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clang-p2996/llvm/test/Transforms/Inline/memprof_inline2.ll
Teresa Johnson 43417d8159 [MemProf] Update metadata during inlining 
Update both memprof and callsite metadata to reflect inlined functions.

For callsite metadata this is simply a concatenation of each cloned
call's call stack with that of the inlined callsite's.

For memprof metadata, each profiled memory info block (MIB) is either
moved to the cloned allocation call or left on the original allocation
call depending on whether its context matches the newly refined call
stack context on the cloned call. We also reapply context trimming
optimizations based on the refined set of contexts on each of the calls
(cloned and original).

Depends on D128142.

Reviewed By: snehasish

Differential Revision: https://reviews.llvm.org/D128143
2022-09-30 19:21:15 -07:00

317 lines
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;; Test for memprof metadata propagation, ensuring metadata is moved to
;; inlined callsites.
;; Also check that callsite metadata was updated with inlined stack ids.
;;
;; The following code was used to generate the following IR and its memprof
;; profile:
;;
;; #include <stdlib.h>
;; #include <string.h>
;; #include <unistd.h>
;; char *foo() {
;; return new char[10];
;; }
;; char *foo2() __attribute((noinline)) {
;; return foo();
;; }
;; char *bar() {
;; return foo2();
;; }
;; char *baz() {
;; return foo2();
;; }
;; int main(int argc, char **argv) {
;; char *c = foo();
;; char *d = foo();
;; char *e = bar();
;; char *f = baz();
;; memset(c, 0, 10);
;; memset(d, 0, 10);
;; memset(e, 0, 10);
;; memset(f, 0, 10);
;; delete[] c;
;; sleep(200);
;; delete[] d;
;; delete[] e;
;; delete[] f;
;; return 0;
;; }
; RUN: opt -inline %s -S | FileCheck %s
; ModuleID = 'memprof_inline2.cc'
source_filename = "memprof_inline2.cc"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Function Attrs: mustprogress uwtable
; CHECK-LABEL: define dso_local noundef i8* @_Z3foov
define dso_local noundef i8* @_Z3foov() #0 !dbg !39 {
entry:
;; We should still have memprof/callsite metadata for the non-inlined calls
;; from main, but should have removed those from the inlined call in_Z4foo2v.
;; CHECK: call {{.*}} @_Znam{{.*}} !memprof ![[ORIGMEMPROF:[0-9]+]]
%call = call noalias noundef nonnull i8* @_Znam(i64 noundef 10) #7, !dbg !42, !memprof !43, !callsite !52
ret i8* %call, !dbg !53
}
; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull i8* @_Znam(i64 noundef) #1
;; Mark noinline so we don't inline into calls from bar and baz. We should end
;; up with a memprof metadata on the call to foo below.
; Function Attrs: mustprogress noinline uwtable
; CHECK-LABEL: define dso_local noundef i8* @_Z4foo2v
define dso_local noundef i8* @_Z4foo2v() #2 !dbg !54 {
entry:
;; We should have memprof metadata for the call stacks from bar and baz,
;; and the callsite metadata should be the concatentation of the id from the
;; inlined call to new and the original callsite.
; CHECK: call {{.*}} @_Znam{{.*}} !memprof ![[NEWMEMPROF:[0-9]+]], !callsite ![[NEWCALLSITE:[0-9]+]]
%call = call noundef i8* @_Z3foov(), !dbg !55, !callsite !56
ret i8* %call, !dbg !57
}
; Function Attrs: mustprogress uwtable
define dso_local noundef i8* @_Z3barv() #0 !dbg !58 {
entry:
%call = call noundef i8* @_Z4foo2v(), !dbg !59, !callsite !60
ret i8* %call, !dbg !61
}
; Function Attrs: mustprogress uwtable
define dso_local noundef i8* @_Z3bazv() #0 !dbg !62 {
entry:
