Defined in 3 files as a typedef:
- external/bsd/llvm/dist/clang/test/CodeGen/64bit-swiftcall.c, line 290 (as a typedef)
- external/bsd/llvm/dist/clang/test/CodeGen/arm-swiftcall.c, line 318 (as a typedef)
- external/bsd/llvm/dist/clang/test/CodeGen/windows-swiftcall.c, line 281 (as a typedef)