1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316
|
; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/propagate.prof | opt -passes='print<branch-prob>' -disable-output 2>&1 | FileCheck %s
; Original C++ code for this test case:
;
; #include <stdio.h>
;
; long foo(int x, int y, long N) {
; if (x < y) {
; return y - x;
; } else {
; for (long i = 0; i < N; i++) {
; if (i > N / 3)
; x--;
; if (i > N / 4) {
; y++;
; x += 3;
; } else {
; for (unsigned j = 0; j < 100; j++) {
; x += j;
; y -= 3;
; }
; }
; }
; }
; return y * x;
; }
;
; int main() {
; int x = 5678;
; int y = 1234;
; long N = 9999999;
; printf("foo(%d, %d, %ld) = %ld\n", x, y, N, foo(x, y, N));
; return 0;
; }
; ModuleID = 'propagate.cc'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@.str = private unnamed_addr constant [24 x i8] c"foo(%d, %d, %ld) = %ld\0A\00", align 1
; Function Attrs: nounwind uwtable
define i64 @_Z3fooiil(i32 %x, i32 %y, i64 %N) #0 !dbg !6 {
entry:
%retval = alloca i64, align 8
%x.addr = alloca i32, align 4
%y.addr = alloca i32, align 4
%N.addr = alloca i64, align 8
%i = alloca i64, align 8
%j = alloca i64, align 8
store i32 %x, i32* %x.addr, align 4
call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !11, metadata !12), !dbg !13
store i32 %y, i32* %y.addr, align 4
call void @llvm.dbg.declare(metadata i32* %y.addr, metadata !14, metadata !12), !dbg !15
store i64 %N, i64* %N.addr, align 8
call void @llvm.dbg.declare(metadata i64* %N.addr, metadata !16, metadata !12), !dbg !17
%0 = load i32, i32* %x.addr, align 4, !dbg !18
%1 = load i32, i32* %y.addr, align 4, !dbg !20
%cmp = icmp slt i32 %0, %1, !dbg !21
br i1 %cmp, label %if.then, label %if.else, !dbg !22
if.then: ; preds = %entry
%2 = load i32, i32* %y.addr, align 4, !dbg !23
%3 = load i32, i32* %x.addr, align 4, !dbg !25
%sub = sub nsw i32 %2, %3, !dbg !26
%conv = sext i32 %sub to i64, !dbg !23
store i64 %conv, i64* %retval, align 8, !dbg !27
br label %return, !dbg !27
if.else: ; preds = %entry
call void @llvm.dbg.declare(metadata i64* %i, metadata !28, metadata !12), !dbg !31
store i64 0, i64* %i, align 8, !dbg !31
br label %for.cond, !dbg !32
for.cond: ; preds = %for.inc17, %if.else
%4 = load i64, i64* %i, align 8, !dbg !33
%5 = load i64, i64* %N.addr, align 8, !dbg !36
%cmp1 = icmp slt i64 %4, %5, !dbg !37
br i1 %cmp1, label %for.body, label %for.end19, !dbg !38
for.body: ; preds = %for.cond
%6 = load i64, i64* %i, align 8, !dbg !39
%7 = load i64, i64* %N.addr, align 8, !dbg !42
%div = sdiv i64 %7, 3, !dbg !43
%cmp2 = icmp sgt i64 %6, %div, !dbg !44
br i1 %cmp2, label %if.then3, label %if.end, !dbg !45
; CHECK: edge for.body -> if.then3 probability is 0x51292fa6 / 0x80000000 = 63.41%
; CHECK: edge for.body -> if.end probability is 0x2ed6d05a / 0x80000000 = 36.59%
if.then3: ; preds = %for.body
%8 = load i32, i32* %x.addr, align 4, !dbg !46
%dec = add nsw i32 %8, -1, !dbg !46
store i32 %dec, i32* %x.addr, align 4, !dbg !46
br label %if.end, !dbg !47
if.end: ; preds = %if.then3, %for.body
%9 = load i64, i64* %i, align 8, !dbg !48
%10 = load i64, i64* %N.addr, align 8, !dbg !50
%div4 = sdiv i64 %10, 4, !dbg !51
%cmp5 = icmp sgt i64 %9, %div4, !dbg !52
br i1 %cmp5, label %if.then6, label %if.else7, !dbg !53
; CHECK: edge if.end -> if.then6 probability is 0x5d89d89e / 0x80000000 = 73.08%
