[mips] Range check simm32 and fold MIPS16's imm32 into simm32.

Summary:
At this point we should be able to enable IAS by default for O32 without
breaking check-all, or recursion.

Reviewers: vkalintiris

Subscribers: dsanders, llvm-commits

Differential Revision: http://reviews.llvm.org/D18439

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@265302 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed