llvm-debuginfo-analyzer is a command line tool that processes debug
info contained in a binary file and produces a debug information
format agnostic “Logical View”, which is a high-level semantic
representation of the debug info, independent of the low-level
format.
The code has been divided into the following patches:
1) Interval tree
2) Driver and documentation
3) Logical elements
4) Locations and ranges
5) Select elements
6) Warning and internal options
7) Compare elements
8) ELF Reader
9) CodeView Reader
Full details:
https://discourse.llvm.org/t/llvm-dev-rfc-llvm-dva-debug-information-visual-analyzer/62570
This patch:
Driver and documentation
- Command line options.
- Full documentation.
- String Pool table.
Reviewed By: psamolysov, probinson
Differential Revision: https://reviews.llvm.org/D125777
This adds llvm-remarkutil. This is intended to be a general tool for doing stuff
with/to remark files.
This patch gives it the following powers:
* `bitstream2yaml` - To convert bitstream remarks to YAML
* `yaml2bitstream` - To convert YAML remarks to bitstream remarks
These are both implemented as subcommands, like
`llvm-remarkutil bitstream2yaml <input_file> -o -`
I ran into an issue where I had some bitstream remarks coming from CI, and I
wanted to be able to do stuff with them (e.g. visualize them). But then I
noticed we didn't have any tooling for doing that, so I decided to write this
thing.
Being able to output YAML as a start seemed like a good idea, since it
would allow people to reuse any tooling they may have written based around YAML
remarks.
Hopefully it can grow into a more featureful remark utility. :)
Currently there are is an outstanding performance issue (see the TODO) with
the bitstream2yaml case. I decided that I'd keep the tool small to start with
and have the yaml2bitstream and bitstream2yaml cases be symmetric.
Also I moved the remarks documentation to its own header because it seems
a little out of place with "basic commands" and "developer tools"; it's
really kind of its own thing.
Differential Revision: https://reviews.llvm.org/D133646
This patch implements proposal https://lists.llvm.org/pipermail/llvm-dev/2020-August/144579.html
llvm-dwarfutil - is a tool that is used for processing debug info(DWARF) located in built binary files to improve debug info quality, reduce debug info size. The patch currently implements smaller set of command-line options(comparing to the proposal):
```
./llvm-dwarfutil [options] <input file> <output file>
--garbage-collection Do garbage collection for debug info(default)
-j <value> Alias for --num-threads
--no-garbage-collection Don`t do garbage collection for debug info
--no-odr-deduplication Don`t do ODR deduplication for debug types
--no-odr Alias for --no-odr-deduplication
--no-separate-debug-file
Create single output file, containing debug tables(default)
--num-threads <threads> Number of available threads for multi-threaded execution. Defaults to the number of cores on the current machine
--odr-deduplication Do ODR deduplication for debug types(default)
--odr Alias for --odr-deduplication
--separate-debug-file Create two output files: file w/o debug tables and file with debug tables
--tombstone [bfd,maxpc,exec,universal]
Tombstone value used as a marker of invalid address(default: universal)
=bfd - Zero for all addresses and [1,1] for DWARF v4 (or less) address ranges and exec
=maxpc - Minus 1 for all addresses and minus 2 for DWARF v4 (or less) address ranges
=exec - Match with address ranges of executable sections
=universal - Both: bfd and maxpc
```
Reviewed By: clayborg
Differential Revision: https://reviews.llvm.org/D86539
A new tool that compares TargetLibraryInfo's opinion of the availability
of library function calls against the functions actually exported by a
specified set of libraries. Can be helpful in verifying the correctness
of TLI for a given target, and avoid mishaps such as had to be addressed
in D107509 and 94b4598d.
The tool currently supports ELF object files only, although it's unlikely
to be hard to add support for other formats.
Re-commits 62dd488 with changes to use pre-generated objects, as not all
bots have ld.lld available.
Differential Revision: https://reviews.llvm.org/D111358
A new tool that compares TargetLibraryInfo's opinion of the availability
of library function calls against the functions actually exported by a
specified set of libraries. Can be helpful in verifying the correctness
of TLI for a given target, and avoid mishaps such as had to be addressed
in D107509 and 94b4598d.
The tool currently supports ELF object files only, although it's unlikely
to be hard to add support for other formats.