; CHECK: edge if.end -> if.else7 probability is 0x22762762 / 0x80000000 = 26.92%
if.then6: ; preds = %if.end
%11 = load i32, i32* %y.addr, align 4, !dbg !54
%inc = add nsw i32 %11, 1, !dbg !54
store i32 %inc, i32* %y.addr, align 4, !dbg !54
%12 = load i32, i32* %x.addr, align 4, !dbg !56
%add = add nsw i32 %12, 3, !dbg !56
store i32 %add, i32* %x.addr, align 4, !dbg !56
br label %if.end16, !dbg !57
if.else7: ; preds = %if.end
call void @llvm.dbg.declare(metadata i64* %j, metadata !58, metadata !12), !dbg !62
store i64 0, i64* %j, align 8, !dbg !62
br label %for.cond8, !dbg !63
for.cond8: ; preds = %for.inc, %if.else7
%13 = load i64, i64* %j, align 8, !dbg !64
%cmp9 = icmp slt i64 %13, 100, !dbg !67
br i1 %cmp9, label %for.body10, label %for.end, !dbg !68
; CHECK: edge for.cond8 -> for.body10 probability is 0x7e941a89 / 0x80000000 = 98.89% [HOT edge]
; CHECK: edge for.cond8 -> for.end probability is 0x016be577 / 0x80000000 = 1.11%
for.body10: ; preds = %for.cond8
%14 = load i64, i64* %j, align 8, !dbg !69
%15 = load i32, i32* %x.addr, align 4, !dbg !71
%conv11 = sext i32 %15 to i64, !dbg !71
%add12 = add nsw i64 %conv11, %14, !dbg !71
%conv13 = trunc i64 %add12 to i32, !dbg !71
store i32 %conv13, i32* %x.addr, align 4, !dbg !71
%16 = load i32, i32* %y.addr, align 4, !dbg !72
%sub14 = sub nsw i32 %16, 3, !dbg !72
store i32 %sub14, i32* %y.addr, align 4, !dbg !72
br label %for.inc, !dbg !73
for.inc: ; preds = %for.body10
%17 = load i64, i64* %j, align 8, !dbg !74
%inc15 = add nsw i64 %17, 1, !dbg !74
store i64 %inc15, i64* %j, align 8, !dbg !74
br label %for.cond8, !dbg !76
for.end: ; preds = %for.cond8
br label %if.end16
if.end16: ; preds = %for.end, %if.then6
br label %for.inc17, !dbg !77
for.inc17: ; preds = %if.end16
%18 = load i64, i64* %i, align 8, !dbg !78
%inc18 = add nsw i64 %18, 1, !dbg !78
store i64 %inc18, i64* %i, align 8, !dbg !78
br label %for.cond, !dbg !80
for.end19: ; preds = %for.cond
br label %if.end20
if.end20: ; preds = %for.end19
%19 = load i32, i32* %y.addr, align 4, !dbg !81
%20 = load i32, i32* %x.addr, align 4, !dbg !82
%mul = mul nsw i32 %19, %20, !dbg !83
%conv21 = sext i32 %mul to i64, !dbg !81
store i64 %conv21, i64* %retval, align 8, !dbg !84
br label %return, !dbg !84
return: ; preds = %if.end20, %if.then
%21 = load i64, i64* %retval, align 8, !dbg !85
ret i64 %21, !dbg !85
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
; Function Attrs: norecurse uwtable
define i32 @main() #2 !dbg !86 {
entry:
%retval = alloca i32, align 4
%x = alloca i32, align 4
%y = alloca i32, align 4
%N = alloca i64, align 8
store i32 0, i32* %retval, align 4
call void @llvm.dbg.declare(metadata i32* %x, metadata !89, metadata !12), !dbg !90
store i32 5678, i32* %x, align 4, !dbg !90
call void @llvm.dbg.declare(metadata i32* %y, metadata !91, metadata !12), !dbg !92
store i32 1234, i32* %y, align 4, !dbg !92
call void @llvm.dbg.declare(metadata i64* %N, metadata !93, metadata !12), !dbg !94
store i64 9999999, i64* %N, align 8, !dbg !94
%0 = load i32, i32* %x, align 4, !dbg !95
%1 = load i32, i32* %y, align 4, !dbg !96
%2 = load i64, i64* %N, align 8, !dbg !97
%3 = load i32, i32* %x, align 4, !dbg !98
%4 = load i32, i32* %y, align 4, !dbg !99
%5 = load i64, i64* %N, align 8, !dbg !100
%call = call i64 @_Z3fooiil(i32 %3, i32 %4, i64 %5), !dbg !101
