[lldb] [llvm] [lldb][Windows] WoA HW Watchpoint support in LLDB (PR #108072)

[David Spickett via llvm-commits]

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@@ -575,6 +575,10 @@ Changes to LLDB
      24   int main() {
   Likely cause: f->b->d accessed 0x4
   ```
+* LLDB now supports hardware watchpoints for AArch64 Windows targets. Windows
+  does not provide API to query the number of supported hardware watchpoints.
+  Therefore current implementation allows only 1 watchpoint, as tested with
+  Windows 11 on the Microsoft SQ2 and Snapdragon Elite X platforms.
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DavidSpickett wrote:

Only thing I can think of is perhaps `check-lldb` at `-j1` manages to start the new processes faster than running the test using lit alone. You could try running one of the tests using lit, in a loop.

But it's not like we don't have watchpoint glitches elsewhere, and if it's a kernel problem, this PR is certainly not going to fix that. So I think we say this is one more reason this feature is experimental.

https://github.com/llvm/llvm-project/pull/108072