[GSOC] LTO dump tool project
Hrishikesh Kulkarni
hrishikeshparag@gmail.com
Mon Jul 9 07:51:00 GMT 2018
Hi,
The command line option -gimple-stats will dump the statistics of
gimple statements.
For example:
$ ../stage1-build/gcc/lto-dump test_hello.o -gimple-stats
will dump:
GIMPLE statements
Kind Stmts Bytes
---------------------------------------
assignments 3 264
phi nodes 1 248
conditionals 1 80
everything else 12 704
---------------------------------------
Total 17 1296
---------------------------------------
I have pushed the changes to the repo. Please find the diff file
attached herewith.
Regards,
Hrishikesh
On Thu, Jul 5, 2018 at 10:41 PM, Hrishikesh Kulkarni
<hrishikeshparag@gmail.com> wrote:
> Hi,
>
> I have added new command line option:
> -objects
> which will dump size, offset and name of each section for all lto objects
>
> for example:
> $ ../stage1-build/gcc/lto-dump test_hello.o test.o -objects
>
> gives output:
> LTO object name: test_hello.o
>
> NO. OFFSET SIZE SECTION NAME
>
> 1 64 15 .gnu.lto_.profile.a7add72ac123628
> 2 79 55 .gnu.lto_.icf.a7add72ac123628
> 3 134 134 .gnu.lto_.jmpfuncs.a7add72ac123628
> 4 268 116 .gnu.lto_.inline.a7add72ac123628
> 5 384 24 .gnu.lto_.pureconst.a7add72ac123628
> 6 408 306 .gnu.lto_foo.a7add72ac123628
> 7 714 469 .gnu.lto_bar.a7add72ac123628
> 8 1183 345 .gnu.lto_main.a7add72ac123628
> 9 1528 88 .gnu.lto_.symbol_nodes.a7add72ac123628
> 10 1616 15 .gnu.lto_.refs.a7add72ac123628
> 11 1631 1205 .gnu.lto_.decls.a7add72ac123628
> 12 2836 109 .gnu.lto_.symtab.a7add72ac123628
> 13 2945 76 .gnu.lto_.opts
>
> LTO object name: test.o
>
> NO. OFFSET SIZE SECTION NAME
>
> 1 64 15 .gnu.lto_.profile.ffab9cb8eb84fc03
> 2 79 30 .gnu.lto_.icf.ffab9cb8eb84fc03
> 3 109 108 .gnu.lto_.jmpfuncs.ffab9cb8eb84fc03
> 4 217 62 .gnu.lto_.inline.ffab9cb8eb84fc03
> 5 279 21 .gnu.lto_.pureconst.ffab9cb8eb84fc03
> 6 300 194 .gnu.lto_koo.ffab9cb8eb84fc03
> 7 494 389 .gnu.lto_gain.ffab9cb8eb84fc03
> 8 883 77 .gnu.lto_.symbol_nodes.ffab9cb8eb84fc03
> 9 960 15 .gnu.lto_.refs.ffab9cb8eb84fc03
> 10 975 966 .gnu.lto_.decls.ffab9cb8eb84fc03
> 11 1941 58 .gnu.lto_.symtab.ffab9cb8eb84fc03
> 12 1999 76 .gnu.lto_.opts
>
>
> I have pushed the changes to the repo. Please find the diff file
> attached herewith.
>
> Regards,
>
> Hrishikesh
>
> On Thu, Jul 5, 2018 at 12:24 AM, Hrishikesh Kulkarni
> <hrishikeshparag@gmail.com> wrote:
>> Hi,
>>
>> I have:
>> tried to do all the formatting and style corrections according to
>> output given by check_GNU_style.py
>> removed '-fdump-lto' prefix from the command line options
>> added few necessary comments in the code
>> added command line option -type-stats from previous branch (added a
>> new percentage column to it)
>> for e.g.
>> integer_type 3 25.00%
>> pointer_type 3 25.00%
>> array_type 1 8.33%
>> function_type 5 41.67%
>> I have pushed the changes to the repo. Please find the diff file
>> attached herewith.
>>
>> Regards,
>>
>> Hrishikesh
>>
>> On Tue, Jul 3, 2018 at 6:39 PM, Hrishikesh Kulkarni
>> <hrishikeshparag@gmail.com> wrote:
>>> Hi,
>>>
>>> Thanks for suggestions. I have started incorporating them. As a first:
>>>
>>> I have added command line options:
>>> -print-size to print the size of functions and variables
>>> size of variables is in bits and size of functions is represented as
>>> number of basic blocks.
>>>
>>> -print-value to print the value of initialization of global variables.
>>>
>>> -size-sort to sort the symbol names according to the size.
