Alpha VM on Solaris UltraSPARC?

[Nick Forde]

I investigated this problem a bit more and found the following
thread which suggests why -mno-fastest-structs is being ignored.

http://gcc.gnu.org/ml/gcc/2003-08/msg01043.html

Using the GCC packed attribute as follows will force the compiler to
do the right thing and -O2 works OK. The whole struct could be
flagged BYTE_ALIGNED but this seems a bit cautious given the
potential performance implications.

Nick.


#define BYTE_ALIGNED __attribute__ ((packed))

struct MethodDefinition
{
   struct ObjectHeader header;
   struct Map * map;
   ObjectPointer traits;
   ObjectPointer method;
   ObjectPointer slotAccessor;
   unsigned long int dispatchPositions;
   unsigned long long int dispatchID BYTE_ALIGNED;
   unsigned long int foundPositions;
   unsigned long int dispatchRank;
};

struct Map
{
   struct ObjectHeader header;
   struct Map * map;
   ObjectPointer traits;
   ObjectPointer flags;
   ObjectPointer representative;
   ObjectPointer numDelegates;
   ObjectPointer numSlots;
   struct SlotTable * slotTable;
   struct RoleTable * roleTable;
   unsigned long int visitedPositions;
   unsigned long long int dispatchID BYTE_ALIGNED;
};