Reland
D23318594 and
D23318592 add recordbasenativesp instr
Summary:
This relands
D23318594 (https://github.com/facebook/hhvm/commit/
8b4db699cd80be300f283013e0cf0b21f25ef4b2) and
D23318592 (https://github.com/facebook/hhvm/commit/
843ef651accdf41cf592f75d2cb9bbee9e173031) with a bug fix in vasm-xls for cases where
we have copy fixups along an edge without a base native sp recorded.
Reviewed By: ricklavoie
Differential Revision:
D23452297
fbshipit-source-id:
ac829ea31035eeca782ea1e018f8af9b9fd1c7b1