Basic support for parsing Mach-O universal binaries in LLVMObject library

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184191 91177308-0d34-0410-b5e6-96231b3b80d8
Don't use PathV1.h in tools/bugpoint/Miscompilation.cpp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184193 91177308-0d34-0410-b5e6-96231b3b80d8
Convert some uses of eraseFromDisk.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184196 91177308-0d34-0410-b5e6-96231b3b80d8
Remove usage of PathV1.h from OptimizerDriver.cpp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184198 91177308-0d34-0410-b5e6-96231b3b80d8
Add a return value to make this function more useful.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184200 91177308-0d34-0410-b5e6-96231b3b80d8
Scan the successor blocks and use the PHI nodes as a hint for possible chain roots.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184201 91177308-0d34-0410-b5e6-96231b3b80d8