From 55bbda44b412f57f2bfa3f69c6ccaecc1acf3244 Mon Sep 17 00:00:00 2001
From: Rafael Stahl <r.stahl@tum.de>
Date: Tue, 23 Apr 2019 11:04:41 +0000
Subject: [analyzer][CrossTU] Extend CTU to VarDecls with initializer

Summary:
The existing CTU mechanism imports `FunctionDecl`s where the definition is available in another TU. This patch extends that to VarDecls, to bind more constants.

- Add VarDecl importing functionality to CrossTranslationUnitContext
- Import Decls while traversing them in AnalysisConsumer
- Add VarDecls to CTU external mappings generator
- Name changes from "external function map" to "external definition map"

Reviewers: NoQ, dcoughlin, xazax.hun, george.karpenkov, martong

Reviewed By: xazax.hun

Subscribers: Charusso, baloghadamsoftware, mikhail.ramalho, Szelethus, donat.nagy, dkrupp, george.karpenkov, mgorny, whisperity, szepet, rnkovacs, a.sidorin, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D46421

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@358968 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Analysis/func-mapping-test.cpp | 40 +++++++++++++++++++++++++++++++++++--
 1 file changed, 38 insertions(+), 2 deletions(-)

(limited to 'test/Analysis/func-mapping-test.cpp')

diff --git a/test/Analysis/func-mapping-test.cpp b/test/Analysis/func-mapping-test.cpp
index a5d7cfb449..f6eeb261da 100644
--- a/test/Analysis/func-mapping-test.cpp
+++ b/test/Analysis/func-mapping-test.cpp
@@ -1,7 +1,43 @@
-// RUN: %clang_extdef_map %s -- | FileCheck %s
+// RUN: %clang_extdef_map %s -- | FileCheck --implicit-check-not "c:@y" --implicit-check-not "c:@z" %s
 
 int f(int) {
   return 0;
 }
+// CHECK-DAG: c:@F@f#I#
 
-// CHECK: c:@F@f#I#
+extern const int x = 5;
+// CHECK-DAG: c:@x
+
+// Non-const variables should not be collected.
+int y = 5;
+
+// In C++, const implies internal linkage, so not collected.
+const int z = 5;
+
+struct S {
+  int a;
+};
+extern S const s = {.a = 2};
+// CHECK-DAG: c:@s
+
+struct SF {
+  const int a;
+};
+SF sf = {.a = 2};
+// CHECK-DAG: c:@sf
+
+struct SStatic {
+  static const int a = 4;
+};
+const int SStatic::a;
+// CHECK-DAG: c:@S@SStatic@a
+
+extern int const arr[5] = { 0, 1 };
+// CHECK-DAG: c:@arr
+
+union U {
+  const int a;
+  const unsigned int b;
+};
+U u = {.a = 6};
+// CHECK-DAG: c:@u
-- 
cgit v1.2.3