%call1 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i32 0, i32 0), i32 %0, i32 %1, i64 %2, i64 %call), !dbg !102
ret i32 0, !dbg !104
}
declare i32 @printf(i8*, ...) #3
attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" "use-sample-profile" }
attributes #1 = { nounwind readnone }
attributes #2 = { norecurse uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" "use-sample-profile" }
attributes #3 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}
!llvm.ident = !{!5}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 (trunk 266819)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "propagate.cc", directory: ".")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{!"clang version 3.9.0 (trunk 266819)"}
!6 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooiil", scope: !1, file: !1, line: 3, type: !7, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
!7 = !DISubroutineType(types: !8)
!8 = !{!9, !10, !10, !9}
!9 = !DIBasicType(name: "long int", size: 64, align: 64, encoding: DW_ATE_signed)
!10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!11 = !DILocalVariable(name: "x", arg: 1, scope: !6, file: !1, line: 3, type: !10)
!12 = !DIExpression()
!13 = !DILocation(line: 3, column: 14, scope: !6)
!14 = !DILocalVariable(name: "y", arg: 2, scope: !6, file: !1, line: 3, type: !10)
!15 = !DILocation(line: 3, column: 21, scope: !6)
!16 = !DILocalVariable(name: "N", arg: 3, scope: !6, file: !1, line: 3, type: !9)
!17 = !DILocation(line: 3, column: 29, scope: !6)
!18 = !DILocation(line: 4, column: 7, scope: !19)
!19 = distinct !DILexicalBlock(scope: !6, file: !1, line: 4, column: 7)
!20 = !DILocation(line: 4, column: 11, scope: !19)
!21 = !DILocation(line: 4, column: 9, scope: !19)
!22 = !DILocation(line: 4, column: 7, scope: !6)
!23 = !DILocation(line: 5, column: 12, scope: !24)
!24 = distinct !DILexicalBlock(scope: !19, file: !1, line: 4, column: 14)
!25 = !DILocation(line: 5, column: 16, scope: !24)
!26 = !DILocation(line: 5, column: 14, scope: !24)
!27 = !DILocation(line: 5, column: 5, scope: !24)
!28 = !DILocalVariable(name: "i", scope: !29, file: !1, line: 7, type: !9)
!29 = distinct !DILexicalBlock(scope: !30, file: !1, line: 7, column: 5)
!30 = distinct !DILexicalBlock(scope: !19, file: !1, line: 6, column: 10)
!31 = !DILocation(line: 7, column: 15, scope: !29)
!32 = !DILocation(line: 7, column: 10, scope: !29)
!33 = !DILocation(line: 7, column: 22, scope: !34)
!34 = !DILexicalBlockFile(scope: !35, file: !1, discriminator: 2)
!35 = distinct !DILexicalBlock(scope: !29, file: !1, line: 7, column: 5)
!36 = !DILocation(line: 7, column: 26, scope: !34)
!37 = !DILocation(line: 7, column: 24, scope: !34)
!38 = !DILocation(line: 7, column: 5, scope: !34)
!39 = !DILocation(line: 8, column: 11, scope: !40)
!40 = distinct !DILexicalBlock(scope: !41, file: !1, line: 8, column: 11)
!41 = distinct !DILexicalBlock(scope: !35, file: !1, line: 7, column: 34)
!42 = !DILocation(line: 8, column: 15, scope: !40)
!43 = !DILocation(line: 8, column: 17, scope: !40)
!44 = !DILocation(line: 8, column: 13, scope: !40)
!45 = !DILocation(line: 8, column: 11, scope: !41)
!46 = !DILocation(line: 9, column: 10, scope: !40)
!47 = !DILocation(line: 9, column: 9, scope: !40)
!48 = !DILocation(line: 10, column: 11, scope: !49)
