aaron.ballman added inline comments.

================
Comment at: clang/lib/AST/ItaniumMangle.cpp:3267
   case CC_PreserveAll:
+  case CC_RISCVVectorCall:
     // FIXME: we should be mangling all of the above.
----------------
Is it possible to use this calling convention on Windows where we'd hit the 
Microsoft name mangler?


================
Comment at: clang/test/CodeGen/RISCV/riscv-vector-cc-attr.c:1
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
+// REQUIRES: riscv-registered-target
----------------
You should also have Sema tests for various things (attribute accepts no 
arguments, only applies to functions, does/doesn't silently convert to cdecl, 
etc). You should also have some tests using the attribute as a type attribute 
instead of a declaration attribute.

You should also have C++ tests for Sema and codegen for things like putting the 
calling convention on a member function or a lambda to ensure those do 
reasonable things with the convention.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D154576/new/

https://reviews.llvm.org/D154576

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