Index: lib/CodeGen/CGExpr.cpp
===================================================================
--- lib/CodeGen/CGExpr.cpp
+++ lib/CodeGen/CGExpr.cpp
@@ -799,6 +799,10 @@
     if (E->getType()->isVariablyModifiedType())
       EmitVariablyModifiedType(E->getType());
 
+    if (isa<ExplicitCastExpr>(CE))
+      if (CGDebugInfo *DI = getDebugInfo())
+        DI->EmitExplicitCastType(E->getType());
+
     switch (CE->getCastKind()) {
     // Non-converting casts (but not C's implicit conversion from void*).
     case CK_BitCast:
Index: test/CodeGenCXX/debug-info-explicit-cast.cpp
===================================================================
--- test/CodeGenCXX/debug-info-explicit-cast.cpp
+++ test/CodeGenCXX/debug-info-explicit-cast.cpp
@@ -0,0 +1,18 @@
+// RUN: %clangxx -c -target x86_64-unknown-unknown -g %s -emit-llvm -S -o - | FileCheck %s
+struct Foo {
+  int a;
+  Foo() : a(1){};
+};
+
+struct Bar {
+  int b;
+  Bar() : b(2){};
+};
+
+int main() {
+  Bar *pb = new Bar;
+
+  return reinterpret_cast<Foo *>(pb)->a;
+}
+
+// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "Foo",