[llvm-readobj] - Implement LLVM-style dumping for .stack_sizes sections.

[grimar]

Summary

D65313 implemented GNU-style dumping (llvm-readelf).
This one implements LLVM-style dumping (llvm-readobj).

test/tools/llvm-readobj/all.test

 RUN: llvm-readobj -a %p/Inputs/trivial.obj.elf-i386 \
 RUN:   | FileCheck %s -check-prefix ALL
 RUN: llvm-readobj --all %p/Inputs/trivial.obj.elf-i386 \
 RUN:   | FileCheck %s -check-prefix ALL
 
 ALL: Format: ELF32-i386
 ALL: Arch: i386
 ALL: AddressSize: 32bit
 ALL: LoadName:
 ALL: ElfHeader {
 ALL: Sections [
 ALL: Relocations [
 ALL: Symbols [
 ALL: ProgramHeaders [
 ALL: Notes [
+ALL: StackSizes [

test/tools/llvm-readobj/stack-sizes.test

 ## Check that we correctly display the contents of the .stack_sizes section
 ## in a relocatable object file.
 
 # RUN: yaml2obj --docnum=1 %s > %t01
 # RUN: llvm-readelf --stack-sizes %t01 \
-# RUN:   | FileCheck %s --check-prefix=RELOC --strict-whitespace --match-full-lines
+# RUN:   | FileCheck %s --check-prefix=RELOC-GNU --strict-whitespace --match-full-lines
+# RUN: llvm-readobj --stack-sizes %t01 | FileCheck %s --check-prefix=RELOC-LLVM
 
-#      RELOC:         Size     Function
-# RELOC-NEXT:           16     referenced_by_symbol_foo
-# RELOC-NEXT:           32     referenced_via_section_bar
-# RELOC-NEXT:            8     separate_text_section_baz
-#  RELOC-NOT:{{.}}
+#      RELOC-GNU:         Size     Function
+# RELOC-GNU-NEXT:           16     referenced_by_symbol_foo
+# RELOC-GNU-NEXT:           32     referenced_via_section_bar
+# RELOC-GNU-NEXT:            8     separate_text_section_baz
+#  RELOC-GNU-NOT:{{.}}
+
+# RELOC-LLVM:      StackSizes [
+# RELOC-LLVM-NEXT:   Entry {
+# RELOC-LLVM-NEXT:     Function: referenced_by_symbol_foo
+# RELOC-LLVM-NEXT:     Size: 0x10
+# RELOC-LLVM-NEXT:   }
+# RELOC-LLVM-NEXT:   Entry {
+# RELOC-LLVM-NEXT:     Function: referenced_via_section_bar
+# RELOC-LLVM-NEXT:     Size: 0x20
+# RELOC-LLVM-NEXT:   }
+# RELOC-LLVM-NEXT:   Entry {
+# RELOC-LLVM-NEXT:     Function: separate_text_section_baz
+# RELOC-LLVM-NEXT:     Size: 0x8
+# RELOC-LLVM-NEXT:   }
+# RELOC-LLVM-NEXT: ]
 
 --- !ELF
 FileHeader:
   Class:   ELFCLASS64
   Data:    ELFDATA2LSB
   Type:    ET_REL
   Machine: EM_X86_64
 Sections:
- Name:    referenced_via_section_bar
     Type:    STT_FUNC
     Binding: STB_GLOBAL
 
 ## Check that we correctly report the stack sizes in an executable (non-relocatable)
 ## object file.
 
 # RUN: yaml2obj --docnum=2 %s > %t02
 # RUN: llvm-readelf --stack-sizes %t02 \
-# RUN:   | FileCheck %s --check-prefix=EXEC --strict-whitespace --match-full-lines
+# RUN:   | FileCheck %s --check-prefix=EXEC-GNU --strict-whitespace --match-full-lines
+# RUN: llvm-readobj --stack-sizes %t02 | FileCheck %s --check-prefix=EXEC-LLVM
 
