[PATCH] D18138: Add -fnative-half-arguments-and-returns

[Pirama Arumuga Nainar via cfe-commits]

pirama created this revision.
pirama added reviewers: srhines, olista01.
pirama added a subscriber: cfe-commits.

r246764 handled __fp16 arguments and returns for AAPCS, but skipped this
handling for OpenCL.  Simlar to OpenCL, RenderScript also handles __fp16
type natively.

This patch adds the -fnative-half-arguments-and-returns command line
flag to allow such languages to skip this coercion of __fp16.

http://reviews.llvm.org/D18138

Files:
  include/clang/Basic/LangOptions.def
  include/clang/Driver/CC1Options.td
  lib/CodeGen/TargetInfo.cpp
  lib/Frontend/CompilerInvocation.cpp
  test/CodeGen/arm-fp16-arguments.c

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