[MachineOutliner] Clean up subtarget handling.
Call shouldOutlineFromFunctionByDefault, isFunctionSafeToOutlineFrom,
getOutliningType, and getMachineOutlinerMBBFlags using the correct
TargetInstrInfo. And don't create a MachineFunction for a function
declaration.
The call to getOutliningCandidateInfo is still a little weird, but at
least the weirdness is explicitly called out.
Differential Revision: https://reviews.llvm.org/D49880
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@338465 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed