Combine matchers for unit div and multiplcations

Simplfies our code for all operations and reusing original unit tests for overalpping matcher.

src/simplify_algebra.cpp

@@ -851,38 +851,26 @@ struct find_div_const
     }
 };
 
-struct find_unit_mult_const
+struct find_unit_ops
 {
     auto matcher() const
     {
-        return match::name("mul")(
+        auto mul_1 = match::name("mul")(
             match::either_arg(0, 1)(match::has_value(1.0f), match::any().bind("x")));
+        auto div_1 =
+            match::name("div")(match::args(match::any().bind("x"), match::has_value(1.0f)));
+        return match::any_of(mul_1, div_1);
     }
 
     void apply(module& m, const match::matcher_result& r) const
     {
         auto ins  = r.result;
-        auto args = ins->inputs();
-
         auto c_in = r.instructions["x"];
 
         m.replace_instruction(ins, c_in);
     }
 };
 
-struct find_unit_div_const
-{
-    auto matcher() const { return match::name("div")(match::arg(1)(match::has_value(1.0f))); }
-
-    void apply(module& m, const match::matcher_result& r) const
-    {
-        auto ins  = r.result;
-        auto args = ins->inputs();
-
-        m.replace_instruction(ins, args.front());
-    }
-};
-
 struct find_neg_unit_mult_const
 {
     auto matcher() const
@@ -1101,12 +1089,11 @@ void simplify_algebra::apply(module& m) const
                             find_mul_conv{},
                             find_mul_slice_conv{},
                             find_mul_add{},
-                            find_unit_div_const{},
+                            find_unit_ops{},
                             find_div_const{},
                             find_sub_const{},
                             find_rsqrt{},
                             find_neg_unit_mult_const{},
-                            find_unit_mult_const{},
                             find_concat_op{},
                             find_split_concat{},
                             find_splits{},