[Relax][FRONTEND][Pytorch] Add fmod support (#17893)

* Add fmod support

* Fix lint issue

Author: kavin-sai-krishna

python/tvm/relax/frontend/torch/base_fx_graph_translator.py

@@ -409,6 +409,20 @@ def call_binary_op(op, lhs, rhs):
 
         return convert
 
+    def _fmod(self, node: fx.Node):
+        args = self.retrieve_args(node)
+        lhs = args[0]
+        rhs = args[1]
+        if isinstance(lhs, relax.Expr) and isinstance(rhs, relax.Expr):
+            return self.block_builder.emit(relax.op.mod(lhs, rhs))
+        elif isinstance(lhs, relax.Expr):
+            rhs = relax.const(rhs, lhs.struct_info.dtype)
+        elif isinstance(rhs, relax.Expr):
+            lhs = relax.const(lhs, rhs.struct_info.dtype)
+        else:
+            assert False
+        return self.block_builder.emit(relax.op.mod(lhs, rhs))
+
     def _rsub(self, node: fx.Node) -> relax.Var:
         args = self.retrieve_args(node)
         lhs = args[0]

python/tvm/relax/frontend/torch/exported_program_translator.py

@@ -345,6 +345,8 @@ def create_convert_map(
             "eq.Scalar": self._binary_op(relax.op.equal, operator.eq),
             "eq.Tensor": self._binary_op(relax.op.equal, operator.eq),
             "floor_divide.default": self._binary_op(relax.op.floor_divide, operator.floordiv),
+            "fmod.Scalar": self._fmod,
+            "fmod.Tensor": self._fmod,
             "logaddexp.default": self._binary_op(relax.op.log_add_exp, torch.logaddexp),
             "ge.Scalar": self._binary_op(relax.op.greater_equal, operator.ge),
             "ge.Tensor": self._binary_op(relax.op.greater_equal, operator.ge),

python/tvm/relax/frontend/torch/fx_translator.py

@@ -732,6 +732,7 @@ def create_convert_map(
             "bitwise_or": self._binary_op(relax.op.bitwise_or, operator.or_),
             "eq": self._binary_op(relax.op.equal, operator.eq),
             "floordiv": self._binary_op(relax.op.floor_divide, operator.floordiv),
+            "fmod": self._fmod,
             "ge": self._binary_op(relax.op.greater_equal, operator.ge),
             "gt": self._binary_op(relax.op.greater, operator.gt),
             "iadd": self._binary_op(relax.op.add, operator.add),

tests/python/relax/test_frontend_from_exported_program.py

@@ -852,6 +852,7 @@ def main(
     (torch.ops.aten.mul_, R.multiply),
     (operator.truediv, R.divide),
     (operator.floordiv, R.floor_divide),
+    (torch.ops.aten.fmod, R.mod),
     (operator.pow, R.power),
     (operator.mod, R.floor_mod),
     (operator.and_, R.bitwise_and),

tests/python/relax/test_frontend_from_fx.py

@@ -1653,6 +1653,7 @@ def main(
     (operator.mul, R.multiply),
     (operator.truediv, R.divide),
     (operator.floordiv, R.floor_divide),
+    (torch.ops.aten.fmod, R.mod),
     (operator.pow, R.power),
     (operator.mod, R.floor_mod),
 ]