Disable _Float16 for non ARM/SPIR Targets

As Discussed here:
http://lists.llvm.org/pipermail/llvm-dev/2019-January/129543.html

There are problems exposing the _Float16 type on architectures that
haven't defined the ABI/ISel for the type yet, so we're temporarily
disabling the type and making it opt-in.

Differential Revision: https://reviews.llvm.org/D57188

Change-Id: I5db7366dedf1deb9485adb8948b1deb7e612a736

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@352221 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/include/clang/Basic/TargetInfo.h b/include/clang/Basic/TargetInfo.h
index 47ec150b54..6b5d96ab46 100644
--- a/include/clang/Basic/TargetInfo.h
+++ b/include/clang/Basic/TargetInfo.h
@@ -63,6 +63,7 @@ protected:
   bool HasLegalHalfType; // True if the backend supports operations on the half
                          // LLVM IR type.
   bool HasFloat128;
+  bool HasFloat16;
   unsigned char PointerWidth, PointerAlign;
   unsigned char BoolWidth, BoolAlign;
   unsigned char IntWidth, IntAlign;
@@ -516,6 +517,9 @@ public:
   /// Determine whether the __float128 type is supported on this target.
   virtual bool hasFloat128Type() const { return HasFloat128; }
 
+  /// Determine whether the _Float16 type is supported on this target.
+  virtual bool hasFloat16Type() const { return HasFloat16; }
+
   /// Return the alignment that is suitable for storing any
   /// object with a fundamental alignment requirement.
   unsigned getSuitableAlign() const { return SuitableAlign; }