Patch CEntry stub to swallow exception if liveedit/restart frame needs it.

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index 171112fa7d37a37d01a2a22aa2e41ac1322985d1..3fdea902d853644a73d2277a2b53ec37f3fd75ce 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -3727,6 +3727,24 @@ void CEntryStub::Generate(MacroAssembler* masm) {
   __ ThrowUncatchable(rax);
 
   __ bind(&throw_normal_exception);
+
+#ifdef ENABLE_DEBUGGER_SUPPORT
+  Label proceed_throwing;
+  ExternalReference c_entry_frame_to_ignore_exception =
+      ExternalReference(Debug_Address::CEntryFrameToIgnoreException(),
+          masm->isolate());
+  Operand c_entry_frame_to_ignore_exception_operand =
+      masm->ExternalOperand(c_entry_frame_to_ignore_exception);
+
+  __ cmpq(rbp, c_entry_frame_to_ignore_exception_operand);
+  __ j(not_equal, &proceed_throwing);
+  __ Set(c_entry_frame_to_ignore_exception_operand, 0);
+  __ LeaveExitFrame(save_doubles_);
+  __ ret(0);
+
+  __ bind(&proceed_throwing);
+#endif  // ENABLE_DEBUGGER_SUPPORT
+
   __ Throw(rax);
 }