TargetMachine::shouldAssumeDSOLocal currently implies dso_local for such definitions.
Adding explicit dso_local makes these tests align with the clang -fno-pic behavior
and allow the removal of the TargetMachine::shouldAssumeDSOLocal special case.
If no alignment is set, the abi/preferred alignment of structs will be
used which may be higher than required. This can lead to extra padding
and in the end an increase in data size.
Differential Revision: https://reviews.llvm.org/D47633
llvm-svn: 334099