Change AsmName's type from StringRef to std::string. AsmName was pointing to a temporary string object that was destroyed. This is undefined behavior and MSVC didn't like it.
Change AsmName's type from StringRef to std::string. AsmName was pointing to a temporary string object that was destroyed. This is undefined behavior and MSVC didn't like it.

This fixes over 300+ failing tests on MSVC.
Credit for this fix goes to chapuni.

git-svn-id: a4a6f32337ebd29ad4763b423022f00f68d1c7b7@134064 91177308-0d34-0410-b5e6-96231b3b80d8

lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx