[SPARC] Support 'f' and 'e' inline asm constraints.

Based on patch by Patrick Boettcher and Chris Dewhurst.

Differential Revision: https://reviews.llvm.org/D29116

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302911 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed