2 ; RUN: opt < %s -S -debug-only=loop-unroll -loop-unroll -unroll-runtime -unroll-peel-multi-deopt-exit 2>&1 | FileCheck %s
3 ; RUN: opt < %s -S -debug-only=loop-unroll -unroll-peel-multi-deopt-exit -passes='require<profile-summary>,function(require<opt-remark-emit>,unroll)' 2>&1 | FileCheck %s
5 ; Make sure we use the profile information correctly to peel-off 3 iterations
6 ; from the loop, and update the branch weights for the peeled loop properly.
8 ; CHECK: Loop Unroll: F[basic]
9 ; CHECK: PEELING loop %for.body with iteration count 3!
12 ; CHECK: br i1 %{{.*}}, label %[[NEXT0:.*]], label %for.cond.for.end_crit_edge, !prof !16
14 ; CHECK: br i1 %{{.*}}, label %[[NEXT1:.*]], label %for.cond.for.end_crit_edge, !prof !17
16 ; CHECK: br i1 %{{.*}}, label %[[NEXT2:.*]], label %for.cond.for.end_crit_edge, !prof !18
18 ; CHECK: br i1 %{{.*}}, label %for.body, label %{{.*}}, !prof !19
20 define i32 @basic(i32* %p, i32 %k, i1 %c) #0 !prof !15 {
22 %cmp3 = icmp slt i32 0, %k
23 br i1 %cmp3, label %for.body.lr.ph, label %for.end
25 for.body.lr.ph: ; preds = %entry
28 for.body: ; preds = %for.body.lr.ph, %for.body
29 %i.05 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %continue ]
30 %p.addr.04 = phi i32* [ %p, %for.body.lr.ph ], [ %incdec.ptr, %continue ]
31 %incdec.ptr = getelementptr inbounds i32, i32* %p.addr.04, i32 1
32 store i32 %i.05, i32* %p.addr.04, align 4
33 %inc = add nsw i32 %i.05, 1
34 %cmp = icmp slt i32 %inc, %k
35 br i1 %c, label %continue, label %side_exit, !prof !17
38 br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge, !prof !16
40 for.cond.for.end_crit_edge: ; preds = %for.body
43 for.end: ; preds = %for.cond.for.end_crit_edge, %entry
44 %res = phi i32 [ 0, %entry ], [ %inc, %for.cond.for.end_crit_edge ]
48 %rval = call i32(...) @llvm.experimental.deoptimize.i32() [ "deopt"(i32 %inc) ]
52 declare i32 @llvm.experimental.deoptimize.i32(...)
54 attributes #0 = { nounwind }
55 attributes #1 = { nounwind optsize }
57 !llvm.module.flags = !{!1}
59 !1 = !{i32 1, !"ProfileSummary", !2}
60 !2 = !{!3, !4, !5, !6, !7, !8, !9, !10}
61 !3 = !{!"ProfileFormat", !"InstrProf"}
62 !4 = !{!"TotalCount", i64 10}
63 !5 = !{!"MaxCount", i64 3}
64 !6 = !{!"MaxInternalCount", i64 1}
65 !7 = !{!"MaxFunctionCount", i64 3}
66 !8 = !{!"NumCounts", i64 2}
67 !9 = !{!"NumFunctions", i64 2}
68 !10 = !{!"DetailedSummary", !11}
69 !11 = !{!12, !13, !14}
70 !12 = !{i32 10000, i64 3, i32 2}
71 !13 = !{i32 999000, i64 1, i32 10}
72 !14 = !{i32 999999, i64 1, i32 10}
73 !15 = !{!"function_entry_count", i64 1}
74 !16 = !{!"branch_weights", i32 3001, i32 1001}
75 !17 = !{!"branch_weights", i32 1, i32 0}
77 ;CHECK: !16 = !{!"branch_weights", i32 900, i32 101}
78 ;CHECK: !17 = !{!"branch_weights", i32 540, i32 360}
79 ;CHECK: !18 = !{!"branch_weights", i32 162, i32 378}
80 ;CHECK: !19 = !{!"branch_weights", i32 1399, i32 162}