1; The two profiles used in this test are the same but encoded in different
2; formats. This checks that we produce the same profile annotations regardless
3; of the profile format.
4;
5; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/fnptr.prof | opt -analyze -branch-prob | FileCheck %s
6; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/fnptr.binprof | opt -analyze -branch-prob | FileCheck %s
7
8; CHECK:   edge for.body3 -> if.then probability is 534 / 2598 = 20.5543%
9; CHECK:   edge for.body3 -> if.else probability is 2064 / 2598 = 79.4457%
10; CHECK:   edge for.inc -> for.inc12 probability is 1052 / 2598 = 40.4927%
11; CHECK:   edge for.inc -> for.body3 probability is 1546 / 2598 = 59.5073%
12; CHECK:   edge for.inc12 -> for.end14 probability is 518 / 1052 = 49.2395%
13; CHECK:   edge for.inc12 -> for.cond1.preheader probability is 534 / 1052 = 50.7605%
14
15; Original C++ test case.
16;
17; #include <stdlib.h>
18; #include <math.h>
19; #include <stdio.h>
20;
21; #define N 10000
22; #define M 6000
23;
24; double foo(int x) {
25;   return x * sin((double)x);
26; }
27;
28; double bar(int x) {
29;   return x - cos((double)x);
30; }
31;
32; int main() {
33;   double (*fptr)(int);
34;   double S = 0;
35;   for (int i = 0; i < N; i++)
36;     for (int j = 0; j < M; j++) {
37;       fptr = (rand() % 100 < 30) ? foo : bar;
38;       if (rand() % 100 < 10)
39;         S += (*fptr)(i + j * 300);
40;       else
41;         S += (*fptr)(i - j / 840);
42;     }
43;   printf("S = %lf\n", S);
44;   return 0;
45; }
46
47@.str = private unnamed_addr constant [9 x i8] c"S = %lf\0A\00", align 1
48
49define double @_Z3fooi(i32 %x) #0 {
50entry:
51  %conv = sitofp i32 %x to double, !dbg !2
52  %call = tail call double @sin(double %conv) #3, !dbg !8
53  %mul = fmul double %conv, %call, !dbg !8
54  ret double %mul, !dbg !8
55}
56
57declare double @sin(double) #1
58
59define double @_Z3bari(i32 %x) #0 {
60entry:
61  %conv = sitofp i32 %x to double, !dbg !9
62  %call = tail call double @cos(double %conv) #3, !dbg !11
63  %sub = fsub double %conv, %call, !dbg !11
64  ret double %sub, !dbg !11
65}
66
67declare double @cos(double) #1
68
69define i32 @main() #2 {
70entry:
71  br label %for.cond1.preheader, !dbg !12
72
73for.cond1.preheader:                              ; preds = %for.inc12, %entry
74  %i.025 = phi i32 [ 0, %entry ], [ %inc13, %for.inc12 ]
75  %S.024 = phi double [ 0.000000e+00, %entry ], [ %S.2.lcssa, %for.inc12 ]
76  br label %for.body3, !dbg !14
77
78for.body3:                                        ; preds = %for.inc, %for.cond1.preheader
79  %j.023 = phi i32 [ 0, %for.cond1.preheader ], [ %inc, %for.inc ]
80  %S.122 = phi double [ %S.024, %for.cond1.preheader ], [ %S.2, %for.inc ]
81  %call = tail call i32 @rand() #3, !dbg !15
82  %rem = srem i32 %call, 100, !dbg !15
83  %cmp4 = icmp slt i32 %rem, 30, !dbg !15
84  %_Z3fooi._Z3bari = select i1 %cmp4, double (i32)* @_Z3fooi, double (i32)* @_Z3bari, !dbg !15
85  %call5 = tail call i32 @rand() #3, !dbg !16
86  %rem6 = srem i32 %call5, 100, !dbg !16
87  %cmp7 = icmp slt i32 %rem6, 10, !dbg !16
88  br i1 %cmp7, label %if.then, label %if.else, !dbg !16, !prof !17
89
90if.then:                                          ; preds = %for.body3
91  %mul = mul nsw i32 %j.023, 300, !dbg !18
