[Autobackout][FuncReg]Revert of change: ecbd285

 Updated implementation of sub_group_ballot_*

Updated the implementation of sub_group_ballot_* function to use max
subgroup size instead of current subgroup size.

Author: Quetzonarch

IGC/BiFModule/Implementation/group.cl

@@ -2073,7 +2073,7 @@ uint SPIRV_OVERLOADABLE SPIRV_BUILTIN(GroupNonUniformBallotBitCount, _i32_i32_v4
     uint result = 0;
     if (Execution == Subgroup)
     {
-        uint sgsize = SPIRV_BUILTIN_NO_OP(BuiltInSubgroupMaxSize, , )();
+        uint sgsize = SPIRV_BUILTIN_NO_OP(BuiltInSubgroupSize, , )();
         uint sglid = SPIRV_BUILTIN_NO_OP(BuiltInSubgroupLocalInvocationId, , )();
         uint consideredBits = Value.x << (32 - sgsize);
         // intended fallthrough in the switch statement
@@ -2104,7 +2104,7 @@ uint SPIRV_OVERLOADABLE SPIRV_BUILTIN(GroupNonUniformBallotFindMSB, _i32_v4i32,
 {
     if (Execution == Subgroup)
     {
-        uint sgsize = SPIRV_BUILTIN_NO_OP(BuiltInSubgroupMaxSize, , )();
+        uint sgsize = SPIRV_BUILTIN_NO_OP(BuiltInSubgroupSize, , )();
         uint consideredBits = Value.x << (32 - sgsize);
         return (sgsize - 1) - SPIRV_OCL_BUILTIN(clz, _i32, )((int)consideredBits);
     }