nr2.0: Add new test cases.

gcc/testsuite/ChangeLog:

	* rust/compile/name_resolution13.rs: Add new module and remove compile
	step.
	* rust/compile/name_resolution14.rs: New test.
	* rust/compile/name_resolution15.rs: New test.
	* rust/compile/name_resolution16.rs: New test.
	* rust/compile/name_resolution17.rs: New test.
	* rust/compile/name_resolution18.rs: New test.
	* rust/compile/name_resolution19.rs: New test.
	* rust/compile/name_resolution20.rs: New test.
	* rust/compile/name_resolution21.rs: New test.

gcc/testsuite/rust/compile/name_resolution13.rs

@@ -1,4 +1,8 @@
-// { dg-additional-options "-frust-name-resolution-2.0 -frust-compile-until=lowering" }
+// { dg-options "-frust-name-resolution-2.0" }
+
+pub mod foo {
+    pub macro bar() {}
+}
 
 fn foo() {
     let b = 10;

gcc/testsuite/rust/compile/name_resolution14.rs

@@ -0,0 +1,15 @@
+// { dg-options "-frust-name-resolution-2.0" }
+
+pub mod foo {
+    pub macro bar() {}
+}
+
+use foo::biz; // { dg-error "unresolved import .foo::biz. .E0433." }
+
+use foo::{bar, baz, biz};
+// { dg-error "unresolved import .foo::baz. .E0433." "" { target *-*-* } .-1 }
+// { dg-error "unresolved import .foo::biz. .E0433." "" { target *-*-* } .-2 }
+
+fn main() {
+    bar!();
+}

gcc/testsuite/rust/compile/name_resolution15.rs

@@ -0,0 +1,20 @@
+// { dg-additional-options "-frust-name-resolution-2.0" }
+#![feature(decl_macro)]
+
+pub mod foo {
+    pub struct Foo {
+        pub a: i32,
+    }
+    pub fn Foo() {}
+    pub macro Foo() {{}}
+}
+
+pub use foo::Foo;
+
+use self::Foo as Fo;
+
+fn main() {
+    let _a = Fo();
+    let _b = Fo { a: 15 };
+    let _c = Fo!();
+}

gcc/testsuite/rust/compile/name_resolution16.rs

@@ -0,0 +1,18 @@
+// { dg-additional-options "-frust-name-resolution-2.0" }
+#![feature(decl_macro)]
+
+pub mod foo {
+    pub struct Foo {
+        pub a: i32,
+    }
+    pub fn Foo() {}
+    pub macro Foo() {{}}
+}
+
+pub use foo::Foo;
+
+fn main() {
+    let _a = Foo();
+    let _b = Foo { a: 15 };
+    let _c = Foo!();
+}

gcc/testsuite/rust/compile/name_resolution17.rs

@@ -0,0 +1,10 @@
+// { dg-options "-frust-name-resolution-2.0" }
+
+struct Foo;
+fn Foo() {} // { dg-error ".Foo. defined multiple times" }
+
+struct Marker;
+struct Bar {
+    a: Marker,
+}
+fn Bar() {} // ok, since `Bar` is not a value here

gcc/testsuite/rust/compile/name_resolution18.rs

@@ -0,0 +1,15 @@
+// { dg-options "-frust-name-resolution-2.0" }
+
+struct Marker;
+
+struct Foo {
+    a: Marker,
+}
+
+pub mod foo {
+    struct Foo {
+        b: Marker,
+    }
+}
+
+use foo::Foo; // { dg-error ".Foo. defined multiple times" }

gcc/testsuite/rust/compile/name_resolution19.rs

@@ -0,0 +1,20 @@
+struct Marker;
+
+fn foo(a: Marker, b: Marker) -> Marker {
+    let a = b;
+
+    a
+}
+
+fn bar() {
+    let a = 15;
+
+    fn inner() {
+        // inner functions cannot capture dynamic environment
+        let b = a; // { dg-error "cannot find value .a. in this scope" }
+    }
+}
+
+fn main() {
+    let m = foo(Marker, Marker);
+}

gcc/testsuite/rust/compile/name_resolution20.rs

@@ -0,0 +1,11 @@
+// { dg-options "-frust-name-resolution-2.0" }
+
+pub mod foo {
+    pub macro bar() {}
+}
+
+use foo::bar;
+
+fn main() {
+    bar!();
+}

gcc/testsuite/rust/compile/name_resolution21.rs

@@ -0,0 +1,12 @@
+// { dg-additional-options "-frust-name-resolution-2.0" }
+
+pub mod foo {
+    pub macro bar() {}
+}
+
+use foo::bar;
+use foo::bar; // { dg-error ".bar. defined multiple times" }
+
+fn main() {
+    bar!();
+}