-#      EXEC:         Size     Function
-# EXEC-NEXT:           16     foo
-# EXEC-NEXT:           32     bar
-#  EXEC-NOT:{{.}}
+#      EXEC-GNU:         Size     Function
+# EXEC-GNU-NEXT:           16     foo
+# EXEC-GNU-NEXT:           32     bar
+#  EXEC-GNU-NOT:{{.}}
+
+# EXEC-LLVM:      StackSizes [
+# EXEC-LLVM-NEXT:   Entry {
+# EXEC-LLVM-NEXT:     Function: foo
+# EXEC-LLVM-NEXT:     Size: 0x10
+# EXEC-LLVM-NEXT:   }
+# EXEC-LLVM-NEXT:   Entry {
+# EXEC-LLVM-NEXT:     Function: bar
+# EXEC-LLVM-NEXT:     Size: 0x20
+# EXEC-LLVM-NEXT:   }
+# EXEC-LLVM-NEXT: ]
 
 --- !ELF
 FileHeader:
   Class:   ELFCLASS64
   Data:    ELFDATA2LSB
   Type:    ET_EXEC
   Machine: EM_X86_64
 Sections:
- Name:    bar
     Type:    STT_FUNC
     Binding: STB_GLOBAL
 
 ## Check that we report an error when we find relocations whose offsets point outside
 ## of the .stack_sizes section.
 
 # RUN: yaml2obj --docnum=3 %s > %t03
 # RUN: not llvm-readelf --stack-sizes %t03 2>&1 | FileCheck %s --check-prefix=SHORT -DFILE=%t03
+# RUN: not llvm-readobj --stack-sizes %t03 2>&1 | FileCheck %s --check-prefix=SHORT -DFILE=%t03
 
 # SHORT: error: '[[FILE]]': found invalid relocation offset into section .stack_sizes while trying to extract a stack size entry
 
 --- !ELF
 FileHeader:
   Class:   ELFCLASS64
   Data:    ELFDATA2LSB
   Type:    ET_REL
- Name:    foo
     Section: .text
     Type:    STT_FUNC
     Binding: STB_GLOBAL
 
 ## Check that we warn about a function symbol that is not in the section
 ## that is referenced by the stack sizes section's sh_link.
 
 # RUN: yaml2obj --docnum=4 %s > %t04
-# RUN: llvm-readelf --stack-sizes %t04 2> %t04.err | FileCheck %s --check-prefix=WRONGSECTION
-# RUN: FileCheck %s < %t04.err --check-prefix=WRONGSECTION-ERR -DFILE=%t04
+# RUN: llvm-readelf --stack-sizes %t04 2> %t04-gnu.err | FileCheck %s --check-prefix=WRONGSECTION-GNU
+# RUN: FileCheck %s < %t04-gnu.err --check-prefix=WRONGSECTION-ERR -DFILE=%t04
+# RUN: llvm-readobj --stack-sizes %t04 2> %t04-llvm.err | FileCheck %s --check-prefix=WRONGSECTION-LLVM
+# RUN: FileCheck %s < %t04-llvm.err --check-prefix=WRONGSECTION-ERR -DFILE=%t04
+
+# WRONGSECTION-GNU:      Size Function
+# WRONGSECTION-GNU-NEXT: 8 foo
+
+# WRONGSECTION-LLVM:      StackSizes [
+# WRONGSECTION-LLVM-NEXT:   Entry {
+# WRONGSECTION-LLVM-NEXT:     Function: foo
+# WRONGSECTION-LLVM-NEXT:     Size: 0x8
+# WRONGSECTION-LLVM-NEXT:   }
+# WRONGSECTION-LLVM-NEXT: ]
 
-# WRONGSECTION:      Size Function
-# WRONGSECTION-NEXT: 8 foo
 # WRONGSECTION-ERR:  warning: '[[FILE]]': relocation symbol foo is not in the expected section
 
 --- !ELF
 FileHeader:
   Class:   ELFCLASS64
   Data:    ELFDATA2LSB
   Type:    ET_REL
   Machine: EM_X86_64
Symbols:
   - Name:    foo
     Section: .text
     Type:    STT_FUNC
     Binding: STB_GLOBAL
 
 ## Check that we report an error when a stack sizes section ends with an incomplete stack size entry.
 
 # RUN: yaml2obj --docnum=5 %s > %t05
-# RUN: not llvm-readelf --stack-sizes %t05 2>&1 %t05.err | \
+# RUN: not llvm-readelf --stack-sizes %t05 2>&1 | \
+# RUN:    FileCheck %s --check-prefix=SUDDENEND -DFILE=%t05
+# RUN: not llvm-readobj --stack-sizes %t05 2>&1 | \
 # RUN:    FileCheck %s --check-prefix=SUDDENEND -DFILE=%t05
 
 # SUDDENEND: error: '[[FILE]]': section .stack_sizes ended while trying to extract a stack size entry
 
 --- !ELF
 FileHeader:
   Class:   ELFCLASS64
   Data:    ELFDATA2LSB
- Name:    foo
     Type:    STT_FUNC
     Binding: STB_GLOBAL
 
 ## Check that we report an invalid stack size, which is represented by a ULEB that
 ## ends in a byte with the high bit set.
 
