[CodeGen]: Fix bad interaction with AntiDep breaking and inline asm.

AggressiveAntiDepBreaker was renaming registers specified by the user
for inline assembly. While this will work for compiler-specified
registers, it won't work for user-specified registers, and at the time
this runs, I don't currently see a way to distinguish them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254532 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed