Preserve error message during finally block in try..finally.

src/ia32/full-codegen-ia32.cc

Index: src/ia32/full-codegen-ia32.cc
diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc
index 9727ea01ec625886aa6a5833d602a65bc9dedbfb..2542b2d297d162ad2f252100e53bf4f8b44f33f1 100644
--- a/src/ia32/full-codegen-ia32.cc
+++ b/src/ia32/full-codegen-ia32.cc
@@ -4492,6 +4492,26 @@ void FullCodeGenerator::ExitFinallyBlock() {
 }
 
 
+void FullCodeGenerator::SavePendingMessage() {
+  ASSERT(!result_register().is(edx));
+  // Store pending message while executing finally block upon exception.
+  ExternalReference pending_message_obj =
+      ExternalReference::address_of_pending_message_obj(isolate());
+  __ mov(edx, Operand::StaticVariable(pending_message_obj));
+  __ push(edx);
+}
+
+
+void FullCodeGenerator::RestorePendingMessage() {
+  ASSERT(!result_register().is(edx));
+  // Restore pending message if cleared by executing the finally block.
+  __ pop(edx);
+  ExternalReference pending_message_obj =
+      ExternalReference::address_of_pending_message_obj(isolate());
+  __ mov(Operand::StaticVariable(pending_message_obj), edx);
+}
+
+
 #undef __
 
 #define __ ACCESS_MASM(masm())