| ; RUN: opt -passes=loop-unroll-and-jam -allow-unroll-and-jam -unroll-and-jam-count=4 -unroll-remainder < %s -S | FileCheck %s |
| ; |
| ; Check that followup attributes are set in the new loops. |
| ; |
| target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" |
| |
| define void @followup(i32 %I, i32 %J, ptr noalias nocapture %A, ptr noalias nocapture readonly %B) { |
| entry: |
| %cmp = icmp ne i32 %J, 0 |
| %cmp122 = icmp ne i32 %I, 0 |
| %or.cond = and i1 %cmp, %cmp122 |
| br i1 %or.cond, label %for.outer.preheader, label %for.end |
| |
| for.outer.preheader: |
| br label %for.outer |
| |
| for.outer: |
| %i.us = phi i32 [ %add8.us, %for.latch ], [ 0, %for.outer.preheader ] |
| br label %for.inner |
| |
| for.inner: |
| %j.us = phi i32 [ 0, %for.outer ], [ %inc.us, %for.inner ] |
| %sum1.us = phi i32 [ 0, %for.outer ], [ %add.us, %for.inner ] |
| %arrayidx.us = getelementptr inbounds i32, ptr %B, i32 %j.us |
| %0 = load i32, ptr %arrayidx.us, align 4 |
| %add.us = add i32 %0, %sum1.us |
| %inc.us = add nuw i32 %j.us, 1 |
| %exitcond = icmp eq i32 %inc.us, %J |
| br i1 %exitcond, label %for.latch, label %for.inner |
| |
| for.latch: |
| %add.us.lcssa = phi i32 [ %add.us, %for.inner ] |
| %arrayidx6.us = getelementptr inbounds i32, ptr %A, i32 %i.us |
| store i32 %add.us.lcssa, ptr %arrayidx6.us, align 4 |
| %add8.us = add nuw i32 %i.us, 1 |
| %exitcond25 = icmp eq i32 %add8.us, %I |
| br i1 %exitcond25, label %for.end.loopexit, label %for.outer, !llvm.loop !0 |
| |
| for.end.loopexit: |
| br label %for.end |
| |
| for.end: |
| ret void |
| } |
| |
| !0 = !{!0, !1, !2, !3, !4, !6} |
| !1 = !{!"llvm.loop.unroll_and_jam.enable"} |
| !2 = !{!"llvm.loop.unroll_and_jam.followup_outer", !{!"FollowupOuter"}} |
| !3 = !{!"llvm.loop.unroll_and_jam.followup_inner", !{!"FollowupInner"}} |
| !4 = !{!"llvm.loop.unroll_and_jam.followup_all", !{!"FollowupAll"}} |
| !6 = !{!"llvm.loop.unroll_and_jam.followup_remainder_inner", !{!"FollowupRemainderInner"}} |
| |
| |
| ; CHECK: br i1 %exitcond.3, label %for.latch, label %for.inner, !llvm.loop ![[LOOP_INNER:[0-9]+]] |
| ; CHECK: br i1 %niter.ncmp.3, label %for.end.loopexit.unr-lcssa.loopexit, label %for.outer, !llvm.loop ![[LOOP_OUTER:[0-9]+]] |
| ; CHECK: br i1 %exitcond.epil, label %for.latch.epil, label %for.inner.epil, !llvm.loop ![[LOOP_REMAINDER_INNER:[0-9]+]] |
| ; CHECK: br i1 %exitcond.epil.1, label %for.latch.epil.1, label %for.inner.epil.1, !llvm.loop ![[LOOP_REMAINDER_INNER]] |
| ; CHECK: br i1 %exitcond.epil.2, label %for.latch.epil.2, label %for.inner.epil.2, !llvm.loop ![[LOOP_REMAINDER_INNER]] |
| |
| ; CHECK: ![[LOOP_INNER]] = distinct !{![[LOOP_INNER]], ![[FOLLOWUP_ALL:[0-9]+]], ![[FOLLOWUP_INNER:[0-9]+]]} |
| ; CHECK: ![[FOLLOWUP_ALL]] = !{!"FollowupAll"} |
| ; CHECK: ![[FOLLOWUP_INNER]] = !{!"FollowupInner"} |
| ; CHECK: ![[LOOP_OUTER]] = distinct !{![[LOOP_OUTER]], ![[FOLLOWUP_ALL]], ![[FOLLOWUP_OUTER:[0-9]+]]} |
| ; CHECK: ![[FOLLOWUP_OUTER]] = !{!"FollowupOuter"} |
| ; CHECK: ![[LOOP_REMAINDER_INNER]] = distinct !{![[LOOP_REMAINDER_INNER]], ![[FOLLOWUP_ALL]], ![[FOLLOWUP_REMAINDER_INNER:[0-9]+]]} |
| ; CHECK: ![[FOLLOWUP_REMAINDER_INNER]] = !{!"FollowupRemainderInner"} |