>>>
>>> for example command line options:
>>>
>>> ../stage1-build/gcc/lto-dump test_hello.o -fdump-lto-list -print-size
>>> -print-value -size-sort
>>>
>>> the dump is:
>>>
>>> Symbol Table
>>> Name Type Visibility Size Value
>>>
>>> printf function default 0
>>> main function default 3
>>> foo function default 3
>>> bar function default 6
>>>
>>> z variable default 8 97
>>> k variable default 32 5
>>> p variable default 32
>>> 4.400000095367431640625e+0
>>>
>>> I have also tried to make memory allocation dynamic to the best of my knowledge.
>>> I have pushed the changes to the repo. Please find the diff file
>>> attached herewith.
>>>
>>> Regards,
>>>
>>> Hrishikesh
>>>
>>>
>>> On Fri, Jun 29, 2018 at 12:55 PM, Martin Liška <mliska@suse.cz> wrote:
>>>> On 06/27/2018 10:06 PM, Hrishikesh Kulkarni wrote:
>>>>> Hi,
>>>>>
>>>>> I have added new command line options:
>>>>> -no-demangle -> for the default non demangled output
>>>>> -no-sort -> for the list of symbols in order of their occurrence
>>>>> -alpha-sort -> for the list of symbols in their alphabetical order
>>>>> -reverse-sort -> for the list of symbols in reversed order
>>>>> -defined-only -> for only the defined symbols
>>>>
>>>> Hi.
>>>>
>>>> Good progress.
>>>>
>>>>>
>>>>> for example:
>>>>>
>>>>> ../stage1-build/gcc/lto-dump test_hello.o -fdump-lto-list -alpha-sort
>>>>> -demangle -defined-only -reverse-sort
>>>>
>>>> Now as you have a separate tool (lto-dump), you can strip 'fdump-lto' prefix
>>>> from the older options.
>>>>
>>>>>
>>>>> will dump
>>>>>
>>>>> Symbol Table
>>>>> Name Type Visibility Size
>>>>> main function default
>>>>> k variable default
>>>>> foo function default
>>>>> bar function default
>>>>>
>>>>> It is a reversed alphabetical order of demangled symbol names which
>>>>> have been defined(hence printf excluded).
>>>>> Along with this I have also added all previous progress with reference
>>>>> to symbol table to the new branch.
>>>>>
>>>>> For further options to add like -size-sort and -print-size I tried to
>>>>> access size of the symbol with symtab node using
>>>>> TREE_INT_CST_LOW(DECL_SIZE(node->decl));
>>>>> but I am unable to do so.
>>>>> So how should I proceed with it?
>>>>
>>>> Sent advises via instant messaging.
>>>>
>>>> Martin
>>>>
>>>>>
>>>>> Please find the diff file attached herewith. I have also pushed the
>>>>> changes to the new branch.
>>>>>
>>>>> Please advise,
>>>>>
>>>>> Hrishikesh>
>>>>> On Wed, Jun 27, 2018 at 1:15 AM, Hrishikesh Kulkarni
>>>>> <hrishikeshparag@gmail.com> wrote:
>>>>>> Hi,
>>>>>>
>>>>>> I have created another branch lto-dump-tool-improved as suggested.
>>>>>> I have applied the patch for separation to lto-dump binary, made a few
>>>>>> necessary changes in other files and it is running successfully.
>>>>>> I will keep on adding previous work to this branch incrementally.
>>>>>>
>>>>>> Please find the diff file attached for dumping of TREE statistics and
>>>>>> GIMPLE statistics.
>>>>>>
>>>>>> for example:
>>>>>> (after configuring with --enable-gather-detailed-mem-stats)
>>>>>> -fdump-lto-gimple-stats will dump
>>>>>> GIMPLE statements
>>>>>> Kind Stmts Bytes
>>>>>> ---------------------------------------
>>>>>> assignments 0 0
>>>>>> phi nodes 0 0
>>>>>> conditionals 0 0
>>>>>> everything else 0 0
>>>>>> ---------------------------------------
>>>>>> Total 0 0
>>>>>> ---------------------------------------
>>>>>>
>>>>>> -fdump-lto-tree-stats will dump
>>>>>>
>>>>>> Tree Statistics
>>>>>>
>>>>>> Kind Nodes Bytes
>>>>>> ----------------------------------------
>>>>>> decls 4327 932672
>>>>>> types 1531 257208
>>>>>> blocks 0 0
>>>>>> stmts 0 0
>>>>>> refs 0 0
>>>>>> exprs 4 128
>>>>>> constants 82 2060
>>>>>> identifiers 4430 177200
>>>>>> vecs 16 28544
>>>>>> binfos 0 0
>>>>>> ssa names 0 0
>>>>>> constructors 0 0
>>>>>> random kinds 7301 291952
>>>>>> lang_decl kinds 0 0
>>>>>> lang_type kinds 0 0
>>>>>> omp clauses 0 0
>>>>>> ----------------------------------------
>>>>>> Total 17691 1689764
>>>>>>
>>>>>>
>>>>>>
>>>>>> Please advise,
>>>>>>
>>>>>> Hrishikesh
>>>>>>
>>>>>> On Wed, Jun 27, 2018 at 1:00 AM, Hrishikesh Kulkarni
>>>>>> <hrishikeshparag@gmail.com> wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> I have created another branch lto-dump-tool-improved as suggested.
