[lldb-dev] LLDB and Swift

[Kamil Rytarowski via lldb-dev]

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Very nice. Congrats on your release!

On 04.12.2015 00:03, Todd Fiala via lldb-dev wrote:
> Hi all,
> 
> Earlier today, you may have heard that Swift went open source over 
> at swift.org <http://swift.org/>.  I just wanted to take a moment
> to mention the Swift debugger and REPL and how they relate to
> LLDB.
> 
> Swift’s Debugger and REPL are built on LLDB’s source-level plug-in 
> architecture.  As such, the Swift Debugger repository at
> github.com/apple/swift-lldb <http://github.com/apple/swift-lldb>
> naturally contains the LLDB source from llvm.org
> <http://llvm.org/>’s LLDB repository, plus additions for Swift
> language support. We merge regularly and make every attempt to 
> minimize our differences with llvm.org <http://llvm.org/>’s LLDB.
> For more information on how we’re handling this, have a look at
> swift.org/contributing/#llvm-and-swift 
> <http://swift.org/contributing/#llvm-and-swift>.
> 
> As we’ve worked hard to make it straightforward to develop
> additive-only language support in LLDB, the Swift support can
> readily be found by finding the new files in the swift-lldb
> repository vs. those found at llvm.org/svn/llvm-project/lldb/trunk 
> <http://llvm.org/svn/llvm-project/lldb/trunk/>.  For the rest of
> the LLDB files in common, we do still have a small number of diffs 
> in github.com/apple/swift-lldb <http://github.com/apple/swift-lldb>
> vs. llvm.org <http://llvm.org/> TOT.  We will work through
> upstreaming these quickly.  I’ll touch on some of those differences
> briefly here:
> 
> * Several minor places where full language abstraction hasn’t yet 
> occurred, where we’re explicitly checking for Swift-related
> details. Abstracting out those remaining places and providing the
> hooks in llvm.org <http://llvm.org/> LLDB will benefit all
> languages.
> 
> * Printed-form version string handling.  The ‘lldb -v’ and ‘(lldb) 
> version’ commands create a different version string in both Xcode
> and cmake-based Swift LLDB.  We will work to incorporate this into
> llvm.org <http://llvm.org/> LLDB once the language/component
> version support info is properly abstracted out.
> 
> * Test infrastructure.  There are a few places where Swift
> language support (e.g. swift compiler flags, runtime support
> directories, etc.) are added in order to enable building
> Swift-based test inferiors.  We may be able to rearrange things to
> make those language-specific additions more readily pluggable in
> the core LLDB test runner.
> 
> We look forward to upstreaming the differences in common files in
> the coming days and weeks.
> 
> Please feel free to contact me if you have any questions.
> 
> Thanks!
> 
> -Todd
> 
> 
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