[Builtin][ARM] Fix subsf3vfp for non-HF target
[Builtin][ARM] Fix subsf3vfp for non-HF target

Reviewers: rengolin, compnerd

Reviewed By: compnerd

Subscribers: hans, aemerson

Differential Revision: https://reviews.llvm.org/D29869

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@294886 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt