08379d6430
This patch adds a test to verify that the call site that allocates cold bytes is annotated as such. The test is the first of its kind integrating the memprof-use pass and YAML.
48 lines
1.7 KiB
Plaintext
48 lines
1.7 KiB
Plaintext
; REQUIRES: x86_64-linux
|
|
|
|
; Make sure that we can ingest the MemProf profile in YAML and
|
|
; annotate a call to new as cold.
|
|
|
|
; RUN: split-file %s %t
|
|
; RUN: llvm-profdata merge %t/memprof_annotate_yaml.yaml -o %t/memprof_annotate_yaml.memprofdata
|
|
; RUN: opt < %t/memprof_annotate_yaml.ll -passes='memprof-use<profile-filename=%t/memprof_annotate_yaml.memprofdata>' -S 2>&1 | FileCheck %s
|
|
|
|
;--- memprof_annotate_yaml.yaml
|
|
---
|
|
HeapProfileRecords:
|
|
- GUID: _Z3foov
|
|
AllocSites:
|
|
- Callstack:
|
|
- { Function: _Z3foov, LineOffset: 0, Column: 22, IsInlineFrame: false }
|
|
- { Function: main, LineOffset: 2, Column: 5, IsInlineFrame: false }
|
|
MemInfoBlock:
|
|
# With these numbers, llvm::memprof::getAllocType will determine that
|
|
# the call to new is cold. See MemoryProfileInfo.cpp for details.
|
|
TotalSize: 400
|
|
AllocCount: 1
|
|
TotalLifetimeAccessDensity: 1
|
|
TotalLifetime: 1000000
|
|
CallSites: []
|
|
...
|
|
;--- memprof_annotate_yaml.ll
|
|
define dso_local ptr @_Z3foov() !dbg !4 {
|
|
entry:
|
|
%call = call ptr @_Znam(i64 4) #0, !dbg !5
|
|
; CHECK: call ptr @_Znam(i64 4) #[[ATTR:[0-9]+]],
|
|
ret ptr %call
|
|
}
|
|
|
|
declare ptr @_Znam(i64)
|
|
|
|
attributes #0 = { builtin allocsize(0) }
|
|
; CHECK: attributes #[[ATTR]] = {{.*}} "memprof"="cold"
|
|
|
|
!llvm.module.flags = !{!2, !3}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1)
|
|
!1 = !DIFile(filename: "t", directory: "/")
|
|
!2 = !{i32 7, !"Dwarf Version", i32 5}
|
|
!3 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov", scope: !1, file: !1, line: 1, unit: !0)
|
|
!5 = !DILocation(line: 1, column: 22, scope: !4)
|