%call = call noundef i8* @_Z4foo2v(), !dbg !63, !callsite !64
ret i8* %call, !dbg !65
}
;; Make sure we don't propagate any memprof/callsite metadata
; Function Attrs: mustprogress uwtable
; CHECK-LABEL: define dso_local noundef i8* @notprofiled
define dso_local noundef i8* @notprofiled() #0 !dbg !66 {
entry:
; CHECK: call {{.*}} @_Znam
; CHECK-NOT: !memprof
; CHECK-NOT: !callsite
%call = call noundef i8* @_Z3foov(), !dbg !67
; CHECK-NEXT: ret
ret i8* %call, !dbg !68
}
; Function Attrs: mustprogress noinline norecurse optnone uwtable
define dso_local noundef i32 @main(i32 noundef %argc, i8** noundef %argv) #3 !dbg !69 {
entry:
%retval = alloca i32, align 4
%argc.addr = alloca i32, align 4
%argv.addr = alloca i8**, align 8
%c = alloca i8*, align 8
%d = alloca i8*, align 8
%e = alloca i8*, align 8
%f = alloca i8*, align 8
store i32 0, i32* %retval, align 4
store i32 %argc, i32* %argc.addr, align 4
store i8** %argv, i8*** %argv.addr, align 8
;; The below 4 callsites are all annotated as noinline
%call = call noundef i8* @_Z3foov() #8, !dbg !70, !callsite !71
store i8* %call, i8** %c, align 8, !dbg !72
%call1 = call noundef i8* @_Z3foov() #8, !dbg !73, !callsite !74
store i8* %call1, i8** %d, align 8, !dbg !75
%call2 = call noundef i8* @_Z3barv() #8, !dbg !76, !callsite !77
store i8* %call2, i8** %e, align 8, !dbg !78
%call3 = call noundef i8* @_Z3bazv() #8, !dbg !79, !callsite !80
store i8* %call3, i8** %f, align 8, !dbg !81
%0 = load i8*, i8** %c, align 8, !dbg !82
call void @llvm.memset.p0i8.i64(i8* align 1 %0, i8 0, i64 10, i1 false), !dbg !83
%1 = load i8*, i8** %d, align 8, !dbg !84
call void @llvm.memset.p0i8.i64(i8* align 1 %1, i8 0, i64 10, i1 false), !dbg !85
%2 = load i8*, i8** %e, align 8, !dbg !86
call void @llvm.memset.p0i8.i64(i8* align 1 %2, i8 0, i64 10, i1 false), !dbg !87
%3 = load i8*, i8** %f, align 8, !dbg !88
call void @llvm.memset.p0i8.i64(i8* align 1 %3, i8 0, i64 10, i1 false), !dbg !89
%4 = load i8*, i8** %c, align 8, !dbg !90
%isnull = icmp eq i8* %4, null, !dbg !91
br i1 %isnull, label %delete.end, label %delete.notnull, !dbg !91
delete.notnull: ; preds = %entry
call void @_ZdaPv(i8* noundef %4) #9, !dbg !92
br label %delete.end, !dbg !92
delete.end: ; preds = %delete.notnull, %entry
%call4 = call i32 @sleep(i32 noundef 200), !dbg !94
%5 = load i8*, i8** %d, align 8, !dbg !95
%isnull5 = icmp eq i8* %5, null, !dbg !96
br i1 %isnull5, label %delete.end7, label %delete.notnull6, !dbg !96
delete.notnull6: ; preds = %delete.end
call void @_ZdaPv(i8* noundef %5) #9, !dbg !97
br label %delete.end7, !dbg !97
delete.end7: ; preds = %delete.notnull6, %delete.end
%6 = load i8*, i8** %e, align 8, !dbg !98
%isnull8 = icmp eq i8* %6, null, !dbg !99
br i1 %isnull8, label %delete.end10, label %delete.notnull9, !dbg !99
delete.notnull9: ; preds = %delete.end7
call void @_ZdaPv(i8* noundef %6) #9, !dbg !100
br label %delete.end10, !dbg !100
delete.end10: ; preds = %delete.notnull9, %delete.end7
%7 = load i8*, i8** %f, align 8, !dbg !101
%isnull11 = icmp eq i8* %7, null, !dbg !102
br i1 %isnull11, label %delete.end13, label %delete.notnull12, !dbg !102
delete.notnull12: ; preds = %delete.end10
call void @_ZdaPv(i8* noundef %7) #9, !dbg !103
br label %delete.end13, !dbg !103
delete.end13: ; preds = %delete.notnull12, %delete.end10
ret i32 0, !dbg !104
}
; Function Attrs: argmemonly nofree nounwind willreturn writeonly
declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg) #4
; Function Attrs: nobuiltin nounwind
declare void @_ZdaPv(i8* noundef) #5
