[PATCH] AArch64 Neon scalar floating-point to signed/unsigned integer convert instructions

[mcrosier at codeaurora.org]

All,
The attached patches contain clang front-end and LLVM back-end code
changes to add support for NEON scalar floating-point to signed/unsigned
integer convert instructions.

I had a great deal of trouble trying to reuse the ARM intrinsics.  If I
tried to use the overloaded intrinsics I kept hitting an assert in
CodeGenModule::getIntrinsic(unsigned IID, ArrayRef< llvm::Type * > Tys). 
Specifically, the encoding in it IIT_Table would cause Tys[1] to be
dereferenced, but the array is of length one.  I'm not exactly sure why
this is happening or how these tables are encoded.

If someone could point me in the right direction, I would greatly
appreciate it.

  Chad
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