Rework our handling of key functions. We used to track a complete list of all

dynamic classes in the translation unit and check whether each one's key
function is defined when we got to the end of the TU (and when we got to the
end of each module). This is really terrible for modules performance, since it
causes unnecessary deserialization of every dynamic class in every compilation.

We now use a much simpler (and, in a modules build, vastly more efficient)
system: when we see an out-of-line definition of a virtual function, we check
whether that function was in fact its class's key function. (If so, we need to
emit the vtable.)

llvm-svn: 230830

1 files changed, 3 insertions, 3 deletions

diff --git a/clang/test/CodeGenCXX/cxx11-vtable-key-function.cpp b/clang/test/CodeGenCXX/cxx11-vtable-key-function.cpp
index cd2ab59506d..a4a00026487 100644
--- a/clang/test/CodeGenCXX/cxx11-vtable-key-function.cpp
+++ b/clang/test/CodeGenCXX/cxx11-vtable-key-function.cpp
@@ -10,7 +10,7 @@ struct X {
 X::~X() = default;
 
 // Verify that the vtable is emitted.
-// CHECK: @_ZTVN5Test11XE = unnamed_addr constant
+// CHECK-DAG: @_ZTVN5Test11XE = unnamed_addr constant
 }
 
 namespace Test2 {
@@ -22,7 +22,7 @@ struct X {
 void X::f() {}
 
 // Verify that the vtable is emitted.
-// CHECK: @_ZTVN5Test21XE = unnamed_addr constant
+// CHECK-DAG: @_ZTVN5Test21XE = unnamed_addr constant
 }
 
 namespace Test3 {
@@ -34,5 +34,5 @@ struct X {
 void X::f() {}
 
 // Verify that the vtable is emitted.
-// CHECK: @_ZTVN5Test31XE = unnamed_addr constant
+// CHECK-DAG: @_ZTVN5Test31XE = unnamed_addr constant
 }