!49 = distinct !DILexicalBlock(scope: !41, file: !1, line: 10, column: 11)
!50 = !DILocation(line: 10, column: 15, scope: !49)
!51 = !DILocation(line: 10, column: 17, scope: !49)
!52 = !DILocation(line: 10, column: 13, scope: !49)
!53 = !DILocation(line: 10, column: 11, scope: !41)
!54 = !DILocation(line: 11, column: 10, scope: !55)
!55 = distinct !DILexicalBlock(scope: !49, file: !1, line: 10, column: 22)
!56 = !DILocation(line: 12, column: 11, scope: !55)
!57 = !DILocation(line: 13, column: 7, scope: !55)
!58 = !DILocalVariable(name: "j", scope: !59, file: !1, line: 14, type: !61)
!59 = distinct !DILexicalBlock(scope: !60, file: !1, line: 14, column: 9)
!60 = distinct !DILexicalBlock(scope: !49, file: !1, line: 13, column: 14)
!61 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed)
!62 = !DILocation(line: 14, column: 24, scope: !59)
!63 = !DILocation(line: 14, column: 14, scope: !59)
!64 = !DILocation(line: 14, column: 31, scope: !65)
!65 = !DILexicalBlockFile(scope: !66, file: !1, discriminator: 2)
!66 = distinct !DILexicalBlock(scope: !59, file: !1, line: 14, column: 9)
!67 = !DILocation(line: 14, column: 33, scope: !65)
!68 = !DILocation(line: 14, column: 9, scope: !65)
!69 = !DILocation(line: 15, column: 16, scope: !70)
!70 = distinct !DILexicalBlock(scope: !66, file: !1, line: 14, column: 45)
!71 = !DILocation(line: 15, column: 13, scope: !70)
!72 = !DILocation(line: 16, column: 13, scope: !70)
!73 = !DILocation(line: 17, column: 9, scope: !70)
!74 = !DILocation(line: 14, column: 41, scope: !75)
!75 = !DILexicalBlockFile(scope: !66, file: !1, discriminator: 4)
!76 = !DILocation(line: 14, column: 9, scope: !75)
!77 = !DILocation(line: 19, column: 5, scope: !41)
!78 = !DILocation(line: 7, column: 30, scope: !79)
!79 = !DILexicalBlockFile(scope: !35, file: !1, discriminator: 4)
!80 = !DILocation(line: 7, column: 5, scope: !79)
!81 = !DILocation(line: 21, column: 10, scope: !6)
!82 = !DILocation(line: 21, column: 14, scope: !6)
!83 = !DILocation(line: 21, column: 12, scope: !6)
!84 = !DILocation(line: 21, column: 3, scope: !6)
!85 = !DILocation(line: 22, column: 1, scope: !6)
!86 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 24, type: !87, isLocal: false, isDefinition: true, scopeLine: 24, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
!87 = !DISubroutineType(types: !88)
!88 = !{!10}
!89 = !DILocalVariable(name: "x", scope: !86, file: !1, line: 25, type: !10)
!90 = !DILocation(line: 25, column: 7, scope: !86)
!91 = !DILocalVariable(name: "y", scope: !86, file: !1, line: 26, type: !10)
!92 = !DILocation(line: 26, column: 7, scope: !86)
!93 = !DILocalVariable(name: "N", scope: !86, file: !1, line: 27, type: !9)
!94 = !DILocation(line: 27, column: 8, scope: !86)
!95 = !DILocation(line: 28, column: 38, scope: !86)
!96 = !DILocation(line: 28, column: 41, scope: !86)
!97 = !DILocation(line: 28, column: 44, scope: !86)
!98 = !DILocation(line: 28, column: 51, scope: !86)
!99 = !DILocation(line: 28, column: 54, scope: !86)
!100 = !DILocation(line: 28, column: 57, scope: !86)
!101 = !DILocation(line: 28, column: 47, scope: !86)
!102 = !DILocation(line: 28, column: 3, scope: !103)
!103 = !DILexicalBlockFile(scope: !86, file: !1, discriminator: 2)
!104 = !DILocation(line: 29, column: 3, scope: !86)
|