Update tests

test/libsolidity/syntaxTests/inlineAssembly/linkersymbol_function.sol

@@ -8,3 +8,4 @@ contract C {
   }
 }
 // ----
+// DeclarationError 5017: (63-90): The identifier "linkersymbol" is reserved and can not be used.

test/libsolidity/syntaxTests/inlineAssembly/reserved_identifiers.sol

@@ -0,0 +1,13 @@
+contract C {
+  function f() public pure {
+    assembly {
+      let linkersymbol := 1
+      let datacopy := 1
+      let swap16 := 1
+    }
+  }
+}
+// ----
+// DeclarationError 5017: (67-79): The identifier "linkersymbol" is reserved and can not be used.
+// DeclarationError 5017: (95-103): The identifier "datacopy" is reserved and can not be used.
+// DeclarationError 5017: (119-125): The identifier "swap16" is reserved and can not be used.

test/libsolidity/syntaxTests/inlineAssembly/reserved_identifiers_byzantium.sol

@@ -0,0 +1,16 @@
+contract C {
+  function f() public pure {
+    assembly {
+      let shl := 1
+    }
+    assembly {
+      pop(shl(1, 2))
+    }
+  }
+}
+// ====
+// EVMVersion: =byzantium
+// ----
+// DeclarationError 5017: (67-70): The identifier "shl" is reserved and can not be used.
+// TypeError 6612: (107-110): The "shl" instruction is only available for Constantinople-compatible VMs (you are currently compiling for "byzantium").
+// TypeError 3950: (107-116): Expected expression to evaluate to one value, but got 0 values instead.

test/libsolidity/syntaxTests/inlineAssembly/reserved_identifiers_constantinople.sol

@@ -0,0 +1,14 @@
+contract C {
+  function f() public pure {
+    assembly {
+      let shl := 1
+    }
+    assembly {
+      pop(shl(1, 2))
+    }
+  }
+}
+// ====
+// EVMVersion: >=constantinople
+// ----
+// ParserError 5568: (67-70): Cannot use builtin function name "shl" as identifier name.