search for: zerocost

...IR manipulations, like bitcode loading and storing, should not. Unwinder family implementations should be resilient (if suboptimal) against unexpected but well-formed configuration data --- for example, it should be possible to use a new personality function with the libunwind-zerocost-dwarf unwinder family, and as long as that personality uses an LSDA that looks like the zerocost DWARF LSDA, everything should be fine. Unwinders generally operate in units of call frames. When considering a call frame, an unwinder must have a complete idea of the frame's desired unwi...