[analyzer] Change -analyze-function to accept qualified names.

Both -analyze-function and -analyzer-display-progress now share the same
convention for naming functions, which allows discriminating between
methods with the same name in different classes, C++ overloads, and also
presents Objective-C instance and class methods in the convenient notation.

This also allows looking up the name for the particular function you're trying
to restrict analysis to in the -analyzer-display-progress output,
in case it was not instantly obvious.

Differential Revision: https://reviews.llvm.org/D22856

llvm-svn: 278018
diff --git a/clang/test/Analysis/analyzer-display-progress.cpp b/clang/test/Analysis/analyzer-display-progress.cpp
new file mode 100644
index 0000000..5d9f5e5
--- /dev/null
+++ b/clang/test/Analysis/analyzer-display-progress.cpp
@@ -0,0 +1,30 @@
+// RUN: %clang_cc1 -analyze -analyzer-display-progress %s 2>&1 | FileCheck %s
+
+void f() {};
+void g() {};
+void h() {}
+
+struct SomeStruct {
+  void f() {}
+};
+
+struct SomeOtherStruct {
+  void f() {}
+};
+
+namespace ns {
+  struct SomeStruct {
+    void f(int) {}
+    void f(float, ::SomeStruct) {}
+    void f(float, SomeStruct) {}
+  };
+}
+
+// CHECK: analyzer-display-progress.cpp f()
+// CHECK: analyzer-display-progress.cpp g()
+// CHECK: analyzer-display-progress.cpp h()
+// CHECK: analyzer-display-progress.cpp SomeStruct::f()
+// CHECK: analyzer-display-progress.cpp SomeOtherStruct::f()
+// CHECK: analyzer-display-progress.cpp ns::SomeStruct::f(int)
+// CHECK: analyzer-display-progress.cpp ns::SomeStruct::f(float, ::SomeStruct)
+// CHECK: analyzer-display-progress.cpp ns::SomeStruct::f(float, struct ns::SomeStruct)