RuntimeLibcalls: Add entries for some exception related functions

SjLjEHPrepare and WasmEHPrepare directly emit calls to these by
name, and these are not tracked in RuntimeLibcalls. It will be easier
to fix this when RuntimeLibcalls is turned into an analysis, so just
add the entries for now.

Author: arsenm

llvm/include/llvm/IR/RuntimeLibcalls.td

@@ -286,6 +286,9 @@ foreach MemSize = [1, 2, 4, 8, 16] in {
 
 // Exception handling
 def UNWIND_RESUME : RuntimeLibcall;
+def UNWIND_REGISTER : RuntimeLibcall;
+def UNWIND_UNREGISTER : RuntimeLibcall;
+def UNWIND_CALL_PERSONALITY : RuntimeLibcall;
 def CXA_END_CLEANUP : RuntimeLibcall;
 
 // Note: there are two sets of atomics libcalls; see
@@ -987,6 +990,9 @@ defm sincos : LibmLongDoubleLibCall;
 def bzero : RuntimeLibcallImpl<BZERO>;
 def __bzero : RuntimeLibcallImpl<BZERO>;
 def _Unwind_SjLj_Resume : RuntimeLibcallImpl<UNWIND_RESUME>;
+def _Unwind_SjLj_Register : RuntimeLibcallImpl<UNWIND_REGISTER>;
+def _Unwind_SjLj_Unregister : RuntimeLibcallImpl<UNWIND_UNREGISTER>;
+def _Unwind_CallPersonality : RuntimeLibcallImpl<UNWIND_CALL_PERSONALITY>;
 
 // Used on OpenBSD
 def __stack_smash_handler : RuntimeLibcallImpl<STACK_SMASH_HANDLER>;