call-graph-profile-section.yaml 6.71 KB
## Test how we create SHT_LLVM_CALL_GRAPH_PROFILE sections.

## Test that the content of SHT_LLVM_CALL_GRAPH_PROFILE sections
## for 32/64-bit little/big endian targets is correct.
# RUN: yaml2obj --docnum=1 -D BITS=64 -D ENCODE=LSB %s -o %t.le64
# RUN: llvm-readobj --cg-profile --sections --section-data %t.le64 | FileCheck %s --check-prefixes=BASIC,BASIC-LE
# RUN: yaml2obj --docnum=1 -D BITS=64 -D ENCODE=MSB %s -o %t.be64                      
# RUN: llvm-readobj --cg-profile --sections --section-data %t.be64 | FileCheck %s --check-prefixes=BASIC,BASIC-BE
# RUN: yaml2obj --docnum=1 -D BITS=32 -D ENCODE=LSB %s -o %t.le32                      
# RUN: llvm-readobj --cg-profile --sections --section-data %t.le32 | FileCheck %s --check-prefixes=BASIC,BASIC-LE
# RUN: yaml2obj --docnum=1 -D BITS=32 -D ENCODE=MSB %s -o %t.be32                      
# RUN: llvm-readobj --cg-profile --sections --section-data %t.be32 | FileCheck %s --check-prefixes=BASIC,BASIC-BE

# BASIC:        Name: .llvm.call-graph-profile
# BASIC-NEXT:   Type: SHT_LLVM_CALL_GRAPH_PROFILE
# BASIC-NEXT:   Flags [
# BASIC-NEXT:   ]
# BASIC-NEXT:   Address: 0x0
# BASIC-NEXT:   Offset:
# BASIC-NEXT:   Size: 32
## Check that we link SHT_LLVM_CALL_GRAPH_PROFILE section with .symtab by default.
# BASIC-NEXT:   Link: [[SYMTABNDX:.*]]
# BASIC-NEXT:   Info: 0
# BASIC-NEXT:   AddressAlignment: 0
## Check that the entry size is set to 16 by default.
# BASIC-NEXT:   EntrySize: 16
# BASIC-NEXT:   SectionData (
# BASIC-LE-NEXT:  0000: 01000000 02000000 59000000 00000000
# BASIC-LE-NEXT:  0010: 02000000 01000000 62000000 00000000
# BASIC-BE-NEXT:  0000: 00000001 00000002 00000000 00000059
# BASIC-BE-NEXT:  0010: 00000002 00000001 00000000 00000062
# BASIC-NEXT:   )
# BASIC-NEXT: }
# BASIC-NEXT: Section {
# BASIC-NEXT:   Index: [[SYMTABNDX]]
# BASIC-NEXT:   Name: .symtab

# BASIC:      CGProfile [
# BASIC-NEXT:   CGProfileEntry {
# BASIC-NEXT:     From: foo (1)
# BASIC-NEXT:     To: bar (2)
# BASIC-NEXT:     Weight: 89
# BASIC-NEXT:   }
# BASIC-NEXT:   CGProfileEntry {
# BASIC-NEXT:     From: bar (2)
# BASIC-NEXT:     To: foo (1)
# BASIC-NEXT:     Weight: 98
# BASIC-NEXT:   }
# BASIC-NEXT: ]

--- !ELF
FileHeader:
  Class: ELFCLASS[[BITS]]
  Data:  ELFDATA2[[ENCODE]]
  Type:  ET_DYN
Sections:
  - Name: .llvm.call-graph-profile
    Type: SHT_LLVM_CALL_GRAPH_PROFILE
    Entries:
      - From:   1
        To:     2
        Weight: 89
      - From:   2
        To:     1
        Weight: 98
Symbols:
  - Name: foo
  - Name: bar

## Check we can set arbitrary sh_link and sh_entsize values.
## Check we can specify neither "Content" nor "Entries" tags.
# RUN: yaml2obj --docnum=2 %s -o %t.link
# RUN: llvm-readelf --sections %t.link | FileCheck %s --check-prefix=LINK

# LINK: [Nr] Name      Type                    Address          Off    Size   ES Flg Lk
# LINK: [ 1] .llvm.foo LLVM_CALL_GRAPH_PROFILE 0000000000000000 000040 000000 00     0
# LINK: [ 2] .llvm.bar LLVM_CALL_GRAPH_PROFILE 0000000000000000 000040 000000 ff     255

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_DYN
Sections:
  - Name:    .llvm.foo
    Type:    SHT_LLVM_CALL_GRAPH_PROFILE
    Link:    0x0
    EntSize: 0
  - Name:    .llvm.bar
    Type:    SHT_LLVM_CALL_GRAPH_PROFILE
    Link:    0xFF
    EntSize: 0xFF

