798e59b81f
cold versus function being newly added. This is the second half of https://reviews.llvm.org/D66374. Profile symbol list is the collection of function symbols showing up in the binary which generates the current profile. It is used to discriminate function being cold versus function being newly added. Profile symbol list is only added for profile with ExtBinary format. During profile use compilation, when profile-sample-accurate is enabled, a function without profile will be regarded as cold only when it is contained in that list. Differential Revision: https://reviews.llvm.org/D66766 llvm-svn: 370563
135 lines
8.0 KiB
LLVM
135 lines
8.0 KiB
LLVM
; Original C++ test case
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;
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; #include <stdio.h>
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;
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; __attribute__((noinline)) int goo() { return 3 };
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; __attribute__((noinline)) int hoo() { return 4 };
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;
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; int sum(int x, int y) {
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; return x + y;
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; }
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;
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; int main() {
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; int s, i = 0;
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; while (i++ < 20000 * 20000)
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; if (i != 100) s = sum(i, s); else s = 30;
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; printf("sum is %d\n", s);
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; return goo() + hoo() != 7;
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; }
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;
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; Both goo and hoo don't show up in the input profile.
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; Suppose function goo shows up in the binary generating the input profile
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; and function hoo doesn't show up. Then the profile symbol list in the input
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; profile will contain goo but not hoo. Verify the entry count of goo is
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; 0 and the entry count of hoo is -1.
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; CHECK: define {{.*}} i32 @_Z3goov() {{.*}} !prof ![[IDX1:[0-9]*]]
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; CHECK: define {{.*}} i32 @_Z3hoov() {{.*}} !prof ![[IDX2:[0-9]*]]
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; CHECK: ![[IDX1]] = !{!"function_entry_count", i64 0}
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; CHECK: ![[IDX2]] = !{!"function_entry_count", i64 -1}
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@.str = private unnamed_addr constant [11 x i8] c"sum is %d\0A\00", align 1
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; Function Attrs: noinline norecurse nounwind readnone uwtable
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define dso_local i32 @_Z3goov() local_unnamed_addr #0 !dbg !7 {
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entry:
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ret i32 3, !dbg !9
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}
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; Function Attrs: noinline norecurse nounwind readnone uwtable
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define dso_local i32 @_Z3hoov() local_unnamed_addr #0 !dbg !10 {
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entry:
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ret i32 4, !dbg !11
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}
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; Function Attrs: norecurse nounwind readnone uwtable
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define dso_local i32 @_Z3sumii(i32 %x, i32 %y) local_unnamed_addr #1 !dbg !12 {
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entry:
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%add = add nsw i32 %y, %x, !dbg !13
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ret i32 %add, !dbg !14
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}
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; Function Attrs: nofree norecurse nounwind uwtable
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define dso_local i32 @main() local_unnamed_addr #2 !dbg !15 {
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entry:
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br label %while.body, !dbg !16
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while.body: ; preds = %while.body, %entry
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%inc12 = phi i32 [ 1, %entry ], [ %inc.4, %while.body ]
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%s.011 = phi i32 [ undef, %entry ], [ %spec.select.4, %while.body ]
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%cmp1 = icmp eq i32 %inc12, 100, !dbg !18
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%add.i = add nsw i32 %inc12, %s.011, !dbg !20
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%spec.select = select i1 %cmp1, i32 30, i32 %add.i, !dbg !23
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%inc = add nuw nsw i32 %inc12, 1, !dbg !24
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%cmp1.1 = icmp eq i32 %inc, 100, !dbg !18
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%add.i.1 = add nsw i32 %inc, %spec.select, !dbg !20
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%spec.select.1 = select i1 %cmp1.1, i32 30, i32 %add.i.1, !dbg !23
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%inc.1 = add nuw nsw i32 %inc12, 2, !dbg !24
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%cmp1.2 = icmp eq i32 %inc.1, 100, !dbg !18
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%add.i.2 = add nsw i32 %inc.1, %spec.select.1, !dbg !20
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%spec.select.2 = select i1 %cmp1.2, i32 30, i32 %add.i.2, !dbg !23
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%inc.2 = add nuw nsw i32 %inc12, 3, !dbg !24
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%cmp1.3 = icmp eq i32 %inc.2, 100, !dbg !18
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%add.i.3 = add nsw i32 %inc.2, %spec.select.2, !dbg !20
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%spec.select.3 = select i1 %cmp1.3, i32 30, i32 %add.i.3, !dbg !23
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%inc.3 = add nuw nsw i32 %inc12, 4, !dbg !24
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%cmp1.4 = icmp eq i32 %inc.3, 100, !dbg !18
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%add.i.4 = add nsw i32 %inc.3, %spec.select.3, !dbg !20
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%spec.select.4 = select i1 %cmp1.4, i32 30, i32 %add.i.4, !dbg !23
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%inc.4 = add nuw nsw i32 %inc12, 5, !dbg !24
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%exitcond.4 = icmp eq i32 %inc.4, 400000001, !dbg !26
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br i1 %exitcond.4, label %while.end, label %while.body, !dbg !27, !llvm.loop !28
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while.end: ; preds = %while.body
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%call2 = tail call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %spec.select.4), !dbg !31
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ret i32 0, !dbg !32
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}
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; Function Attrs: nofree nounwind
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declare dso_local i32 @printf(i8* nocapture readonly, ...) local_unnamed_addr #3
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attributes #0 = { noinline norecurse nounwind readnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { norecurse nounwind readnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nofree norecurse nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #3 = { nofree nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 10.0.0 (trunk 369144)", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2, debugInfoForProfiling: true, nameTableKind: None)
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!1 = !DIFile(filename: "1.cc", directory: "/usr/local/google/home/wmi/workarea/llvm-r369144/src")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 10.0.0 (trunk 369144)"}
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!7 = distinct !DISubprogram(name: "goo", linkageName: "_Z3goov", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!8 = !DISubroutineType(types: !2)
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!9 = !DILocation(line: 3, column: 39, scope: !7)
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!10 = distinct !DISubprogram(name: "hoo", linkageName: "_Z3hoov", scope: !1, file: !1, line: 4, type: !8, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!11 = !DILocation(line: 4, column: 39, scope: !10)
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!12 = distinct !DISubprogram(name: "sum", linkageName: "_Z3sumii", scope: !1, file: !1, line: 6, type: !8, scopeLine: 6, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!13 = !DILocation(line: 7, column: 12, scope: !12)
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!14 = !DILocation(line: 7, column: 3, scope: !12)
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!15 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 10, type: !8, scopeLine: 10, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!16 = !DILocation(line: 12, column: 3, scope: !17)
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!17 = !DILexicalBlockFile(scope: !15, file: !1, discriminator: 2)
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!18 = !DILocation(line: 13, column: 11, scope: !19)
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!19 = !DILexicalBlockFile(scope: !15, file: !1, discriminator: 21)
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!20 = !DILocation(line: 7, column: 12, scope: !21, inlinedAt: !22)
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!21 = !DILexicalBlockFile(scope: !12, file: !1, discriminator: 21)
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!22 = distinct !DILocation(line: 13, column: 23, scope: !17)
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!23 = !DILocation(line: 13, column: 9, scope: !19)
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!24 = !DILocation(line: 12, column: 11, scope: !25)
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!25 = !DILexicalBlockFile(scope: !15, file: !1, discriminator: 1282)
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!26 = !DILocation(line: 12, column: 14, scope: !25)
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!27 = !DILocation(line: 12, column: 3, scope: !25)
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!28 = distinct !{!28, !29, !30}
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!29 = !DILocation(line: 12, column: 3, scope: !15)
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!30 = !DILocation(line: 13, column: 43, scope: !15)
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!31 = !DILocation(line: 14, column: 3, scope: !15)
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!32 = !DILocation(line: 15, column: 3, scope: !15)
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