 # RUN: yaml2obj --docnum=6 %s > %t06
 # RUN: not llvm-readelf --stack-sizes %t06 2>&1 | FileCheck %s --check-prefix=BADSIZE -DFILE=%t06
+# RUN: not llvm-readobj --stack-sizes %t06 2>&1 | FileCheck %s --check-prefix=BADSIZE -DFILE=%t06
 
 # BADSIZE: error: '[[FILE]]': could not extract a valid stack size in section .stack_sizes
 
 --- !ELF
 FileHeader:
   Class:   ELFCLASS64
   Data:    ELFDATA2LSB
   Type:    ET_EXEC
- Name:    foo
     Type:    STT_FUNC
     Binding: STB_GLOBAL
 
 ## Check that we report a warning when a relocation symbol does not belong to a
 ## valid section. We expect a stack size entry with an unknown symbol in the 
 ## output.
 
 # RUN: yaml2obj --docnum=7 %s > %t07
-# RUN: llvm-readelf --stack-sizes %t07 2> %t07.err | FileCheck %s --check-prefix=BADSECTION-OUT
-# RUN: FileCheck %s < %t07.err --check-prefix=BADSECTION-ERR -DFILE=%t07
+# RUN: llvm-readelf --stack-sizes %t07 2> %t07-gnu.err | FileCheck %s --check-prefix=BADSECTION-OUT-GNU
+# RUN: FileCheck %s < %t07-gnu.err --check-prefix=BADSECTION-ERR -DFILE=%t07
+# RUN: llvm-readobj --stack-sizes %t07 2> %t07-llvm.err | FileCheck %s --check-prefix=BADSECTION-OUT-LLVM
+# RUN: FileCheck %s < %t07-llvm.err --check-prefix=BADSECTION-ERR -DFILE=%t07
+
+# BADSECTION-OUT-GNU: Size Function
+# BADSECTION-OUT-GNU:    8 ?
+
+# BADSECTION-OUT-LLVM:      StackSizes [
+# BADSECTION-OUT-LLVM-NEXT:   Entry {
+# BADSECTION-OUT-LLVM-NEXT:     Function: ?
+# BADSECTION-OUT-LLVM-NEXT:     Size: 0x8
+# BADSECTION-OUT-LLVM-NEXT:   }
+# BADSECTION-OUT-LLVM-NEXT: ]
 
-# BADSECTION-OUT: Size Function
-# BADSECTION-OUT:    8 ?
 # BADSECTION-ERR: warning: '[[FILE]]': cannot identify the section for relocation symbol foo
 
 --- !ELF
 FileHeader:
   Class:   ELFCLASS64
   Data:    ELFDATA2LSB
   Type:    ET_REL
   Machine: EM_X86_64
## An invalid section index.
     Index:   10
     Type:    STT_FUNC
     Binding: STB_GLOBAL
 
 ## Check that we report a warning when a stack sizes section does not come with
 ## a corresponding relocation section.
 
 # RUN: yaml2obj --docnum=8 %s > %t08
-# RUN: llvm-readelf --stack-sizes %t08 2> %t08.err | FileCheck %s --check-prefix=NORELOCSECTION-OUT
-# RUN: FileCheck %s < %t08.err --check-prefix=NORELOCSECTION-ERR -DFILE=%t08
+# RUN: llvm-readelf --stack-sizes %t08 2> %t08-gnu.err | FileCheck %s --check-prefix=NORELOCSECTION-OUT-GNU
+# RUN: FileCheck %s < %t08-gnu.err --check-prefix=NORELOCSECTION-ERR -DFILE=%t08
+# RUN: llvm-readobj --stack-sizes %t08 2> %t08-llvm.err | FileCheck %s --check-prefix=NORELOCSECTION-OUT-LLVM
+# RUN: FileCheck %s < %t08-llvm.err --check-prefix=NORELOCSECTION-ERR -DFILE=%t08
+
+# NORELOCSECTION-OUT-GNU:     Size Function
+# NORELOCSECTION-OUT-GNU-NOT: {{.}}
+
+# NORELOCSECTION-OUT-LLVM:      StackSizes [
+# NORELOCSECTION-OUT-LLVM-NEXT: ]
 
