Commit Graph

15 Commits

Author SHA1 Message Date
Matt Davis 582274329e [llvm-cxxfilt] Fix a comment typo. NFC.
llvm-svn: 354094
2019-02-15 02:43:14 +00:00
Matt Davis 22c21934ce [llvm-cxxfilt] Split and demangle stdin input
Summary:
Originally, llvm-cxxfilt would treat a line as a single mangled item to be demangled.
If a mangled name appears in the middle of that string, that name would not be demangled.

GNU c++filt  splits and demangles every word  in a  string that is piped to it via stdin.
Prior to this patch llvm-cxxfilt would never split strings  piped to it.
This patch replicates the GNU behavior and splits strings that are piped to it via stdin.

This fixes PR39990

Reviewers: compnerd, jhenderson, davide

Reviewed By: compnerd, jhenderson

Subscribers: erik.pilkington, jhenderson, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D57350

llvm-svn: 353743
2019-02-11 20:30:53 +00:00
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Rui Ueyama 197194b6c9 Define InitLLVM to do common initialization all at once.
We have a few functions that virtually all command wants to run on
process startup/shutdown. This patch adds InitLLVM class to do that
all at once, so that we don't need to copy-n-paste boilerplate code
to each llvm command's main() function.

Differential Revision: https://reviews.llvm.org/D45602

llvm-svn: 330046
2018-04-13 18:26:06 +00:00
Adam Nemet 95e0c5fc6c Add opt-viewer testing
Detects whether we have the Python modules (pygments, yaml) required by
opt-viewer and hooks this up to REQUIRES.

This fixes https://bugs.llvm.org/show_bug.cgi?id=34129 (the lack of opt-viewer
testing).

It's also related to https://github.com/apple/swift/pull/12938 and the idea is
to expose LLVM_HAVE_OPT_VIEWER_MODULES to the Swift cmake.

Differential Revision: https://reviews.llvm.org/D40202

Fixes since the first commit:
1. Disable syntax highlighting as different versions of pygments generate
different HTML
2. Use llvm-cxxfilt from the build

llvm-svn: 319324
2017-11-29 17:07:41 +00:00
Saleem Abdulrasool 1723b8bbbc c++filt: support COFF import thunks
The synthetic thunk for the import is prefixed with __imp_.  Attempt to
undecorate the names when they begin with the __imp_ prefix.

llvm-svn: 298550
2017-03-22 21:15:19 +00:00
Saleem Abdulrasool e5f6daa475 llvm-cxxfilt: support `-_`
Add the `--strip-underscore` option to llvm-cxxfilt to strip the leading
underscore.  This is useful for when dealing with targets which add a
leading underscore.

llvm-svn: 292759
2017-01-22 17:41:10 +00:00
Saleem Abdulrasool 4c33f7f2e3 llvm-cxxfilt: support the `-s` option
This is a stub implementation of the `-s` or `--format` option that
allows the user to specify the demangling style.  Since we only support
the Itanium (GNU) style demangling, auto is synonymous with `gnu`.
Simply swallow the option to permit some level of commandline
compatibility.

llvm-svn: 292706
2017-01-21 02:36:26 +00:00
Saleem Abdulrasool d3cbf2683d llvm-cxxfilt: add missing includes from previous change
llvm-svn: 292580
2017-01-20 05:33:22 +00:00
Saleem Abdulrasool f1790c2c30 llvm-cxxfilt: fix program description
Fix a silly copy-paste error in the tool description.  Take the
opportunity to add crash stack printing which will hopefully never be
needed.

llvm-svn: 292579
2017-01-20 05:27:09 +00:00
Saleem Abdulrasool a63fd043fd llvm-cxxfilt: support `-t` to demangle types
By default c++filt demangles functions, though you can optionally pass
`-t` to have it decode types as well, behaving nearly identical to
`__cxa_demangle`.  Add support for this mode.

llvm-svn: 292576
2017-01-20 04:25:26 +00:00
Saleem Abdulrasool c8bcda2b56 llvm-cxxfilt: filter out invalid manglings
c++filt does not attempt to demangle symbols which do not match its
expected format.  This means that the symbol must start with _Z or ___Z
(block invocation function extension).  Any other symbols are returned
as is.  Note that this is different from the behaviour of __cxa_demangle
which will demangle fragments.

llvm-svn: 292467
2017-01-19 02:58:46 +00:00
Saleem Abdulrasool 7091820a96 llvm-cxxfilt: support reading from stdin
`c++filt` when given no arguments runs as a REPL, decoding each line as a
decorated name.  Unify the test structure to be more uniform, with the tests for
llvm-cxxfilt living under test/tools/llvm-cxxfilt.

llvm-svn: 286777
2016-11-13 20:43:38 +00:00
Davide Italiano c37eb11f35 [llvm-cxxfilt] Use llvm::outs(). Simplify.
This adds a dependency on Support/. As llvm-cxxfilt will grow
support for options this will be needed anyway.

llvm-svn: 282523
2016-09-27 18:50:30 +00:00
Rafael Espindola b940b66c60 Add an c++ itanium demangler to llvm.
This adds a copy of the demangler in libcxxabi.

The code also has no dependencies on anything else in LLVM. To enforce
that I added it as another library. That way a BUILD_SHARED_LIBS will
fail if anyone adds an use of StringRef for example.

The no llvm dependency combined with the fact that this has to build
on linux, OS X and Windows required a few changes to the code. In
particular:

    No constexpr.
    No alignas

On OS X at least this library has only one global symbol:
__ZN4llvm16itanium_demangleEPKcPcPmPi

My current plan is:

    Commit something like this
    Change lld to use it
    Change lldb to use it as the fallback

    Add a few #ifdefs so that exactly the same file can be used in
    libcxxabi to export abi::__cxa_demangle.

Once the fast demangler in lldb can handle any names this
implementation can be replaced with it and we will have the one true
demangler.

llvm-svn: 280732
2016-09-06 19:16:48 +00:00