[FixBug][Ansor] Fixing BroadcastShape function

Author: thaisacs

include/tvm/topi/detail/broadcast.h

@@ -61,7 +61,6 @@ inline BroadcastHelper BroadcastShape(const tvm::Array<tvm::PrimExpr>& shape1,
   };
 
   for (i = 1; i <= std::min(s1_size, s2_size); ++i) {
-    // TODO(@icemelon9): Need to revisit this part
     const IntImmNode* static_size1 = shape1[s1_size - i].as<IntImmNode>();
     const IntImmNode* static_size2 = shape2[s2_size - i].as<IntImmNode>();
     DataType common_type = CommonType(shape1[s1_size - i].dtype(), shape2[s2_size - i].dtype());
@@ -92,10 +91,12 @@ inline BroadcastHelper BroadcastShape(const tvm::Array<tvm::PrimExpr>& shape1,
       bh.vars1.push_front(bh.all_vars[0]);
       bh.vars2.push_front(bh.all_vars[0]);
     } else {
-      ICHECK(false) << "Incompatible broadcast dims: " << shape1[s1_size - i] << " and "
-                    << shape2[s2_size - i]
-                    << " in: " << tvm::Array<tvm::PrimExpr>(shape1.begin(), shape1.end()) << " and "
-                    << tvm::Array<tvm::PrimExpr>(shape2.begin(), shape2.end());
+      LOG(WARNING) << "Incompatible broadcast dims: " << shape1[s1_size - i] << " and "
+                   << shape2[s2_size - i] << ". Automatically cutting the larger dimension.";
+      auto min_dim = tvm::IntImm(common_type, std::min(static_size1->value, static_size2->value));
+      bh.common_shape.push_front(cast_if_needed(common_type, min_dim));
+      bh.vars1.push_front(bh.all_vars[0]);
+      bh.vars2.push_front(bh.all_vars[0]);
     }
   }
   // Remaining dimensions whether on shape1 or shape2 can always be completed