-# NORELOCSECTION-OUT:     Size Function
-# NORELOCSECTION-OUT-NOT: {{.}}
-# NORELOCSECTION-ERR:     warning: '[[FILE]]': section .stack_sizes does not have a corresponding relocation section
+# NORELOCSECTION-ERR: warning: '[[FILE]]': section .stack_sizes does not have a corresponding relocation section
 
 --- !ELF
 FileHeader:
   Class:   ELFCLASS64
   Data:    ELFDATA2LSB
   Type:    ET_REL
   Machine: EM_X86_64
 Sections:
   - Name:    .text
     Type:    SHT_PROGBITS
     Size:    8
   - Name:    .stack_sizes
     Type:    SHT_PROGBITS
     Link:    .text
     Content: "000000000000000008"
 
 ## Check that we handle multiple object files, separately and when they
 ## are in an archive. This also checks whether we have blank lines between the
 ## tables.
 
 # RUN: llvm-ar rc %t1.a %t01 %t02
 # RUN: llvm-readelf --stack-sizes %t01 %t02 \
-# RUN:   | FileCheck %s --check-prefixes=MULTIPLE,OBJECT -DFILE1=%t01 -DFILE2=%t02
+# RUN:   | FileCheck %s --check-prefixes=MULTIPLE-GNU,OBJECT -DFILE1=%t01 -DFILE2=%t02
 # RUN: llvm-readelf --stack-sizes %t1.a \
-# RUN:   | FileCheck %s --check-prefixes=MULTIPLE,ARCHIVE --strict-whitespace\
+# RUN:   | FileCheck %s --check-prefixes=MULTIPLE-GNU,ARCHIVE --strict-whitespace\
 # RUN:   --match-full-lines -DFILE=%t1.a
+# RUN: llvm-readobj --stack-sizes %t01 %t02 \
+# RUN:   | FileCheck %s --check-prefixes=MULTIPLE-LLVM,OBJECT -DFILE1=%t01 -DFILE2=%t02
+# RUN: llvm-readobj --stack-sizes %t1.a \
+# RUN:   | FileCheck %s --check-prefixes=MULTIPLE-LLVM,ARCHIVE -DFILE=%t1.a
 
 #        OBJECT:File: [[FILE1]]
 #       ARCHIVE:File: [[FILE]]({{.*01}})
-#      MULTIPLE:Stack Sizes:
-# MULTIPLE-NEXT:         Size     Function
-# MULTIPLE-NEXT:           16     referenced_by_symbol_foo
-# MULTIPLE-NEXT:           32     referenced_via_section_bar
-# MULTIPLE-NEXT:            8     separate_text_section_baz
-# MULTIPLE-EMPTY:
+
+#      MULTIPLE-GNU:Stack Sizes:
+# MULTIPLE-GNU-NEXT:         Size     Function
+# MULTIPLE-GNU-NEXT:           16     referenced_by_symbol_foo
+# MULTIPLE-GNU-NEXT:           32     referenced_via_section_bar
+# MULTIPLE-GNU-NEXT:            8     separate_text_section_baz
+# MULTIPLE-GNU-EMPTY:
+
+# MULTIPLE-LLVM:      StackSizes [
+# MULTIPLE-LLVM-NEXT:   Entry {
+# MULTIPLE-LLVM-NEXT:     Function: referenced_by_symbol_foo
+# MULTIPLE-LLVM-NEXT:     Size: 0x10
+# MULTIPLE-LLVM-NEXT:   }
+# MULTIPLE-LLVM-NEXT:   Entry {
+# MULTIPLE-LLVM-NEXT:     Function: referenced_via_section_bar
+# MULTIPLE-LLVM-NEXT:     Size: 0x20
+# MULTIPLE-LLVM-NEXT:   }
+# MULTIPLE-LLVM-NEXT:   Entry {
+# MULTIPLE-LLVM-NEXT:     Function: separate_text_section_baz
+# MULTIPLE-LLVM-NEXT:     Size: 0x8
+# MULTIPLE-LLVM-NEXT:   }
+# MULTIPLE-LLVM-NEXT: ]
+
 #        OBJECT:File: [[FILE2]]
 #       ARCHIVE:File: [[FILE]]({{.*02}})
-# MULTIPLE-EMPTY:
-# MULTIPLE-NEXT:Stack Sizes:
-# MULTIPLE-NEXT:         Size     Function
-# MULTIPLE-NEXT:           16     foo
-# MULTIPLE-NEXT:           32     bar
+
+# MULTIPLE-GNU-EMPTY:
+# MULTIPLE-GNU-NEXT:Stack Sizes:
+# MULTIPLE-GNU-NEXT:         Size     Function
+# MULTIPLE-GNU-NEXT:           16     foo
+# MULTIPLE-GNU-NEXT:           32     bar
+
+# MULTIPLE-LLVM:      StackSizes [
+# MULTIPLE-LLVM-NEXT:   Entry {
+# MULTIPLE-LLVM-NEXT:     Function: foo
+# MULTIPLE-LLVM-NEXT:     Size: 0x10
+# MULTIPLE-LLVM-NEXT:   }
+# MULTIPLE-LLVM-NEXT:   Entry {
+# MULTIPLE-LLVM-NEXT:     Function: bar
+# MULTIPLE-LLVM-NEXT:     Size: 0x20
+# MULTIPLE-LLVM-NEXT:   }
+# MULTIPLE-LLVM-NEXT: ]
 
