1 ; RUN: llvm-profdata merge %S/Inputs/irreducible.proftext -o %t.profdata
2 ; RUN: opt < %s -pgo-instr-use -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE
3 ; RUN: opt < %s -passes=pgo-instr-use -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE
5 ; GEN: $__llvm_profile_raw_version = comdat any
7 ; Function Attrs: noinline norecurse nounwind readnone uwtable
8 define i32 @_Z11irreducibleii(i32 %iter_outer, i32 %iter_inner) local_unnamed_addr #0 {
10 %cmp24 = icmp sgt i32 %iter_outer, 0
11 br i1 %cmp24, label %for.body, label %entry.for.cond.cleanup_crit_edge
13 entry.for.cond.cleanup_crit_edge: ; preds = %entry
14 br label %for.cond.cleanup
16 for.cond.cleanup: ; preds = %entry.for.cond.cleanup_crit_edge, %for.end
17 %sum.0.lcssa = phi i32 [ 0, %entry.for.cond.cleanup_crit_edge ], [ %sum.1, %for.end ]
20 for.body: ; preds = %entry, %for.end
21 %k.026 = phi i32 [ %inc12, %for.end ], [ 0, %entry ]
22 %sum.025 = phi i32 [ %sum.1, %for.end ], [ 0, %entry ]
23 %rem23 = and i32 %k.026, 1
24 %cmp1 = icmp eq i32 %rem23, 0
25 br i1 %cmp1, label %entry8, label %for.cond2
27 for.cond2: ; preds = %for.body, %if.end9
28 %sum.1 = phi i32 [ %add10, %if.end9 ], [ %sum.025, %for.body ]
29 %i.0 = phi i32 [ %inc, %if.end9 ], [ 0, %for.body ]
30 %cmp3 = icmp slt i32 %i.0, %iter_inner
31 br i1 %cmp3, label %for.body4, label %for.end
32 ; USE: br i1 %cmp3, label %for.body4, label %for.end, !prof !{{[0-9]+}},
33 ; USE-SAME: !irr_loop ![[FOR_COND2_IRR_LOOP:[0-9]+]]
35 for.body4: ; preds = %for.cond2
36 %rem5 = srem i32 %k.026, 3
37 %cmp6 = icmp eq i32 %rem5, 0
38 br i1 %cmp6, label %entry8, label %if.end9
40 entry8: ; preds = %for.body4, %for.body
41 %sum.2 = phi i32 [ %sum.025, %for.body ], [ %sum.1, %for.body4 ]
42 %i.1 = phi i32 [ 0, %for.body ], [ %i.0, %for.body4 ]
43 %add = add nsw i32 %sum.2, 4
45 ; USE: br label %if.end9,
46 ; USE-SAME: !irr_loop ![[ENTRY8_IRR_LOOP:[0-9]+]]
48 if.end9: ; preds = %entry8, %for.body4
49 %sum.3 = phi i32 [ %add, %entry8 ], [ %sum.1, %for.body4 ]
50 %i.2 = phi i32 [ %i.1, %entry8 ], [ %i.0, %for.body4 ]
51 %add10 = add nsw i32 %sum.3, 1
52 %inc = add nsw i32 %i.2, 1
54 ; USE: br label %for.cond2,
55 ; USE-SAME: !irr_loop ![[IF_END9_IRR_LOOP:[0-9]+]]
57 for.end: ; preds = %for.cond2
58 %inc12 = add nuw nsw i32 %k.026, 1
59 %exitcond = icmp eq i32 %inc12, %iter_outer
60 br i1 %exitcond, label %for.cond.cleanup, label %for.body
65 @targets = local_unnamed_addr global [256 x i8*] zeroinitializer, align 16
66 @tracing = local_unnamed_addr global i32 0, align 4
68 ; Function Attrs: noinline norecurse nounwind uwtable
69 define i32 @_Z11irreduciblePh(i8* nocapture readonly %p) {
71 %0 = load i32, i32* @tracing, align 4
72 %1 = trunc i32 %0 to i8
73 %tobool = icmp eq i32 %0, 0
76 for.cond1: ; preds = %sw.default, %entry
79 dispatch_op: ; preds = %sw.bb6, %for.cond1
80 switch i8 %1, label %sw.default [
82 i8 1, label %dispatch_op.sw.bb6_crit_edge
86 dispatch_op.sw.bb6_crit_edge: ; preds = %dispatch_op
89 sw.bb: ; preds = %indirectgoto, %dispatch_op
92 TARGET_1: ; preds = %indirectgoto
94 ; USE: br label %sw.bb6, !irr_loop {{.*}}
96 sw.bb6: ; preds = %TARGET_1, %dispatch_op.sw.bb6_crit_edge
97 br i1 %tobool, label %dispatch_op, label %if.then
98 ; USE: br i1 %tobool, label %dispatch_op, label %if.then, !prof !{{[0-9]+}},
99 ; USE-SAME: !irr_loop ![[SW_BB6_IRR_LOOP:[0-9]+]]
101 if.then: ; preds = %sw.bb6
102 br label %indirectgoto
104 TARGET_2: ; preds = %indirectgoto
106 ; USE: br label %sw.bb15, !irr_loop {{.*}}
108 sw.bb15: ; preds = %TARGET_2, %dispatch_op
109 br i1 %tobool, label %if.then18, label %exit
110 ; USE: br i1 %tobool, label %if.then18, label %exit, !prof !{{[0-9]+}},
111 ; USE-SAME: !irr_loop ![[SW_BB15_IRR_LOOP:[0-9]+]]
113 if.then18: ; preds = %sw.bb15
114 br label %indirectgoto
116 unknown_op: ; preds = %indirectgoto
119 sw.default: ; preds = %unknown_op, %dispatch_op
122 exit: ; preds = %sw.bb15, %sw.bb
125 indirectgoto: ; preds = %if.then18, %if.then
126 %idxprom21 = zext i32 %0 to i64
127 %arrayidx22 = getelementptr inbounds [256 x i8*], [256 x i8*]* @targets, i64 0, i64 %idxprom21
128 %target = load i8*, i8** %arrayidx22, align 8
129 indirectbr i8* %target, [label %unknown_op, label %sw.bb, label %TARGET_1, label %TARGET_2]
130 ; USE: indirectbr i8* %target, [label %unknown_op, label %sw.bb, label %TARGET_1, label %TARGET_2], !prof !{{[0-9]+}},
131 ; USE-SAME: !irr_loop ![[INDIRECTGOTO_IRR_LOOP:[0-9]+]]
134 ; USE: ![[FOR_COND2_IRR_LOOP]] = !{!"loop_header_weight", i64 1050}
135 ; USE: ![[ENTRY8_IRR_LOOP]] = !{!"loop_header_weight", i64 373}
136 ; USE: ![[IF_END9_IRR_LOOP]] = !{!"loop_header_weight", i64 1000}
137 ; USE: ![[SW_BB6_IRR_LOOP]] = !{!"loop_header_weight", i64 501}
138 ; USE: ![[SW_BB15_IRR_LOOP]] = !{!"loop_header_weight", i64 100}
139 ; USE: ![[INDIRECTGOTO_IRR_LOOP]] = !{!"loop_header_weight", i64 400}