[Lldb-commits] [lldb] [lldb][Windows] Fix x86_64 default unwind plan (PR #210076)

[Jason Molenda via lldb-commits]

jasonmolenda wrote:

FTR I wouldn't be shocked if Windows codegen is omit-frame-pointer by default.  On 32-bit i386 it was a real performance boost to get one more general purpose register (rbp).  On 64-bit x86_64, it's a much smaller performance boost but they were probably in the habit of that  codegen style already, and stuck with it.  On targets like AArch64 or RISC-V, the register file is quite large and there's no benefit to omit-frame-pointer.

https://github.com/llvm/llvm-project/pull/210076