[PATCH] Allow __fp16 as a function arg or return type for AArch64

[Oliver Stannard]

This patch now makes half a valid IR type that can be emitted for AArch64. It can be passed to and returned from functions by value, and we use the normal IR instructions to convert between half and float, but we retain the C semantics of always promoting to float before performing any arithmetic operations on them.

http://reviews.llvm.org/D4456

Files:
  include/clang/Basic/LangOptions.def
  include/clang/Driver/CC1Options.td
  lib/CodeGen/CGExprConstant.cpp
  lib/CodeGen/CGExprScalar.cpp
  lib/CodeGen/CodeGenTypes.cpp
  lib/CodeGen/TargetInfo.cpp
  lib/Driver/Tools.cpp
  lib/Frontend/CompilerInvocation.cpp
  lib/Sema/SemaType.cpp
  test/CodeGen/arm64-aapcs-arguments.c
-------------- next part --------------
A non-text attachment was scrubbed...
Name: D4456.12436.patch
Type: text/x-patch
Size: 14429 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20140813/13cf81ca/attachment.bin>