Add comments to PrintActions1 and Driver::PrintActions.
Differential Revision: http://reviews.llvm.org/D10214
llvm-svn: 239537
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 8cca1de0..ec28987 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -814,9 +814,12 @@
return true;
}
+// Display an action graph human-readably. Action A is the "sink" node
+// and latest-occuring action. Traversal is in pre-order, visiting the
+// inputs to each action before printing the action itself.
static unsigned PrintActions1(const Compilation &C, Action *A,
std::map<Action*, unsigned> &Ids) {
- if (Ids.count(A))
+ if (Ids.count(A)) // A was already visited.
return Ids[A];
std::string str;
@@ -847,6 +850,8 @@
return Id;
}
+// Print the action graphs in a compilation C.
+// For example "clang -c file1.c file2.c" is composed of two subgraphs.
void Driver::PrintActions(const Compilation &C) const {
std::map<Action*, unsigned> Ids;
for (ActionList::const_iterator it = C.getActions().begin(),