Differential Revision: https://reviews.llvm.org/D111358
This implements an LLVM tool that's flag- and output-compatible
with macOS's `otool` -- except for bugs, but from testing with both
`otool` and `xcrun otool-classic`, llvm-otool matches vanilla
otool's behavior very well already. It's not 100% perfect, but
it's a very solid start.
This uses the same approach as llvm-objcopy: llvm-objdump uses
a different OptTable when it's invoked as llvm-otool. This
is possible thanks to D100433.
Differential Revision: https://reviews.llvm.org/D100583
No longer rely on an external tool to build the llvm component layout.
Instead, leverage the existing `add_llvm_componentlibrary` cmake function and
introduce `add_llvm_component_group` to accurately describe component behavior.
These function store extra properties in the created targets. These properties
are processed once all components are defined to resolve library dependencies
and produce the header expected by llvm-config.
Differential Revision: https://reviews.llvm.org/D90848
This diff starts the implementation of llvm-libtool-darwin
(an llvm based replacement of cctool's libtool).
Libtool is used for creating static and dynamic libraries
from a bunch of object files given as input.
Reviewed by alexshap, smeenai, jhenderson, MaskRay
Differential Revision: https://reviews.llvm.org/D82923
The tool reports verbose output for the DWARF debug location coverage.
The llvm-locstats for each variable or formal parameter DIE computes what
percentage from the code section bytes, where it is in scope, it has
location description. The line 0 shows the number (and the percentage) of
DIEs with no location information, but the line 100 shows the number (and
the percentage) of DIEs where there is location information in all code
section bytes (where the variable or parameter is in the scope). The line
50..59 shows the number (and the percentage) of DIEs where the location
information is in between 50 and 59 percentage of its scope covered.
Differential Revision: https://reviews.llvm.org/D66526
The cause of the test failure was resolved.
llvm-svn: 373427
The tool reports verbose output for the DWARF debug location coverage.
The llvm-locstats for each variable or formal parameter DIE computes what
percentage from the code section bytes, where it is in scope, it has
location description. The line 0 shows the number (and the percentage) of
DIEs with no location information, but the line 100 shows the number (and
the percentage) of DIEs where there is location information in all code
section bytes (where the variable or parameter is in the scope). The line
50..59 shows the number (and the percentage) of DIEs where the location
information is in between 50 and 59 percentage of its scope covered.
Differential Revision: https://reviews.llvm.org/D66526
llvm-svn: 373317
The tool reports verbose output for the DWARF debug location coverage.
The llvm-locstats for each variable or formal parameter DIE computes what
percentage from the code section bytes, where it is in scope, it has
location description. The line 0 shows the number (and the percentage) of
DIEs with no location information, but the line 100 shows the number (and
the percentage) of DIEs where there is location information in all code
section bytes (where the variable or parameter is in the scope). The line
50..59 shows the number (and the percentage) of DIEs where the location
information is in between 50 and 59 percentage of its scope covered.
Differential Revision: https://reviews.llvm.org/D66526
llvm-svn: 373183
The tool reports verbose output for the DWARF debug location coverage.
The llvm-locstats for each variable or formal parameter DIE computes what
percentage from the code section bytes, where it is in scope, it has
location description. The line 0 shows the number (and the percentage) of
DIEs with no location information, but the line 100 shows the number (and
the percentage) of DIEs where there is location information in all code
section bytes (where the variable or parameter is in the scope). The line
50..59 shows the number (and the percentage) of DIEs where the location
information is in between 50 and 59 percentage of its scope covered.
Differential Revision: https://reviews.llvm.org/D66526
llvm-svn: 372554
The tool reports verbose output for the DWARF debug location coverage.
The llvm-locstats for each variable or formal parameter DIE computes what
percentage from the code section bytes, where it is in scope, it has
location description. The line 0 shows the number (and the percentage) of
DIEs with no location information, but the line 100 shows the number (and
the percentage) of DIEs where there is location information in all code
section bytes (where the variable or parameter is in the scope). The line
50..59 shows the number (and the percentage) of DIEs where the location
information is in between 50 and 59 percentage of its scope covered.
The tool will be very useful for tracking improvements regarding the
"debugging optimized code" support with LLVM ecosystem.
Differential Revision: https://reviews.llvm.org/D66526
llvm-svn: 371520
Summary:
This splits out a section in the command guide for llvm tools that can be used as replacements for GNU tools. For pages that didn't exist, I added stub pages that can be individually filled in by followup patches.
Tested by running `ninja docs-llvm-html` and inspecting locally.
Reviewers: jhenderson, MaskRay, grimar, alexshap
Reviewed By: jhenderson, MaskRay, grimar
Subscribers: smeenai, arphaman, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D63014
llvm-svn: 363100
Add docs (llvm-lipo.rst) for llvm-lipo.
Test plan:
make -j8 sphinx
check that ./docs/html/CommandGuide/llvm-lipo.html is built correctly and looks okay.
Differential revision: https://reviews.llvm.org/D62706
llvm-svn: 362848
On the Command Guide page, there are multiple sections with links to the
different documentation pages available for LLVM tools. The "Basic
Tools" section includes tools like llvm-objdump, llvm-nm and so on. The
"Developer Tools" section contains things like FileCheck and lit. This
change moves llvm-readobj into the former block, from the latter.
Reviewed by: MaskRay
Differential Revision: https://reviews.llvm.org/D63011
llvm-svn: 362813
This adds an alias for llvm-symbolizer with different defaults so that
it can be used as a drop-in replacement for GNU's addr2line.
If a substring "addr2line" is found in the tool's name:
* it defaults "-i", "-f" and "-C" to OFF;
* it uses "--output-style=GNU" by default.
Differential Revision: https://reviews.llvm.org/D60067
llvm-svn: 358749
add a tool to generate symbol remapping files.
Summary:
The new tool llvm-cxxmap builds a symbol mapping table from a file containing
a description of partial equivalences to apply to mangled names and files
containing old and new symbol tables.
Reviewers: davidxl
Subscribers: mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D51470
llvm-svn: 342168
Summary:
Add a CommandGuide for llvm-objdump summarizing its usage along with some
general context.
Reviewers: beanz
Reviewed By: beanz
Subscribers: Eugene.Zelenko, llvm-commits
Differential Revision: https://reviews.llvm.org/D50034
llvm-svn: 339250
Summary:
[llvm-exegesis][RFC] Automatic Measurement of Instruction Latency/Uops
This is the code corresponding to the RFC "llvm-exegesis Automatic Measurement of Instruction Latency/Uops".
The RFC is available on the LLVM mailing lists as well as the following document
for easier reading:
https://docs.google.com/document/d/1QidaJMJUyQdRrFKD66vE1_N55whe0coQ3h1GpFzz27M/edit?usp=sharing
Subscribers: mgorny, gchatelet, orwant, llvm-commits
Differential Revision: https://reviews.llvm.org/D44519
llvm-svn: 329156
Introducing llvm-profdata, a tool for merging profile data generated by
PGO instrumentation in clang.
- The name indicates a file extension of <name>.profdata. Eventually
profile data output by clang should be changed to that extension.
- llvm-profdata merges two profiles. However, the name is more general,
since it will likely pick up more tasks (such as summarizing a single
profile).
- llvm-profdata parses the current text-based format, but will be
updated once we settle on a binary format.
<rdar://problem/15949645>
llvm-svn: 201535
Archive files (.a) can have a symbol table indicating which object
files in them define which symbols. The purpose of this symbol table
is to speed up linking by allowing the linker the read only the .o
files it is actually going to use instead of having to parse every
object's symbol table.
LLVM's archive library currently supports a LLVM specific format for
such table. It is hard to see any value in that now that llvm-ld is
gone:
* System linkers don't use it: GNU ar uses the same plugin as the
linker to create archive files with a regular index. The OS X ar
creates no symbol table for IL files, I assume the linker just parses
all IL files.
* It doesn't interact well with archives having both IL and native objects.
* We probably don't want to be responsible for yet another archive
format variant.
This patch then:
* Removes support for creating and reading such index from lib/Archive.
* Remove llvm-ranlib, since there is nothing left for it to do.
We should in the future add support for regular indexes to llvm-ar for
both native and IL objects. When we do that, llvm-ranlib should be
reimplemented as a symlink to llvm-ar, as it is equivalent to "ar s".
llvm-svn: 184019
Before we learned about :doc:, we used :ref: and put a dummy link at the
top of each page. Don't do that anymore.
This fixes PR14891 as a special case.
llvm-svn: 172162
Carlos Alberto Enciso