 ## Check that we do not consider symbols that are not function symbols, even though
 ## a relocation references them. 
 
 # RUN: yaml2obj --docnum=9 %s > %t14
-# RUN: llvm-readelf --stack-sizes %t14 2> %t14.err | FileCheck %s --check-prefix=NONFUNCTIONSYM
-# RUN: FileCheck %s < %t14.err --check-prefix=NONFUNCTIONSYM-ERR -DFILE=%t14
+# RUN: llvm-readelf --stack-sizes %t14 2> %t14-gnu.err | FileCheck %s --check-prefix=NONFUNCTIONSYM-GNU
+# RUN: FileCheck %s < %t14-gnu.err --check-prefix=NONFUNCTIONSYM-ERR -DFILE=%t14
+# RUN: llvm-readobj --stack-sizes %t14 2> %t14-llvm.err | FileCheck %s --check-prefix=NONFUNCTIONSYM-LLVM
+# RUN: FileCheck %s < %t14-llvm.err --check-prefix=NONFUNCTIONSYM-ERR -DFILE=%t14
+
+# NONFUNCTIONSYM-GNU:     Stack Sizes:
+# NONFUNCTIONSYM-GNU:     0 ?
+
+# NONFUNCTIONSYM-LLVM:      StackSizes [
+# NONFUNCTIONSYM-LLVM-NEXT:   Entry {
+# NONFUNCTIONSYM-LLVM-NEXT:     Function: ?
+# NONFUNCTIONSYM-LLVM-NEXT:     Size: 0x0
+# NONFUNCTIONSYM-LLVM-NEXT:   }
+# NONFUNCTIONSYM-LLVM-NEXT: ]
 
-# NONFUNCTIONSYM:     Stack Sizes:
-# NONFUNCTIONSYM:     0 ?
 # NONFUNCTIONSYM-ERR: warning: '[[FILE]]': could not identify function symbol for stack size entry
 
 --- !ELF
 FileHeader:
   Class:   ELFCLASS64
   Data:    ELFDATA2LSB
   Type:    ET_REL
   Machine: EM_X86_64
- Name:    foo
     Type:    STT_OBJECT
     Binding: STB_GLOBAL
 
 ## Check that we report an error when we find an unsupported relocation
 ## in the section that contains the stack size entries' relocations.
 
 # RUN: yaml2obj --docnum=10 %s > %t15
 # RUN: not llvm-readelf --stack-sizes %t15 2>&1 | FileCheck %s --check-prefix=UNSUPPRELOC -DFILE=%t15
+# RUN: not llvm-readobj --stack-sizes %t15 2>&1 | FileCheck %s --check-prefix=UNSUPPRELOC -DFILE=%t15
 
 # UNSUPPRELOC: error: '[[FILE]]': unsupported relocation type in section .rela.stack_sizes: R_X86_64_RELATIVE
 
 --- !ELF
 FileHeader:
   Class:   ELFCLASS64
   Data:    ELFDATA2LSB
   Type:    ET_REL
- Name:    foo
     Type:    STT_FUNC
     Binding: STB_GLOBAL
 
 ## Check that warning messages in archives do not impact other members. In the following
 ## test, the first archive member generates a warning and we make sure all the information
 ## is still dumped.
 
 # RUN: llvm-ar rc %t2.a %t04 %t01
-# RUN: llvm-readelf --stack-sizes %t2.a 2>&1 | FileCheck %s --check-prefix=ARCHIVEWARN \
+# RUN: llvm-readelf --stack-sizes %t2.a 2>&1 | FileCheck %s --check-prefix=ARCHIVEWARN-GNU \
 # RUN:   -DFILE=%t2.a --strict-whitespace --match-full-lines
+# RUN: llvm-readobj --stack-sizes %t2.a 2>&1 | FileCheck %s --check-prefix=ARCHIVEWARN-LLVM -DFILE=%t2.a
 
-#      ARCHIVEWARN:File: [[FILE]]({{.*04}})
-#      ARCHIVEWARN:Stack Sizes:
-# ARCHIVEWARN-NEXT:         Size     Function
-#      ARCHIVEWARN:            8     foo
-#      ARCHIVEWARN:File: [[FILE]]({{.*01}})
-#      ARCHIVEWARN:Stack Sizes:
-# ARCHIVEWARN-NEXT:         Size     Function
-# ARCHIVEWARN-NEXT:           16     referenced_by_symbol_foo
-# ARCHIVEWARN-NEXT:           32     referenced_via_section_bar
-# ARCHIVEWARN-NEXT:            8     separate_text_section_baz
-#  ARCHIVEWARN-NOT:{{.}}
-#  ARCHIVEWARN-ERR:warning: '[[FILE]]': relocation symbol foo is not in the expected section
+#      ARCHIVEWARN-GNU:File: [[FILE]]({{.*04}})
+#      ARCHIVEWARN-GNU:Stack Sizes:
+# ARCHIVEWARN-GNU-NEXT:         Size     Function
+#      ARCHIVEWARN-GNU:{{.*}}: warning: '{{.*04}}': relocation symbol foo is not in the expected section
+#      ARCHIVEWARN-GNU:            8     foo
+#      ARCHIVEWARN-GNU:File: [[FILE]]({{.*01}})
+#      ARCHIVEWARN-GNU:Stack Sizes:
+# ARCHIVEWARN-GNU-NEXT:         Size     Function
+# ARCHIVEWARN-GNU-NEXT:           16     referenced_by_symbol_foo
+# ARCHIVEWARN-GNU-NEXT:           32     referenced_via_section_bar
+# ARCHIVEWARN-GNU-NEXT:            8     separate_text_section_baz
+#  ARCHIVEWARN-GNU-NOT:{{.}}
+
+
+# ARCHIVEWARN-LLVM:      File: [[FILE]]({{.*04}})
+# ARCHIVEWARN-LLVM:      StackSizes [
+# ARCHIVEWARN-LLVM:      warning: '{{.*04}}': relocation symbol foo is not in the expected section
+# ARCHIVEWARN-LLVM-NEXT:   Entry {
+# ARCHIVEWARN-LLVM-NEXT:     Function: foo
+# ARCHIVEWARN-LLVM-NEXT:     Size: 0x8
+# ARCHIVEWARN-LLVM-NEXT:   }
+# ARCHIVEWARN-LLVM-NEXT: ]
+# ARCHIVEWARN-LLVM:      File: [[FILE]]({{.*01}})
+# ARCHIVEWARN-LLVM:      StackSizes [
+# ARCHIVEWARN-LLVM-NEXT:   Entry {
+# ARCHIVEWARN-LLVM-NEXT:     Function: referenced_by_symbol_foo
+# ARCHIVEWARN-LLVM-NEXT:     Size: 0x10
+# ARCHIVEWARN-LLVM-NEXT:   }
+# ARCHIVEWARN-LLVM-NEXT:   Entry {
+# ARCHIVEWARN-LLVM-NEXT:     Function: referenced_via_section_bar
+# ARCHIVEWARN-LLVM-NEXT:     Size: 0x20
+# ARCHIVEWARN-LLVM-NEXT:   }
+# ARCHIVEWARN-LLVM-NEXT:   Entry {
+# ARCHIVEWARN-LLVM-NEXT:     Function: separate_text_section_baz
+# ARCHIVEWARN-LLVM-NEXT:     Size: 0x8
+# ARCHIVEWARN-LLVM-NEXT:   }
+# ARCHIVEWARN-LLVM-NEXT: ]
 
