Add triples or specify REQUIRES: default_triple to some tests

These were all failing when building the X86 backend but specifying
LLVM_DEFAULT_TARGET_TRIPLE=''.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@323608 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed