KDAB engineer Shivam Kunwar contributed a fix to LLVM/Clang that enables debuggers to display constexpr array contents in optimized builds. Previously, inspecting static constexpr arrays under -O2 showed "no symbol in current context", now GDB and LLDB show the actual values. A small but meaningful improvement for anyone debugging optimized C++. #LLVM #Clang #DebugInfo #DWARF #CPlusPlus #OpenSource

More details:
https://github.com/llvm/llvm-project/pull/182442

Locations and combing statements.
Which location to use?
Say we have:
```
if (a)
t = STMT(b);
else
t = STMT(c);
```
We combine this into:
```
if (a)
t = b;
else
t = c;
STMT(t)
```
What location should be used for the new STMT? So with PHIs we have one extra location of the phi and the phi arguments each have a location.
So at least the location of the new phi args will be the same as the stmt/stmt originally was. But what should be the new stmt. I chose it to be location of the phi and if that does not exist either location of the stmts (if one but not both have a location).

#debuginfo #GCC #locations

Yesterday we published the next recording from the #LLVM #Meetup #Darmstadt

Alexander Hueck - Opaque Pointers and Debug Info [LLVM Meetup Darmstadt March 2023]
https://youtu.be/bQIxgYMmWn4

Go check it out to learn a bit more about #DebugInfo and #OpaquePointers in the light of a #Typechecker for #MPI programs

#HPC #ProgramAnalysis

C++OnSea 2024 SESSION ANNOUNCEMENT: Fix Your Hardest Bugs With Ease With Time Travel Debugging by Greg Law

https://cpponsea.uk/2024/sessions/fix-your-hardest-bugs-with-ease-with-time-travel-debugging

Register now at https://cpponsea.uk/tickets/

#tooling #debuggers #debuginfo #cpp #cplusplus

C++OnSea 2024 SESSION ANNOUNCEMENT: Fix Your Hardest Bugs With Ease With Time Travel Debugging by Greg Law

https://cpponsea.uk/2024/sessions/fix-your-hardest-bugs-with-ease-with-time-travel-debugging

Register now at https://cpponsea.uk/tickets/

#tooling #debuggers #debuginfo #cpp #cplusplus