92  %add = add nsw i32 %mul, %i.025, !dbg !18
93  %call8 = tail call double %_Z3fooi._Z3bari(i32 %add), !dbg !18
94  br label %for.inc, !dbg !18
95
96if.else:                                          ; preds = %for.body3
97  %div = sdiv i32 %j.023, 840, !dbg !19
98  %sub = sub nsw i32 %i.025, %div, !dbg !19
99  %call10 = tail call double %_Z3fooi._Z3bari(i32 %sub), !dbg !19
100  br label %for.inc
101
102for.inc:                                          ; preds = %if.then, %if.else
103  %call8.pn = phi double [ %call8, %if.then ], [ %call10, %if.else ]
104  %S.2 = fadd double %S.122, %call8.pn, !dbg !18
105  %inc = add nsw i32 %j.023, 1, !dbg !20
106  %exitcond = icmp eq i32 %j.023, 5999, !dbg !14
107  br i1 %exitcond, label %for.inc12, label %for.body3, !dbg !14, !prof !21
108
109for.inc12:                                        ; preds = %for.inc
110  %S.2.lcssa = phi double [ %S.2, %for.inc ]
111  %inc13 = add nsw i32 %i.025, 1, !dbg !22
112  %exitcond26 = icmp eq i32 %i.025, 9999, !dbg !12
113  br i1 %exitcond26, label %for.end14, label %for.cond1.preheader, !dbg !12, !prof !23
114
115for.end14:                                        ; preds = %for.inc12
116  %S.2.lcssa.lcssa = phi double [ %S.2.lcssa, %for.inc12 ]
117  %call15 = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([9 x i8]* @.str, i64 0, i64 0), double %S.2.lcssa.lcssa), !dbg !24
118  ret i32 0, !dbg !25
119}
120
121; Function Attrs: nounwind
122declare i32 @rand() #1
123
124; Function Attrs: nounwind
125declare i32 @printf(i8* nocapture readonly, ...) #1
126
127!llvm.module.flags = !{!0}
128!llvm.ident = !{!1}
129
130!0 = !{i32 2, !"Debug Info Version", i32 2}
131!1 = !{!"clang version 3.6.0 "}
132!2 = !MDLocation(line: 9, column: 3, scope: !3)
133!3 = !{!"0x2e\00foo\00foo\00\008\000\001\000\000\00256\001\008", !4, !5, !6, null, double (i32)* @_Z3fooi, null, null, !7} ; [ DW_TAG_subprogram ] [line 8] [def] [foo]
134!4 = !{!"fnptr.cc", !"."}
135!5 = !{!"0x29", !4}    ; [ DW_TAG_file_type ] [./fnptr.cc]
136!6 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
137!7 = !{}
138!8 = !MDLocation(line: 9, column: 14, scope: !3)
139!9 = !MDLocation(line: 13, column: 3, scope: !10)
140!10 = !{!"0x2e\00bar\00bar\00\0012\000\001\000\000\00256\001\0012", !4, !5, !6, null, double (i32)* @_Z3bari, null, null, !7} ; [ DW_TAG_subprogram ] [line 12] [def] [bar]
141!11 = !MDLocation(line: 13, column: 14, scope: !10)
142!12 = !MDLocation(line: 19, column: 3, scope: !13)
143!13 = !{!"0x2e\00main\00main\00\0016\000\001\000\000\00256\001\0016", !4, !5, !6, null, i32 ()* @main, null, null, !7} ; [ DW_TAG_subprogram ] [line 16] [def] [main]
144!14 = !MDLocation(line: 20, column: 5, scope: !13)
145!15 = !MDLocation(line: 21, column: 15, scope: !13)
146!16 = !MDLocation(line: 22, column: 11, scope: !13)
147!17 = !{!"branch_weights", i32 534, i32 2064}
148!18 = !MDLocation(line: 23, column: 14, scope: !13)
149!19 = !MDLocation(line: 25, column: 14, scope: !13)
150!20 = !MDLocation(line: 20, column: 28, scope: !13)
151!21 = !{!"branch_weights", i32 0, i32 1075}
152!22 = !MDLocation(line: 19, column: 26, scope: !13)
153!23 = !{!"branch_weights", i32 0, i32 534}
154!24 = !MDLocation(line: 27, column: 3, scope: !13)
155!25 = !MDLocation(line: 28, column: 3, scope: !13)
156