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
4 ; RUN: opt < %s -S -debug-only=loop-unroll -unroll-peel-multi-deopt-exit -passes='require<profile-summary>,function(require<opt-remark-emit>,unroll<no-profile-peeling>)' 2>&1 | FileCheck %s --check-prefixes=CHECK-NO-PEEL
6 ; Make sure we use the profile information correctly to peel-off 3 iterations
7 ; from the loop, and update the branch weights for the peeled loop properly.
8 ; All side exits to deopt does not change weigths.
10 ; CHECK: Loop Unroll: F[basic]
11 ; CHECK: PEELING loop %for.body with iteration count 3!
12 ; CHECK-NO-PEEL-NOT: PEELING loop %for.body
14 ; CHECK: br i1 %c, label %{{.*}}, label %side_exit, !prof !15
15 ; CHECK: br i1 %{{.*}}, label %[[NEXT0:.*]], label %for.cond.for.end_crit_edge, !prof !16
17 ; CHECK: br i1 %c, label %{{.*}}, label %side_exit, !prof !15
18 ; CHECK: br i1 %{{.*}}, label %[[NEXT1:.*]], label %for.cond.for.end_crit_edge, !prof !17
20 ; CHECK: br i1 %c, label %{{.*}}, label %side_exit, !prof !15
21 ; CHECK: br i1 %{{.*}}, label %[[NEXT2:.*]], label %for.cond.for.end_crit_edge, !prof !18
23 ; CHECK: br i1 %c, label %{{.*}}, label %side_exit.loopexit, !prof !15
24 ; CHECK: br i1 %{{.*}}, label %for.body, label %{{.*}}, !prof !19
26 define i32 @basic(i32* %p, i32 %k, i1 %c) #0 !prof !15 {
28 %cmp3 = icmp slt i32 0, %k
29 br i1 %cmp3, label %for.body.lr.ph, label %for.end
31 for.body.lr.ph: ; preds = %entry
34 for.body: ; preds = %for.body.lr.ph, %for.body
35 %i.05 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %continue ]
36 %p.addr.04 = phi i32* [ %p, %for.body.lr.ph ], [ %incdec.ptr, %continue ]
37 %incdec.ptr = getelementptr inbounds i32, i32* %p.addr.04, i32 1
38 store i32 %i.05, i32* %p.addr.04, align 4
39 %inc = add nsw i32 %i.05, 1
40 %cmp = icmp slt i32 %inc, %k
41 br i1 %c, label %continue, label %side_exit, !prof !17
44 br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge, !prof !16
46 for.cond.for.end_crit_edge: ; preds = %for.body
49 for.end: ; preds = %for.cond.for.end_crit_edge, %entry
50 %res = phi i32 [ 0, %entry ], [ %inc, %for.cond.for.end_crit_edge ]
54 %rval = call i32(...) @llvm.experimental.deoptimize.i32() [ "deopt"(i32 %inc) ]
58 declare i32 @llvm.experimental.deoptimize.i32(...)
60 attributes #0 = { nounwind }
61 attributes #1 = { nounwind optsize }
63 !llvm.module.flags = !{!1}
65 !1 = !{i32 1, !"ProfileSummary", !2}
66 !2 = !{!3, !4, !5, !6, !7, !8, !9, !10}
67 !3 = !{!"ProfileFormat", !"InstrProf"}
68 !4 = !{!"TotalCount", i64 10}
69 !5 = !{!"MaxCount", i64 3}
70 !6 = !{!"MaxInternalCount", i64 1}
71 !7 = !{!"MaxFunctionCount", i64 3}
72 !8 = !{!"NumCounts", i64 2}
73 !9 = !{!"NumFunctions", i64 2}
74 !10 = !{!"DetailedSummary", !11}
75 !11 = !{!12, !13, !14}
76 !12 = !{i32 10000, i64 3, i32 2}
77 !13 = !{i32 999000, i64 1, i32 10}
78 !14 = !{i32 999999, i64 1, i32 10}
79 !15 = !{!"function_entry_count", i64 1}
80 !16 = !{!"branch_weights", i32 3001, i32 1001}
81 !17 = !{!"branch_weights", i32 1, i32 0}
83 ; This is a weights of deopt side-exit.
84 ;CHECK: !15 = !{!"branch_weights", i32 1, i32 0}
85 ; This is a weights of latch and its copies.
86 ;CHECK: !16 = !{!"branch_weights", i32 3001, i32 1001}
87 ;CHECK: !17 = !{!"branch_weights", i32 2000, i32 1001}
88 ;CHECK: !18 = !{!"branch_weights", i32 999, i32 1001}
89 ;CHECK: !19 = !{!"branch_weights", i32 1, i32 1001}