Add -fnative-half-arguments-and-returns

Summary:
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.

Reviewers: srhines, olista01

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D18138

llvm-svn: 263795

1 files changed, 2 insertions, 2 deletions

diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp
index 1748cd2ba57..de568b51e0c 100644
--- a/clang/lib/CodeGen/TargetInfo.cpp
+++ b/clang/lib/CodeGen/TargetInfo.cpp
@@ -5106,7 +5106,7 @@ ABIArgInfo ARMABIInfo::classifyArgumentType(QualType Ty,
   // __fp16 gets passed as if it were an int or float, but with the top 16 bits
   // unspecified. This is not done for OpenCL as it handles the half type
   // natively, and does not need to interwork with AAPCS code.
-  if (Ty->isHalfType() && !getContext().getLangOpts().OpenCL) {
+  if (Ty->isHalfType() && !getContext().getLangOpts().NativeHalfArgsAndReturns) {
     llvm::Type *ResType = IsEffectivelyAAPCS_VFP ?
       llvm::Type::getFloatTy(getVMContext()) :
       llvm::Type::getInt32Ty(getVMContext());
@@ -5298,7 +5298,7 @@ ABIArgInfo ARMABIInfo::classifyReturnType(QualType RetTy,
   // __fp16 gets returned as if it were an int or float, but with the top 16
   // bits unspecified. This is not done for OpenCL as it handles the half type
   // natively, and does not need to interwork with AAPCS code.
-  if (RetTy->isHalfType() && !getContext().getLangOpts().OpenCL) {
+  if (RetTy->isHalfType() && !getContext().getLangOpts().NativeHalfArgsAndReturns) {
     llvm::Type *ResType = IsEffectivelyAAPCS_VFP ?
       llvm::Type::getFloatTy(getVMContext()) :
       llvm::Type::getInt32Ty(getVMContext());