mlugg 156cd8f678

std.debug: significantly speed up capturing stack traces ...

By my estimation, these changes speed up DWARF unwinding when using the
self-hosted x86_64 backend by around 7x. There are two very significant
enhancements: we no longer iterate frames which don't fit in the stack
trace buffer, and we cache register rules (in a fixed buffer) to avoid
re-parsing and evaluating CFI instructions in most cases. Alongside this
are a bunch of smaller enhancements, such as pre-caching the result of
evaluating the CIE's initial instructions, avoiding re-parsing of CIEs,
and big simplifications to the `Dwarf.Unwind.VirtualMachine` logic.

2025-09-30 13:44:56 +01:00

..

VirtualMachine.zig

std.debug: significantly speed up capturing stack traces

2025-09-30 13:44:56 +01:00