21b1ad0340
separate sections. For ThinLTO, all the function profiles without context has been annotated to outline functions if possible in prelink phase. In postlink phase, profile annotation in postlink phase is only meaningful for function profile with context. If the profile is large, it is better to split the profile into two parts, one with context and one without, so the profile reading in postlink phase only has to read the part with context. To have the profile splitting, we extend the ExtBinary format to support different section arrangement. It will be flexible to add other section layout in the future without the need to create new class inheriting from ExtBinary class. Differential Revision: https://reviews.llvm.org/D94435
60 lines
3.0 KiB
LLVM
60 lines
3.0 KiB
LLVM
; Check the nonflattened part of the ctxsplit profile will be read in thinlto
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; postlink phase while flattened part of the ctxsplit profile will not be read.
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; RUN: opt < %s -passes='thinlto<O2>' -pgo-kind=pgo-sample-use-pipeline -profile-file=%S/Inputs/ctxsplit.extbinary.afdo -S | FileCheck %s --check-prefix=POSTLINK
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;
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; Check both the flattened and nonflattened parts of the ctxsplit profile will
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; be read in thinlto prelink phase.
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; RUN: opt < %s -passes='thinlto-pre-link<O2>' -pgo-kind=pgo-sample-use-pipeline -profile-file=%S/Inputs/ctxsplit.extbinary.afdo -S | FileCheck %s --check-prefix=PRELINK
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;
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; Check both the flattened and nonflattened parts of the ctxsplit profile will
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; be read in non-thinlto mode.
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; RUN: opt < %s -passes='default<O2>' -pgo-kind=pgo-sample-use-pipeline -profile-file=%S/Inputs/ctxsplit.extbinary.afdo -S | FileCheck %s --check-prefix=NOTHINLTO
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; POSTLINK: define dso_local i32 @goo() {{.*}} !prof ![[ENTRY1:[0-9]+]] {
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; POSTLINK: define dso_local i32 @foo() {{.*}} !prof ![[ENTRY2:[0-9]+]] {
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; POSTLINK: ![[ENTRY1]] = !{!"function_entry_count", i64 1001}
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; POSTLINK: ![[ENTRY2]] = !{!"function_entry_count", i64 -1}
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; PRELINK: define dso_local i32 @goo() {{.*}} !prof ![[ENTRY1:[0-9]+]] {
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; PRELINK: define dso_local i32 @foo() {{.*}} !prof ![[ENTRY2:[0-9]+]] {
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; PRELINK: ![[ENTRY1]] = !{!"function_entry_count", i64 1001}
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; PRELINK: ![[ENTRY2]] = !{!"function_entry_count", i64 3001}
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; NOTHINLTO: define dso_local i32 @goo() {{.*}} !prof ![[ENTRY1:[0-9]+]] {
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; NOTHINLTO: define dso_local i32 @foo() {{.*}} !prof ![[ENTRY2:[0-9]+]] {
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; NOTHINLTO: ![[ENTRY1]] = !{!"function_entry_count", i64 1001}
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; NOTHINLTO: ![[ENTRY2]] = !{!"function_entry_count", i64 3001}
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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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; Function Attrs: norecurse nounwind readnone uwtable
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define dso_local i32 @goo() #0 !dbg !10 {
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entry:
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ret i32 -1, !dbg !11
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}
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; Function Attrs: norecurse nounwind readnone uwtable
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define dso_local i32 @foo() #0 !dbg !7 {
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entry:
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ret i32 -1, !dbg !9
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}
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attributes #0 = { "use-sample-profile" }
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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_C99, file: !1, producer: "clang version 8.0.0 (trunk 345241)", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "a.c", directory: "")
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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 8.0.0 (trunk 345241)"}
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!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: true, unit: !0, retainedNodes: !2)
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!8 = !DISubroutineType(types: !2)
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!9 = !DILocation(line: 2, column: 3, scope: !7)
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!10 = distinct !DISubprogram(name: "goo", scope: !1, file: !1, line: 8, type: !8, isLocal: false, isDefinition: true, scopeLine: 8, isOptimized: true, unit: !0, retainedNodes: !2)
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!11 = !DILocation(line: 10, column: 3, scope: !10)
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