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1; RUN: opt < %s -pgo-instr-gen -S | FileCheck %s --check-prefix=GEN
2; RUN: opt < %s -passes=pgo-instr-gen -S | FileCheck %s --check-prefix=GEN
3; RUN: llvm-profdata merge %S/Inputs/criticaledge.proftext -o %t.profdata
4; RUN: opt < %s -pgo-instr-use -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE
5; RUN: opt < %s -passes=pgo-instr-use -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE
6target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
7target triple = "x86_64-unknown-linux-gnu"
8
9; GEN: $__llvm_profile_raw_version = comdat any
10; GEN: @__llvm_profile_raw_version = constant i64 {{[0-9]+}}, comdat
11; GEN: @__profn_test_criticalEdge = private constant [17 x i8] c"test_criticalEdge"
12; GEN: @__profn__stdin__bar = private constant [11 x i8] c"<stdin>:bar"
13
14define i32 @test_criticalEdge(i32 %i, i32 %j) {
15entry:
16; CHECK: entry:
17; GEN-NOT: call void @llvm.instrprof.increment
18  switch i32 %i, label %sw.default [
19    i32 1, label %sw.bb
20    i32 2, label %sw.bb1
21    i32 3, label %sw.bb2
22    i32 4, label %sw.bb2
23; CHECK:    i32 3, label %entry.sw.bb2_crit_edge
24; CHECK:    i32 4, label %entry.sw.bb2_crit_edge1
25    i32 5, label %sw.bb2
26  ]
27; USE: ]
28; USE-SAME: !prof ![[BW_SWITCH:[0-9]+]]
29
30; CHECK: entry.sw.bb2_crit_edge1:
31; GEN:   call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 1)
32; CHECK:   br label %sw.bb2
33
34; CHECK: entry.sw.bb2_crit_edge:
35; GEN:   call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 0)
36; CHECK:   br label %sw.bb2
37
38sw.bb:
39; GEN: sw.bb:
40; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 5)
41  %call = call i32 @bar(i32 2)
42  br label %sw.epilog
43
44sw.bb1:
45; GEN: sw.bb1:
46; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 4)
47  %call2 = call i32 @bar(i32 1024)
48  br label %sw.epilog
49
50sw.bb2:
51; GEN: sw.bb2:
52; GEN-NOT: call void @llvm.instrprof.increment
53  %cmp = icmp eq i32 %j, 2
54  br i1 %cmp, label %if.then, label %if.end
55; USE: br i1 %cmp, label %if.then, label %if.end
56; USE-SAME: !prof ![[BW_SW_BB2:[0-9]+]]
57
58if.then:
59; GEN: if.then:
60; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 2)
61  %call4 = call i32 @bar(i32 4)
62  br label %return
63
64if.end:
65; GEN: if.end:
66; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 3)
67  %call5 = call i32 @bar(i32 8)
68  br label %sw.epilog
69
70sw.default:
71; GEN: sw.default:
72; GEN-NOT: call void @llvm.instrprof.increment
73  %call6 = call i32 @bar(i32 32)
74  %cmp7 = icmp sgt i32 %j, 10
75  br i1 %cmp7, label %if.then8, label %if.end9
76; USE: br i1 %cmp7, label %if.then8, label %if.end9
77; USE-SAME: !prof ![[BW_SW_DEFAULT:[0-9]+]]
78
79if.then8:
80; GEN: if.then8:
81; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 7)
82  %add = add nsw i32 %call6, 10
83  br label %if.end9
84
85if.end9:
86; GEN: if.end9:
87; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @__profn_test_criticalEdge, i32 0, i32 0), i64 82323253069, i32 8, i32 6)
88  %res.0 = phi i32 [ %add, %if.then8 ], [ %call6, %sw.default ]
89  br label %sw.epilog
90
91sw.epilog:
92; GEN: sw.epilog:
93; GEN-NOT: call void @llvm.instrprof.increment
94  %res.1 = phi i32 [ %res.0, %if.end9 ], [ %call5, %if.end ], [ %call2, %sw.bb1 ], [ %call, %sw.bb ]
95  br label %return
96
97return:
98; GEN: return:
99; GEN-NOT: call void @llvm.instrprof.increment
100  %retval = phi i32 [ %res.1, %sw.epilog ], [ %call4, %if.then ]
101  ret i32 %retval
102}
103
104define internal i32 @bar(i32 %i) {
105entry:
106; GEN: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @__profn__stdin__bar, i32 0, i32 0), i64 12884901887, i32 1, i32 0)
107  ret i32 %i
108}
109
110; USE: ![[BW_SWITCH]] = !{!"branch_weights", i32 2, i32 1, i32 0, i32 2, i32 1, i32 1}
111; USE: ![[BW_SW_BB2]] = !{!"branch_weights", i32 2, i32 2}
112; USE: ![[BW_SW_DEFAULT]] = !{!"branch_weights", i32 1, i32 1}
113