## Check we can't specify both "Content" and "Entries" tags.
# RUN: not yaml2obj --docnum=3 %s 2>&1 | FileCheck %s --check-prefix=BOTH
# BOTH: error: "Entries" and "Content" can't be used together

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_DYN
Sections:
  - Name:    .llvm.foo
    Type:    SHT_LLVM_CALL_GRAPH_PROFILE
    Content: ""
    Entries: []

## Check we can refer to symbols by name.
# RUN: yaml2obj --docnum=4 %s -o %t.sym
# RUN: llvm-readobj --cg-profile %t.sym | FileCheck %s --check-prefix=SYMBOL-NAMES

# SYMBOL-NAMES:      CGProfile [
# SYMBOL-NAMES-NEXT:   CGProfileEntry {
# SYMBOL-NAMES-NEXT:     From: foo (1)
# SYMBOL-NAMES-NEXT:     To: bar (2)
# SYMBOL-NAMES-NEXT:     Weight: 10
# SYMBOL-NAMES-NEXT:   }
# SYMBOL-NAMES-NEXT:   CGProfileEntry {
# SYMBOL-NAMES-NEXT:     From: foo (1)
# SYMBOL-NAMES-NEXT:     To: foo (3)
# SYMBOL-NAMES-NEXT:     Weight: 30
# SYMBOL-NAMES-NEXT:   }
# SYMBOL-NAMES-NEXT: ]

--- !ELF
FileHeader:
  Class:  ELFCLASS64
  Data:   ELFDATA2LSB
  Type:   ET_DYN
Sections:
  - Name: .llvm.call-graph-profile
    Type: SHT_LLVM_CALL_GRAPH_PROFILE
    Entries:
## Case 1: Test we can use symbol names to describe an entry.
      - From:   foo
        To:     bar
        Weight: 10
## Case 2: Test we can refer to symbols with suffixes.
      - From:   foo
        To:     'foo (1)'
        Weight: 30
Symbols:
  - Name: foo
  - Name: bar
  - Name: 'foo (1)'

## Check we can describe SHT_LLVM_CALL_GRAPH_PROFILE sections using the "Content" tag.
# RUN: yaml2obj --docnum=5 %s -o %t.content
# RUN: llvm-readobj --sections --section-data %t.content | FileCheck %s --check-prefix=CONTENT

# CONTENT:      Name: .llvm.call-graph-profile
# CONTENT:      SectionData (
# CONTENT-NEXT:   0000: 11223344 |
# CONTENT-NEXT: )

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_DYN
Sections:
  - Name:    .llvm.call-graph-profile
    Type:    SHT_LLVM_CALL_GRAPH_PROFILE
    Content: "11223344"

## Check we can't reference unknown symbols by name.
# RUN: not yaml2obj --docnum=6 %s 2>&1 | FileCheck %s --check-prefix=UNKNOWN-NAME
# RUN: not yaml2obj --docnum=7 %s 2>&1 | FileCheck %s --check-prefix=UNKNOWN-NAME
# UNKNOWN-NAME: error: unknown symbol referenced: 'bar' by YAML section '.llvm.call-graph-profile'

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_DYN
Sections:
  - Name: .llvm.call-graph-profile
    Type: SHT_LLVM_CALL_GRAPH_PROFILE
## The first symbol is valid, but the second is unknown.
    Entries:
      - From:   foo
        To:     bar
        Weight: 10
Symbols:
  - Name: foo

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_DYN
Sections:
  - Name: .llvm.call-graph-profile
    Type: SHT_LLVM_CALL_GRAPH_PROFILE
## The first symbol is unknown, but the second is valid.
    Entries:
      - From:   bar
        To:     foo
        Weight: 10
Symbols:
  - Name: foo

## Check we can specify arbitrary symbol indexes for an SHT_LLVM_CALL_GRAPH_PROFILE section entry.
# RUN: yaml2obj --docnum=8 %s -o %t.unk
# RUN: llvm-readobj --sections --section-data %t.unk | FileCheck %s --check-prefix=UNKNOWN-INDEX

# UNKNOWN-INDEX:      Name: .llvm.call-graph-profile
# UNKNOWN-INDEX:      SectionData (
# UNKNOWN-INDEX-NEXT:   0000: 01000000 02000000 03000000 00000000 |
# UNKNOWN-INDEX-NEXT: )

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_DYN
Sections:
  - Name: .llvm.call-graph-profile
    Type: SHT_LLVM_CALL_GRAPH_PROFILE
    Entries:
      - From:   1
        To:     2
        Weight: 3