| ; RUN: opt -basic-aa -loop-distribute -S < %s | FileCheck %s |
| ; |
| ; Check that followup loop-attributes are applied to the loops after |
| ; loop distribution. |
| ; |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| |
| define void @f(i32* %a, i32* %b, i32* %c, i32* %d, i32* %e) { |
| entry: |
| br label %for.body |
| |
| for.body: |
| %ind = phi i64 [ 0, %entry ], [ %add, %for.body ] |
| |
| %arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind |
| %loadA = load i32, i32* %arrayidxA, align 4 |
| |
| %arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind |
| %loadB = load i32, i32* %arrayidxB, align 4 |
| |
| %mulA = mul i32 %loadB, %loadA |
| |
| %add = add nuw nsw i64 %ind, 1 |
| %arrayidxA_plus_4 = getelementptr inbounds i32, i32* %a, i64 %add |
| store i32 %mulA, i32* %arrayidxA_plus_4, align 4 |
| |
| %arrayidxD = getelementptr inbounds i32, i32* %d, i64 %ind |
| %loadD = load i32, i32* %arrayidxD, align 4 |
| |
| %arrayidxE = getelementptr inbounds i32, i32* %e, i64 %ind |
| %loadE = load i32, i32* %arrayidxE, align 4 |
| |
| %mulC = mul i32 %loadD, %loadE |
| |
| %arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind |
| store i32 %mulC, i32* %arrayidxC, align 4 |
| |
| %exitcond = icmp eq i64 %add, 20 |
| br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !0 |
| |
| for.end: |
| ret void |
| } |
| |
| !0 = distinct !{!0, !1, !2, !3, !4, !5} |
| !1 = !{!"llvm.loop.distribute.enable", i1 true} |
| !2 = !{!"llvm.loop.distribute.followup_all", !{!"FollowupAll"}} |
| !3 = !{!"llvm.loop.distribute.followup_coincident", !{!"FollowupCoincident", i1 false}} |
| !4 = !{!"llvm.loop.distribute.followup_sequential", !{!"FollowupSequential", i32 8}} |
| !5 = !{!"llvm.loop.distribute.followup_fallback", !{!"FollowupFallback"}} |
| |
| |
| ; CHECK-LABEL: for.body.lver.orig: |
| ; CHECK: br i1 %exitcond.lver.orig, label %for.end.loopexit, label %for.body.lver.orig, !llvm.loop ![[LOOP_ORIG:[0-9]+]] |
| ; CHECK-LABEL: for.body.ldist1: |
| ; CHECK: br i1 %exitcond.ldist1, label %for.body.ph, label %for.body.ldist1, !llvm.loop ![[LOOP_SEQUENTIAL:[0-9]+]] |
| ; CHECK-LABEL: for.body: |
| ; CHECK: br i1 %exitcond, label %for.end.loopexit26, label %for.body, !llvm.loop ![[LOOP_COINCIDENT:[0-9]+]] |
| ; CHECK-LABEL: for.end.loopexit: |
| ; CHECK: br label %for.end |
| ; CHECK-LABEL: for.end.loopexit26: |
| ; CHECK: br label %for.end |
| |
| ; CHECK: ![[LOOP_ORIG]] = distinct !{![[LOOP_ORIG]], ![[FOLLOWUP_ALL:[0-9]+]], ![[FOLLOUP_FALLBACK:[0-9]+]]} |
| ; CHECK: ![[FOLLOWUP_ALL]] = !{!"FollowupAll"} |
| ; CHECK: ![[FOLLOUP_FALLBACK]] = !{!"FollowupFallback"} |
| ; CHECK: ![[LOOP_SEQUENTIAL]] = distinct !{![[LOOP_SEQUENTIAL]], ![[FOLLOWUP_ALL]], ![[FOLLOWUP_SEQUENTIAL:[0-9]+]]} |
| ; CHECK: ![[FOLLOWUP_SEQUENTIAL]] = !{!"FollowupSequential", i32 8} |
| ; CHECK: ![[LOOP_COINCIDENT]] = distinct !{![[LOOP_COINCIDENT]], ![[FOLLOWUP_ALL]], ![[FOLLOWUP_COINCIDENT:[0-9]+]]} |
| ; CHECK: ![[FOLLOWUP_COINCIDENT]] = !{!"FollowupCoincident", i1 false} |