[X86] PR26575: Fix LEA optimization pass.

Add a missing check for a type of address displacement operand of the load/store instruction being a candidate for LEA substitution.

Ref: https://llvm.org/bugs/show_bug.cgi?id=26575

Differential Revision: http://reviews.llvm.org/D17261



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260959 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed