Implement the clang-side of detection for when to pass as
<2 x float> instead of double.  This works but can't be turned
on until I teach codegen to pass <2 x float> as one XMM register
instead of two.

llvm-svn: 109790
1 file changed
tree: 1d31fd1166df2cb3004a84a6c357daddad65d85c
  1. clang/
  2. compiler-rt/
  3. libcxx/
  4. lldb/
  5. llvm/