 ## Check that we demangle function names when requested.
 
 # RUN: yaml2obj --docnum=11 %s > %t16
-# RUN: llvm-readelf --stack-sizes --demangle %t16 | FileCheck %s --check-prefix=DEMANGLE
+# RUN: llvm-readelf --stack-sizes --demangle %t16 | FileCheck %s --check-prefix=DEMANGLE-GNU
+# RUN: llvm-readobj --stack-sizes --demangle %t16 | FileCheck %s --check-prefix=DEMANGLE-LLVM
 
-# DEMANGLE: 16 foo(float)
+# DEMANGLE-GNU:  16 foo(float)
+# DEMANGLE-LLVM: Function: foo(float)
 
 --- !ELF
 FileHeader:
   Class:   ELFCLASS64
   Data:    ELFDATA2LSB
   Type:    ET_EXEC
   Machine: EM_X86_64
 Sections:
   - Name:    .text
     Type:    SHT_PROGBITS
     Flags:   [SHF_ALLOC]
     Size:    16
   - Name:    .stack_sizes
     Type:    SHT_PROGBITS
     Content: "100000000000000010"
     Link:    .text
 Symbols:
   - Name:    _Z3foof
     Section: .text
     Value:   0x10
     Type:    STT_FUNC
     Binding: STB_GLOBAL
-
-## Check that we emit a 'not implemented' message for an attempt to dump stack-sizes
-## sections LLVM-style, i.e. when invoking llvm-readobj. 
-## FIXME: Replace this test with something functional when the feature is implemented.
-
-# RUN: llvm-readobj --stack-sizes %t01 | FileCheck %s --check-prefix=NOTIMPLEMENTED 
-
-# NOTIMPLEMENTED: Dumping of stack sizes in LLVM style is not implemented yet

tools/llvm-readobj/ELFDumper.cpp

for (const uint8_t *P = Contents.begin(), *E = Contents.end(); P < E; ) {
 
       P = P + Key.size() + Value.size() + 2;
     }
   }
 }
 
 template <class ELFT>
 void LLVMStyle<ELFT>::printStackSizes(const ELFObjectFile<ELFT> *Obj) {
-  W.printString(
-      "Dumping of stack sizes in LLVM style is not implemented yet\n");
+  ListScope L(W, "StackSizes");
+  if (Obj->isRelocatableObject())
+    this->printRelocatableStackSizes(Obj, []() {});
+  else
+    this->printNonRelocatableStackSizes(Obj, []() {});
 }
 
 template <class ELFT>
 void LLVMStyle<ELFT>::printStackSizeEntry(uint64_t Size, StringRef FuncName) {
-  // FIXME: Implement this function for LLVM-style dumping.
+  DictScope D(W, "Entry");
+  W.printString("Function", FuncName);
+  W.printHex("Size", Size);
 }
 
 template <class ELFT>
 void LLVMStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) {
   auto PrintEntry = [&](const Elf_Addr *E) {
     W.printHex("Address", Parser.getGotAddress(E));
     W.printNumber("Access", Parser.getGotOffset(E));
     W.printHex("Initial", *E);

tools/llvm-readobj/llvm-readobj.cpp

if (opts::All) {
     opts::Symbols = true;
     opts::Relocations = true;
     opts::DynamicTable = true;
     opts::Notes = true;
     opts::VersionInfo = true;
     opts::UnwindInfo = true;
     opts::SectionGroups = true;
     opts::HashHistogram = true;
-    // FIXME: As soon as we implement LLVM-style printing of the .stack_size
-    // section, we will enable it with --all (only for LLVM-style).
     if (opts::Output == opts::LLVM)
-      opts::PrintStackSizes = false;
+      opts::PrintStackSizes = true;
   }
 
   if (opts::Headers) {
     opts::FileHeaders = true;
     opts::ProgramHeaders = true;
     opts::SectionHeaders = true;
   }