Continuing on from D105780, this should be the last major bit of
attribute cleanup. Currently, LLParser implements attribute parsing
for functions, parameters and returns separately, enumerating all
supported (and unsupported) attributes each time. This patch
extracts the common parsing logic, and performs a check afterwards
whether the attribute is valid in the given position. Parameters
and returns are handled together, while function attributes need
slightly different logic to support attribute groups.
Differential Revision: https://reviews.llvm.org/D105938
constants in commented-out part of LLVMAttribute enum. Add tests that verify
that the safestack attribute is only allowed as a function attribute.
llvm-svn: 239772
Nikita Popov