Dario Domizioli c4fb8ca7aa Fix ctor/dtor aliases losing 'dllexport' (for Itanium ABI) ...

This patch makes sure that the dllexport attribute is transferred to the alias when such alias is created. It only affects the Itanium ABI because for the MSVC ABI a workaround is in place to not generate aliases of dllexport ctors/dtors.
A new CodeGenModule function is provided, CodeGenModule::setAliasAttributes, to factor the code for transferring attributes to aliases.

llvm-svn: 218159

2014-09-19 22:06:24 +00:00

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