Debugger: prepare code for debugging on a per-function basis.

src/compiler/js-inlining.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/js-inlining.h"
 
 #include "src/ast.h"
 #include "src/ast-numbering.h"
 #include "src/compiler/all-nodes.h"
 #include "src/compiler/ast-graph-builder.h"
@@ skipping 231 matching lines @@
   HeapObjectMatcher match(call.jsfunction());
   if (!match.HasValue()) return NoChange();
 
   if (!match.Value().handle()->IsJSFunction()) return NoChange();
   Handle<JSFunction> function =
       Handle<JSFunction>::cast(match.Value().handle());
   if (mode_ == kRestrictedInlining && !function->shared()->force_inline()) {
     return NoChange();
   }
 
+  if (function->shared()->HasDebugInfo()) {
+    // Function contains break points.
+    return NoChange();

[Michael Starzinger, 2015/07/20 11:29:40]

Please add a tracing line ...

TRACE("Not inlining %s into %s because callee contains breakpoints\n", ...)

[Yang, 2015/07/20 12:13:47]

Done.

+  }
+
   // Disallow cross native-context inlining for now. This means that all parts
   // of the resulting code will operate on the same global object.
   // This also prevents cross context leaks for asm.js code, where we could
   // inline functions from a different context and hold on to that context (and
   // closure) from the code object.
   // TODO(turbofan): We might want to revisit this restriction later when we
   // have a need for this, and we know how to model different native contexts
   // in the same graph in a compositional way.
   if (function->context()->native_context() !=
       info_->context()->native_context()) {
@@ skipping 74 matching lines @@
 
   // Remember that we inlined this function.
   info_->AddInlinedFunction(info.shared_info());
 
   return InlineCall(node, context, frame_state, start, end);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8