Improve handling of __FUNCTION__ and other predefined expression for Objective-C Blocks

Instead of always displaying the mangled name, try to do better
and get something closer to regular functions.

Recommit r287039 (that was reverted in r287039) with a tweak to
be more generic, and test fixes!

Differential Revision: https://reviews.llvm.org/D26522

llvm-svn: 287085

1 files changed, 87 insertions, 0 deletions

diff --git a/clang/test/CodeGen/block-with-perdefinedexpr.cpp b/clang/test/CodeGen/block-with-perdefinedexpr.cpp
new file mode 100644
index 00000000000..890c2d63585
--- /dev/null
+++ b/clang/test/CodeGen/block-with-perdefinedexpr.cpp
@@ -0,0 +1,87 @@
+// RUN: %clang_cc1 %s -emit-llvm -o - -fblocks -triple x86_64-apple-darwin10 -std=c++11 | FileCheck %s
+
+void bar() {
+  // CHECK-DAG: @__FUNCTION__.___Z3barv_block_invoke = private unnamed_addr constant [17 x i8] c"bar_block_invoke\00", align 1
+  const char * (^block1)() = ^() {
+    return __FUNCTION__;
+  };
+  // CHECK-DAG: @__FUNCTION__.___Z3barv_block_invoke_2 = private unnamed_addr constant [19 x i8] c"bar_block_invoke_2\00", align 1
+  const char * (^block2)() = ^() {
+    return __FUNCTION__;
+  };
+}
+
+void baz() {
+  // CHECK-DAG: @__PRETTY_FUNCTION__.___Z3bazv_block_invoke = private unnamed_addr constant [24 x i8] c"void baz()_block_invoke\00", align 1
+  const char * (^block1)() = ^() {
+    return __PRETTY_FUNCTION__;
+  };
+  // CHECK-DAG: @__PRETTY_FUNCTION__.___Z3bazv_block_invoke_2 = private unnamed_addr constant [26 x i8] c"void baz()_block_invoke_2\00", align 1
+  const char * (^block2)() = ^() {
+    return __PRETTY_FUNCTION__;
+  };
+}
+
+namespace foonamespace {
+class Foo {
+public:
+  Foo() {
+    // CHECK-DAG: @__PRETTY_FUNCTION__.___ZN12foonamespace3FooC2Ev_block_invoke = private unnamed_addr constant [38 x i8] c"foonamespace::Foo::Foo()_block_invoke\00", align 1
+    const char * (^block1)() = ^() {
+      return __PRETTY_FUNCTION__;
+    };
+    // CHECK-DAG: @__PRETTY_FUNCTION__.___ZN12foonamespace3FooC2Ev_block_invoke_2 = private unnamed_addr constant [40 x i8] c"foonamespace::Foo::Foo()_block_invoke_2\00", align 1
+    const char * (^block2)() = ^() {
+      return __PRETTY_FUNCTION__;
+    };
+    // CHECK-DAG: @__func__.___ZN12foonamespace3FooC2Ev_block_invoke_3 = private unnamed_addr constant [19 x i8] c"Foo_block_invoke_3\00", align 1
+    const char * (^block3)() = ^() {
+      return __func__;
+    };
+    bar();
+    inside_lambda();
+  }
+  ~Foo() {
+    // CHECK-DAG: @__func__.___ZN12foonamespace3FooD2Ev_block_invoke = private unnamed_addr constant [18 x i8] c"~Foo_block_invoke\00", align 1
+    const char * (^block1)() = ^() {
+      return __func__;
+    };
+    // CHECK-DAG: @__PRETTY_FUNCTION__.___ZN12foonamespace3FooD2Ev_block_invoke_2 = private unnamed_addr constant [41 x i8] c"foonamespace::Foo::~Foo()_block_invoke_2\00", align 1
+    const char * (^block2)() = ^() {
+      return __PRETTY_FUNCTION__;
+    };
+  }
+  void bar() {
+    // CHECK-DAG: @__PRETTY_FUNCTION__.___ZN12foonamespace3Foo3barEv_block_invoke = private unnamed_addr constant [43 x i8] c"void foonamespace::Foo::bar()_block_invoke\00", align 1
+    const char * (^block1)() = ^() {
+      return __PRETTY_FUNCTION__;
+    };
+    // CHECK-DAG: @__PRETTY_FUNCTION__.___ZN12foonamespace3Foo3barEv_block_invoke_2 = private unnamed_addr constant [45 x i8] c"void foonamespace::Foo::bar()_block_invoke_2\00", align 1
+    const char * (^block2)() = ^() {
+      return __PRETTY_FUNCTION__;
+    };
+    // CHECK-DAG: @__func__.___ZN12foonamespace3Foo3barEv_block_invoke_3 = private unnamed_addr constant [19 x i8] c"bar_block_invoke_3\00", align 1
+    const char * (^block3)() = ^() {
+      return __func__;
+    };
+  }
+  void inside_lambda() {
+    auto lambda = []() {
+      // CHECK-DAG: @__PRETTY_FUNCTION__.___ZZN12foonamespace3Foo13inside_lambdaEvENKUlvE_clEv_block_invoke = private unnamed_addr constant [92 x i8] c"auto foonamespace::Foo::inside_lambda()::(anonymous class)::operator()() const_block_invoke\00", align 1
+      const char * (^block1)() = ^() {
+        return __PRETTY_FUNCTION__;
+      };
+      // CHECK-DAG: 	  @__PRETTY_FUNCTION__.___ZZN12foonamespace3Foo13inside_lambdaEvENKUlvE_clEv_block_invoke_2 = private unnamed_addr constant [94 x i8] c"auto foonamespace::Foo::inside_lambda()::(anonymous class)::operator()() const_block_invoke_2\00", align 1
+      const char * (^block2)() = ^() {
+        return __PRETTY_FUNCTION__;
+      };
+      // CHECK-DAG: @__func__.___ZZN12foonamespace3Foo13inside_lambdaEvENKUlvE_clEv_block_invoke_3 = private unnamed_addr constant [26 x i8] c"operator()_block_invoke_3\00", align 1
+      const char * (^block3)() = ^() {
+        return __func__;
+      };
+    };
+    lambda();
+  }
+};
+Foo f;
+}