>>>>>>> I have applied the patch for separation to lto-dump binary, made a few
>>>>>>> necessary changes in other files and it is running successfully.
>>>>>>> I will keep on adding previous work to this branch incrementally.
>>>>>>>
>>>>>>> Please find the diff file attached for dumping of TREE statistics and GIMPLE
>>>>>>> statistics.
>>>>>>>
>>>>>>> for example:
>>>>>>> (after configuring with --enable-gather-detailed-mem-stats)
>>>>>>> -fdump-lto-gimple-stats will dump
>>>>>>> GIMPLE statements
>>>>>>> Kind Stmts Bytes
>>>>>>> ---------------------------------------
>>>>>>> assignments 0 0
>>>>>>> phi nodes 0 0
>>>>>>> conditionals 0 0
>>>>>>> everything else 0 0
>>>>>>> ---------------------------------------
>>>>>>> Total 0 0
>>>>>>> ---------------------------------------
>>>>>>>
>>>>>>> -fdump-lto-tree-stats will dump
>>>>>>>
>>>>>>> Tree Statistics
>>>>>>>
>>>>>>> Kind Nodes Bytes
>>>>>>> ----------------------------------------
>>>>>>> decls 4327 932672
>>>>>>> types 1531 257208
>>>>>>> blocks 0 0
>>>>>>> stmts 0 0
>>>>>>> refs 0 0
>>>>>>> exprs 4 128
>>>>>>> constants 82 2060
>>>>>>> identifiers 4430 177200
>>>>>>> vecs 16 28544
>>>>>>> binfos 0 0
>>>>>>> ssa names 0 0
>>>>>>> constructors 0 0
>>>>>>> random kinds 7301 291952
>>>>>>> lang_decl kinds 0 0
>>>>>>> lang_type kinds 0 0
>>>>>>> omp clauses 0 0
>>>>>>> ----------------------------------------
>>>>>>> Total 17691 1689764
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Please advise,
>>>>>>>
>>>>>>> Hrishikesh
>>>>>>>
>>>>>>>
>>>>>>> On Fri, Jun 22, 2018 at 2:29 PM, Martin Liška <mliska@suse.cz> wrote:
>>>>>>>>
>>>>>>>> On 06/18/2018 10:45 AM, Martin Jambor wrote:
>>>>>>>>> Hi,
>>>>>>>>>
>>>>>>>>> On Sun, Jun 17 2018, Hrishikesh Kulkarni wrote:
>>>>>>>>>> Hi,
>>>>>>>>>>
>>>>>>>>>> I am trying to isolate the dump tool into real lto-dump tool. I have
>>>>>>>>>> started with the copy&paste of lto.c into lto-dump.c and done the
>>>>>>>>>> changes to Make-lang.in and config-lang.in suggested by Martin (patch
>>>>>>>>>> attached). However when I try to build, I get the following error:
>>>>>>>>>>
>>>>>>>>>> In file included from ../../gcc/gcc/lto/lto-dump.c:24:0:
>>>>>>>>>>
>>>>>>>>>> ../../gcc/gcc/coretypes.h:397:24: fatal error: insn-modes.h: No such
>>>>>>>>>>
>>>>>>>>>> file or directory
>>>>>>>>>>
>>>>>>>>>> compilation terminated.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> I am unable to find the missing dependencies and would be grateful for
>>>>>>>>>> suggestions on how to resolve the issue.
>>>>>>>>>
>>>>>>>>> insn-modes.h is one of header files which are generated at build time,
>>>>>>>>> you will find it in the gcc subdirectory of your build directory (as
>>>>>>>>> opposed to the source directory).
>>>>>>>>>
>>>>>>>>> Martin
>>>>>>>>>
>>>>>>>>
>>>>>>>> Hi.
>>>>>>>>
>>>>>>>> There's patch that works for me.
>>>>>>>> Needed dependency is here:
>>>>>>>>
>>>>>>>> +lto/lto-dump.o: $(LTO_EXE)
>>>>>>>>
>>>>>>>> It's bit artificial, but for now it works. Please start working
>>>>>>>> on separation of dump infrastructure to lto-dump.c. You'll need
>>>>>>>> to factor out common code shared in between lto.c and lto-dump.c.
>>>>>>>>
>>>>>>>> Martin
>>>>>>>
>>>>>>>
>>>>
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