declare i32 @sleep(i32 noundef) #6
attributes #0 = { mustprogress uwtable "disable-tail-calls"="true" "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nobuiltin allocsize(0) "disable-tail-calls"="true" "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { mustprogress noinline uwtable "disable-tail-calls"="true" "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { mustprogress noinline norecurse optnone uwtable "disable-tail-calls"="true" "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { argmemonly nofree nounwind willreturn writeonly }
attributes #5 = { nobuiltin nounwind "disable-tail-calls"="true" "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { "disable-tail-calls"="true" "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #7 = { builtin allocsize(0) }
attributes #8 = { noinline }
attributes #9 = { builtin nounwind }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2, !3, !4, !5, !6, !7, !8, !9}
!llvm.ident = !{!38}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 15.0.0 (https://github.com/llvm/llvm-project.git e09c924f98ec157adeaa74819b0aec9a07a1b552)", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, splitDebugInlining: false, debugInfoForProfiling: true, nameTableKind: None)
!1 = !DIFile(filename: "memprof_inline.cc", directory: "/usr/local/google/home/tejohnson/llvm/tmp", checksumkind: CSK_MD5, checksum: "8711f6fd269e6cb5611fef48bc906eab")
!2 = !{i32 7, !"Dwarf Version", i32 5}
!3 = !{i32 2, !"Debug Info Version", i32 3}
!4 = !{i32 1, !"wchar_size", i32 4}
!5 = !{i32 7, !"PIC Level", i32 2}
!6 = !{i32 7, !"PIE Level", i32 2}
!7 = !{i32 7, !"uwtable", i32 2}
!8 = !{i32 7, !"frame-pointer", i32 2}
!9 = !{i32 1, !"ProfileSummary", !10}
!10 = !{!11, !12, !13, !14, !15, !16, !17, !18, !19, !20}
!11 = !{!"ProfileFormat", !"InstrProf"}
!12 = !{!"TotalCount", i64 0}
!13 = !{!"MaxCount", i64 0}
!14 = !{!"MaxInternalCount", i64 0}
!15 = !{!"MaxFunctionCount", i64 0}
!16 = !{!"NumCounts", i64 0}
!17 = !{!"NumFunctions", i64 0}
!18 = !{!"IsPartialProfile", i64 0}
!19 = !{!"PartialProfileRatio", double 0.000000e+00}
!20 = !{!"DetailedSummary", !21}
!21 = !{!22, !23, !24, !25, !26, !27, !28, !29, !30, !31, !32, !33, !34, !35, !36, !37}
!22 = !{i32 10000, i64 0, i32 0}
!23 = !{i32 100000, i64 0, i32 0}
!24 = !{i32 200000, i64 0, i32 0}
!25 = !{i32 300000, i64 0, i32 0}
!26 = !{i32 400000, i64 0, i32 0}
!27 = !{i32 500000, i64 0, i32 0}
!28 = !{i32 600000, i64 0, i32 0}
!29 = !{i32 700000, i64 0, i32 0}
!30 = !{i32 800000, i64 0, i32 0}
!31 = !{i32 900000, i64 0, i32 0}
!32 = !{i32 950000, i64 0, i32 0}
!33 = !{i32 990000, i64 0, i32 0}
!34 = !{i32 999000, i64 0, i32 0}
!35 = !{i32 999900, i64 0, i32 0}
!36 = !{i32 999990, i64 0, i32 0}
!37 = !{i32 999999, i64 0, i32 0}
!38 = !{!"clang version 15.0.0 (https://github.com/llvm/llvm-project.git e09c924f98ec157adeaa74819b0aec9a07a1b552)"}
!39 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov", scope: !1, file: !1, line: 4, type: !40, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !41)
!40 = !DISubroutineType(types: !41)
!41 = !{}
!42 = !DILocation(line: 5, column: 10, scope: !39)
;; The first 2 are from the direct calls to foo from main. Those stay on the
;; callsite in foo, which isn't inlined into main due to the callsites in main
;; being annotated as noinline.
;; The second 2 are from the calls from foo2, which inlines its callsite to foo
;; but is not itself inlined into its callers. Therefore they get moved to a
;; new memprof metadata within foo2.
