forked from OSchip/llvm-project
318 lines
15 KiB
LLVM
318 lines
15 KiB
LLVM
|
; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/propagate.prof | opt -analyze -branch-prob | FileCheck %s
|
||
|
; RUN: opt < %s -passes=sample-profile -sample-profile-file=%S/Inputs/propagate.prof | opt -analyze -branch-prob | 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" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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" }
|
||
|
attributes #1 = { nounwind readnone }
|
||
|
attributes #2 = { norecurse uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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" }
|
||
|
attributes #3 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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)
|