[X86] Extend load-op-store fusion merge to ADC/SBB.

Summary: Add handling of EFLAG input to X86 Load-op-store fusion checking.

Reviewers: craig.topper, RKSimon

Subscribers: llvm-commits, hiraditya

Differential Revision: https://reviews.llvm.org/D42128

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@322952 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed