Stub CALLEE_SAVED_BARRIER for MSVC
commit282c311e1a73178c798af0110ce57733d76ed801
authorOrvid King <blah38621@gmail.com>
Tue, 25 Aug 2015 17:40:41 +0000 (25 10:40 -0700)
committerhhvm-bot <hhvm-bot@fb.com>
Tue, 25 Aug 2015 18:01:05 +0000 (25 11:01 -0700)
tree3c02d849d33a84a22f7f89e781148475a42d8037
parentf25f98f89e7073abe58c328ca7ad03938ddda432
Stub CALLEE_SAVED_BARRIER for MSVC

Summary: There isn't a way to force MSVC to save the registers, so this will likely have to be done with a pair of assembly stubs.
For now, just `always_assert(false);`.
Closes https://github.com/facebook/hhvm/pull/6119

Reviewed By: @sgolemon

Differential Revision: D2375960
hphp/runtime/vm/jit/back-end-x64.cpp