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; 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"}
|
