[StrictFP] Make getStrictFPOpcodeAction(...) more accessible

NFCI. This function will be reused in upcoming patches.

Differential Revision: https://reviews.llvm.org/D47380



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333433 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed