ACC update

ACC option update

Author: bcheng0127

visa/G4_IR.cpp

@@ -7026,9 +7026,18 @@ 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:
-  case Type_BF:
+    if (getExecSize() != builder.getNativeExecSize()) {
+      switch (opcode()) {
+      case G4_addc:
+        return false;
+      default:
+        return true;
+      }
+    }
     return true;
   default:
     return false;

visa/Passes/AccSubstitution.cpp

@@ -460,6 +460,13 @@ 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;
   }