Add missing error codes in libsyntax-ext asm

src/test/ui/E0662.rs

@@ -0,0 +1,20 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// ignore-stage1
+
+#![feature(asm)]
+
+fn main() {
+    asm!("xor %eax, %eax"
+         :
+         : "=test"("a") //~ ERROR E0662
+        );
+}

src/test/ui/E0662.stderr

@@ -0,0 +1,9 @@
+error[E0662]: input operand constraint contains '='
+  --> $DIR/E0662.rs:18:12
+   |
+LL |          : "=test"("a") //~ ERROR E0662
+   |            ^^^^^^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0662`.

src/test/ui/E0663.rs

@@ -0,0 +1,20 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// ignore-stage1
+
+#![feature(asm)]
+
+fn main() {
+    asm!("xor %eax, %eax"
+         :
+         : "+test"("a") //~ ERROR E0663
+        );
+}

src/test/ui/E0663.stderr

@@ -0,0 +1,9 @@
+error[E0663]: input operand constraint contains '+'
+  --> $DIR/E0663.rs:18:12
+   |
+LL |          : "+test"("a") //~ ERROR E0663
+   |            ^^^^^^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0663`.

src/test/ui/E0664.rs

@@ -0,0 +1,21 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// ignore-stage1
+
+#![feature(asm)]
+
+fn main() {
+    asm!("mov $$0x200, %eax"
+         :
+         :
+         : "{eax}" //~ ERROR E0664
+        );
+}

src/test/ui/E0664.stderr

@@ -0,0 +1,9 @@
+error[E0664]: clobber should not be surrounded by braces
+  --> $DIR/E0664.rs:19:12
+   |
+LL |          : "{eax}" //~ ERROR E0664
+   |            ^^^^^^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0664`.