llvm/test/CodeGen/X86/vector-gep.ll: Appease to add -mtriple=i686-linux.

This doesn't pass if stack alignment is not 16, like cygming, *bsd.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212334 91177308-0d34-0410-b5e6-96231b3b80d8
llvm/test/CodeGen/XCore/dwarf_debug.ll: Fix not to be affected by *-win32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212335 91177308-0d34-0410-b5e6-96231b3b80d8
GlobalDCE: Delete available_externally initializers if it allows removing the value the initializer is referring to.

This is useful for functions that are not actually available externally but
referenced by a vtable of some kind. Clang emits functions like this for the MS
ABI.

PR20182.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212337 91177308-0d34-0410-b5e6-96231b3b80d8