Fix condition for acc rule

Fix condition for acc rule

Author: pratikashar

visa/Passes/AccSubstitution.cpp

@@ -636,14 +636,12 @@ bool AccSubPass::replaceDstWithAcc(G4_INST* inst, int accNum)
         {
             // mul/mac can't have both sources be acc
             // Note that we only need to check for explicit mac here since we will not change mad to mac
-            if (!builder.relaxedACCRestrictions_1())
+            if (useInst->opcode() == G4_mul || useInst->opcode() == G4_mac)
             {
-                if (useInst->opcode() == G4_mul || useInst->opcode() == G4_mac)
+                if (useInst->getSrc(0)->isAccReg() || useInst->getSrc(1)->isAccReg() ||
+                    useInst->getSrc(0)->compareOperand(useInst->getSrc(1)) == G4_CmpRelation::Rel_eq)
                 {
-                    if (useInst->getSrc(0)->isAccReg() || useInst->getSrc(1)->isAccReg())
-                    {
-                        return false;
-                    }
+                    return false;
                 }
             }
         }