[Thumb1] AND with a constant operand can be converted into BIC

So model the cost of materializing the constant operand C as the minimum of
C and ~C.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280929 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed