[Autobackout][FunctionalRegression]Revert of change: fc6d6c4: ACC update

ACC option update

Author: sys-igc

visa/G4_IR.cpp

@@ -7026,18 +7026,9 @@ bool G4_INST::isSupportedAccDstType() const {
   case Type_DF:
   case Type_Q:
   case Type_UQ:
-  case Type_BF:
-    return true;
   case Type_D:
   case Type_UD:
-    if (getExecSize() != builder.getNativeExecSize()) {
-      switch (opcode()) {
-      case G4_addc:
-        return false;
-      default:
-        return true;
-      }
-    }
+  case Type_BF:
     return true;
   default:
     return false;

visa/Passes/AccSubstitution.cpp

@@ -460,13 +460,6 @@ bool AccSubPass::isAccCandidate(G4_INST *inst, int &lastUse, bool &mustBeAcc0,
     return false;
   }
 
-  if (builder.usesStack() && (dst->getTopDcl() == kernel.fg.getFramePtrDcl() ||
-                              dst->getTopDcl() == kernel.fg.getStackPtrDcl() ||
-                              dst->getTopDcl() == kernel.fg.getStackPtrDcl() ||
-                              dst->getTopDcl() == kernel.fg.pseudoVCEDcl)) {
-    return false;
-  }
-
   if (!IS_TYPE_FLOAT_FOR_ACC(dst->getType())) {
     isAllFloat = false;
   }