1; RUN: opt -basic-aa -loop-distribute -S < %s | FileCheck %s 2; 3; Check that followup loop-attributes are applied to the loops after 4; loop distribution. 5; 6target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 7 8define void @f(i32* %a, i32* %b, i32* %c, i32* %d, i32* %e) { 9entry: 10 br label %for.body 11 12for.body: 13 %ind = phi i64 [ 0, %entry ], [ %add, %for.body ] 14 15 %arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind 16 %loadA = load i32, i32* %arrayidxA, align 4 17 18 %arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind 19 %loadB = load i32, i32* %arrayidxB, align 4 20 21 %mulA = mul i32 %loadB, %loadA 22 23 %add = add nuw nsw i64 %ind, 1 24 %arrayidxA_plus_4 = getelementptr inbounds i32, i32* %a, i64 %add 25 store i32 %mulA, i32* %arrayidxA_plus_4, align 4 26 27 %arrayidxD = getelementptr inbounds i32, i32* %d, i64 %ind 28 %loadD = load i32, i32* %arrayidxD, align 4 29 30 %arrayidxE = getelementptr inbounds i32, i32* %e, i64 %ind 31 %loadE = load i32, i32* %arrayidxE, align 4 32 33 %mulC = mul i32 %loadD, %loadE 34 35 %arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind 36 store i32 %mulC, i32* %arrayidxC, align 4 37 38 %exitcond = icmp eq i64 %add, 20 39 br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !0 40 41for.end: 42 ret void 43} 44 45!0 = distinct !{!0, !1, !2, !3, !4, !5} 46!1 = !{!"llvm.loop.distribute.enable", i1 true} 47!2 = !{!"llvm.loop.distribute.followup_all", !{!"FollowupAll"}} 48!3 = !{!"llvm.loop.distribute.followup_coincident", !{!"FollowupCoincident", i1 false}} 49!4 = !{!"llvm.loop.distribute.followup_sequential", !{!"FollowupSequential", i32 8}} 50!5 = !{!"llvm.loop.distribute.followup_fallback", !{!"FollowupFallback"}} 51 52 53; CHECK-LABEL: for.body.lver.orig: 54; CHECK: br i1 %exitcond.lver.orig, label %for.end.loopexit, label %for.body.lver.orig, !llvm.loop ![[LOOP_ORIG:[0-9]+]] 55; CHECK-LABEL: for.body.ldist1: 56; CHECK: br i1 %exitcond.ldist1, label %for.body.ph, label %for.body.ldist1, !llvm.loop ![[LOOP_SEQUENTIAL:[0-9]+]] 57; CHECK-LABEL: for.body: 58; CHECK: br i1 %exitcond, label %for.end.loopexit26, label %for.body, !llvm.loop ![[LOOP_COINCIDENT:[0-9]+]] 59; CHECK-LABEL: for.end.loopexit: 60; CHECK: br label %for.end 61; CHECK-LABEL: for.end.loopexit26: 62; CHECK: br label %for.end 63 64; CHECK: ![[LOOP_ORIG]] = distinct !{![[LOOP_ORIG]], ![[FOLLOWUP_ALL:[0-9]+]], ![[FOLLOUP_FALLBACK:[0-9]+]]} 65; CHECK: ![[FOLLOWUP_ALL]] = !{!"FollowupAll"} 66; CHECK: ![[FOLLOUP_FALLBACK]] = !{!"FollowupFallback"} 67; CHECK: ![[LOOP_SEQUENTIAL]] = distinct !{![[LOOP_SEQUENTIAL]], ![[FOLLOWUP_ALL]], ![[FOLLOWUP_SEQUENTIAL:[0-9]+]]} 68; CHECK: ![[FOLLOWUP_SEQUENTIAL]] = !{!"FollowupSequential", i32 8} 69; CHECK: ![[LOOP_COINCIDENT]] = distinct !{![[LOOP_COINCIDENT]], ![[FOLLOWUP_ALL]], ![[FOLLOWUP_COINCIDENT:[0-9]+]]} 70; CHECK: ![[FOLLOWUP_COINCIDENT]] = !{!"FollowupCoincident", i1 false} 71