loopexit, label %for.body3.lr.ph 63 64 for.end14.loopexit: 65 br label %for.end14 66 67 for.end14: 68 %sum1.0.lcssa = phi i32 [ 0, %entry ], [ %add8, %for.end14.loopexit ] 69 %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.end14.loopexit ] 70 %add15 = add nsw i32 %sum1.0.lcssa, %sum.0.lcssa 71 ret i32 %add15 72 } 73 74 declare void @bar(i32*) 75 76
