[PATCH] D29643: [analyzer] Do not duplicate call graph nodes for function that has definition and forward declaration.

[Aleksei Sidorin via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL295644: [analyzer] Do not duplicate call graph nodes for 
functions that have definition… (authored by a.sidorin).

Changed prior to commit:
  https://reviews.llvm.org/D29643?vs=87388&id=89089#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D29643

Files:
  cfe/trunk/include/clang/Analysis/CallGraph.h
  cfe/trunk/test/Analysis/debug-CallGraph.c


Index: cfe/trunk/include/clang/Analysis/CallGraph.h
===================================================================
--- cfe/trunk/include/clang/Analysis/CallGraph.h
+++ cfe/trunk/include/clang/Analysis/CallGraph.h
@@ -98,7 +98,7 @@
   bool VisitFunctionDecl(FunctionDecl *FD) {
     // We skip function template definitions, as their semantics is
     // only determined when they are instantiated.
-    if (includeInGraph(FD)) {
+    if (includeInGraph(FD) && FD->isThisDeclarationADefinition()) {
       // Add all blocks declared inside this function to the graph.
       addNodesForBlocks(FD);
       // If this function has external linkage, anything could call it.
Index: cfe/trunk/test/Analysis/debug-CallGraph.c
===================================================================
--- cfe/trunk/test/Analysis/debug-CallGraph.c
+++ cfe/trunk/test/Analysis/debug-CallGraph.c
@@ -43,8 +43,18 @@
 void eee() {}
 void fff() { eee(); }
 
+// This test case tests that forward declaration for the top-level function
+// does not affect call graph construction.
+void do_nothing() {}
+void test_single_call();
+void test_single_call() {
+  do_nothing();
+}
+
 // CHECK:--- Call graph Dump ---
-// CHECK-NEXT: {{Function: < root > calls: get5 add test_add mmm foo aaa < > 
bbb ccc ddd eee fff $}}
+// CHECK-NEXT: {{Function: < root > calls: get5 add test_add mmm foo aaa < > 
bbb ddd ccc eee fff do_nothing test_single_call $}}
+// CHECK-NEXT: {{Function: test_single_call calls: do_nothing $}}
+// CHECK-NEXT: {{Function: do_nothing calls: $}}
 // CHECK-NEXT: {{Function: fff calls: eee $}}
 // CHECK-NEXT: {{Function: eee calls: $}}
 // CHECK-NEXT: {{Function: ddd calls: ccc $}}



Index: cfe/trunk/include/clang/Analysis/CallGraph.h
===================================================================
--- cfe/trunk/include/clang/Analysis/CallGraph.h
+++ cfe/trunk/include/clang/Analysis/CallGraph.h
@@ -98,7 +98,7 @@
   bool VisitFunctionDecl(FunctionDecl *FD) {
     // We skip function template definitions, as their semantics is
     // only determined when they are instantiated.
-    if (includeInGraph(FD)) {
+    if (includeInGraph(FD) && FD->isThisDeclarationADefinition()) {
       // Add all blocks declared inside this function to the graph.
       addNodesForBlocks(FD);
       // If this function has external linkage, anything could call it.
Index: cfe/trunk/test/Analysis/debug-CallGraph.c
===================================================================
--- cfe/trunk/test/Analysis/debug-CallGraph.c
+++ cfe/trunk/test/Analysis/debug-CallGraph.c
@@ -43,8 +43,18 @@
 void eee() {}
 void fff() { eee(); }
 
+// This test case tests that forward declaration for the top-level function
+// does not affect call graph construction.
+void do_nothing() {}
+void test_single_call();
+void test_single_call() {
+  do_nothing();
+}
+
 // CHECK:--- Call graph Dump ---
-// CHECK-NEXT: {{Function: < root > calls: get5 add test_add mmm foo aaa < > bbb ccc ddd eee fff $}}
+// CHECK-NEXT: {{Function: < root > calls: get5 add test_add mmm foo aaa < > bbb ddd ccc eee fff do_nothing test_single_call $}}
+// CHECK-NEXT: {{Function: test_single_call calls: do_nothing $}}
+// CHECK-NEXT: {{Function: do_nothing calls: $}}
 // CHECK-NEXT: {{Function: fff calls: eee $}}
 // CHECK-NEXT: {{Function: eee calls: $}}
 // CHECK-NEXT: {{Function: ddd calls: ccc $}}

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