Allow target to specify about using minimum alignment vs preferred. Takes care of

FIXME: Override "preferred align" for double and long long for ARM apcs-gnu ABI. 
Also part of rdar://9802874

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135940 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/include/clang/Basic/TargetInfo.h b/include/clang/Basic/TargetInfo.h
index e09098ea05..a8d12ce446 100644
--- a/include/clang/Basic/TargetInfo.h
+++ b/include/clang/Basic/TargetInfo.h
@@ -88,6 +88,7 @@ protected:
 
   unsigned HasAlignMac68kSupport : 1;
   unsigned RealTypeUsesObjCFPRet : 3;
+  unsigned UsePreferredTypeAlign : 1;
 
   // TargetInfo Constructor.  Default initializes all fields.
   TargetInfo(const std::string &T);
@@ -272,6 +273,12 @@ public:
     return HasAlignMac68kSupport;
   }
 
+  /// usePreferredTypeAlign - Check whether this target uses minimum alignment
+  /// defined by ABI or some other preferred alignment.
+  bool usePreferredTypeAlign() const {
+    return UsePreferredTypeAlign;
+  }
+
   /// getTypeName - Return the user string for the specified integer type enum.
   /// For example, SignedShort -> "short".
   static const char *getTypeName(IntType T);