!43 = !{!44, !46, !48, !50}
!44 = !{!45, !"cold"}
!45 = !{i64 -2458008693472584243, i64 7394638144382192936}
!46 = !{!47, !"noncold"}
!47 = !{i64 -2458008693472584243, i64 -8908997186479157179}
!48 = !{!49, !"noncold"}
!49 = !{i64 -2458008693472584243, i64 -8079659623765193173, i64 -4805294506621015872}
!50 = !{!51, !"cold"}
!51 = !{i64 -2458008693472584243, i64 -8079659623765193173, i64 -972865200055133905}
; CHECK: ![[ORIGMEMPROF]] = !{![[ORIGMIB1:[0-9]+]], ![[ORIGMIB2:[0-9]+]]}
; CHECK: ![[ORIGMIB1]] = !{![[ORIGMIBSTACK1:[0-9]+]], !"cold"}
; CHECK: ![[ORIGMIBSTACK1]] = !{i64 -2458008693472584243, i64 7394638144382192936}
; CHECK: ![[ORIGMIB2]] = !{![[ORIGMIBSTACK2:[0-9]+]], !"notcold"}
; CHECK: ![[ORIGMIBSTACK2]] = !{i64 -2458008693472584243, i64 -8908997186479157179}
; CHECK: ![[NEWMEMPROF]] = !{![[NEWMIB1:[0-9]+]], ![[NEWMIB2:[0-9]+]]}
; CHECK: ![[NEWMIB1]] = !{![[NEWMIBSTACK1:[0-9]+]], !"notcold"}
; CHECK: ![[NEWMIBSTACK1]] = !{i64 -2458008693472584243, i64 -8079659623765193173, i64 -4805294506621015872}
; CHECK: ![[NEWMIB2]] = !{![[NEWMIBSTACK2:[0-9]+]], !"cold"}
; CHECK: ![[NEWMIBSTACK2]] = !{i64 -2458008693472584243, i64 -8079659623765193173, i64 -972865200055133905}
; CHECK: ![[NEWCALLSITE]] = !{i64 -2458008693472584243, i64 -8079659623765193173}
!52 = !{i64 -2458008693472584243}
!53 = !DILocation(line: 5, column: 3, scope: !39)
!54 = distinct !DISubprogram(name: "foo2", linkageName: "_Z4foo2v", scope: !1, file: !1, line: 7, type: !40, scopeLine: 7, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !41)
!55 = !DILocation(line: 8, column: 10, scope: !54)
!56 = !{i64 -8079659623765193173}
!57 = !DILocation(line: 8, column: 3, scope: !54)
!58 = distinct !DISubprogram(name: "bar", linkageName: "_Z3barv", scope: !1, file: !1, line: 10, type: !40, scopeLine: 10, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !41)
!59 = !DILocation(line: 11, column: 10, scope: !58)
!60 = !{i64 -972865200055133905}
!61 = !DILocation(line: 11, column: 3, scope: !58)
!62 = distinct !DISubprogram(name: "baz", linkageName: "_Z3bazv", scope: !1, file: !1, line: 13, type: !40, scopeLine: 13, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !41)
!63 = !DILocation(line: 14, column: 10, scope: !62)
!64 = !{i64 -4805294506621015872}
!65 = !DILocation(line: 14, column: 3, scope: !62)
!66 = distinct !DISubprogram(name: "notprofiled", linkageName: "notprofiled", scope: !1, file: !1, line: 400, type: !40, scopeLine: 400, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !41)
!67 = !DILocation(line: 401, column: 10, scope: !66)
!68 = !DILocation(line: 401, column: 3, scope: !66)
!69 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 16, type: !40, scopeLine: 16, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !41)
!70 = !DILocation(line: 17, column: 13, scope: !69)
!71 = !{i64 -8908997186479157179}
!72 = !DILocation(line: 17, column: 9, scope: !69)
!73 = !DILocation(line: 18, column: 13, scope: !69)
!74 = !{i64 7394638144382192936}
!75 = !DILocation(line: 18, column: 9, scope: !69)
!76 = !DILocation(line: 19, column: 13, scope: !69)
!77 = !{i64 -5510257407004945023}
!78 = !DILocation(line: 19, column: 9, scope: !69)
!79 = !DILocation(line: 20, column: 13, scope: !69)
!80 = !{i64 8771588133652501463}
!81 = !DILocation(line: 20, column: 9, scope: !69)
!82 = !DILocation(line: 21, column: 10, scope: !69)
!83 = !DILocation(line: 21, column: 3, scope: !69)
!84 = !DILocation(line: 22, column: 10, scope: !69)
!85 = !DILocation(line: 22, column: 3, scope: !69)
!86 = !DILocation(line: 23, column: 10, scope: !69)
!87 = !DILocation(line: 23, column: 3, scope: !69)
!88 = !DILocation(line: 24, column: 10, scope: !69)
!89 = !DILocation(line: 24, column: 3, scope: !69)
!90 = !DILocation(line: 25, column: 12, scope: !69)
!91 = !DILocation(line: 25, column: 3, scope: !69)
!92 = !DILocation(line: 25, column: 3, scope: !93)
!93 = !DILexicalBlockFile(scope: !69, file: !1, discriminator: 2)
!94 = !DILocation(line: 26, column: 3, scope: !69)
!95 = !DILocation(line: 27, column: 12, scope: !69)
!96 = !DILocation(line: 27, column: 3, scope: !69)
!97 = !DILocation(line: 27, column: 3, scope: !93)
!98 = !DILocation(line: 28, column: 12, scope: !69)
!99 = !DILocation(line: 28, column: 3, scope: !69)
!100 = !DILocation(line: 28, column: 3, scope: !93)
!101 = !DILocation(line: 29, column: 12, scope: !69)
!102 = !DILocation(line: 29, column: 3, scope: !69)
!103 = !DILocation(line: 29, column: 3, scope: !93)
!104 = !DILocation(line: 30, column: 3, scope: !69)
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