Fix intermittent stack overflow in Hydrogen code generation in tests.

Review URL: https://chromiumcodereview.appspot.com/9290044

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10511 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/hydrogen.cc

@@ -4798,7 +4798,8 @@ bool HGraphBuilder::TryInline(Call* expr, bool drop_extra) {
 
   // Do a quick check on source code length to avoid parsing large
   // inlining candidates.
-  if (FLAG_limit_inlining && target->shared()->SourceSize() > kMaxSourceSize) {
+  if ((FLAG_limit_inlining && target->shared()->SourceSize() > kMaxSourceSize)
+      || target->shared()->SourceSize() > kUnlimitedMaxSourceSize) {
     TraceInline(target, caller, "target text too big");
     return false;
   }
@@ -4846,7 +4847,8 @@ bool HGraphBuilder::TryInline(Call* expr, bool drop_extra) {
   }
 
   // We don't want to add more than a certain number of nodes from inlining.
-  if (FLAG_limit_inlining && inlined_count_ > kMaxInlinedNodes) {
+  if ((FLAG_limit_inlining && inlined_count_ > kMaxInlinedNodes) ||
+      inlined_count_ > kUnlimitedMaxInlinedNodes) {
     TraceInline(target, caller, "cumulative AST node limit reached");
     return false;
   }
@@ -4874,7 +4876,8 @@ bool HGraphBuilder::TryInline(Call* expr, bool drop_extra) {
 
   // Count the number of AST nodes added by inlining this call.
   int nodes_added = AstNode::Count() - count_before;
-  if (FLAG_limit_inlining && nodes_added > kMaxInlinedSize) {
+  if ((FLAG_limit_inlining && nodes_added > kMaxInlinedSize) ||
+      nodes_added > kUnlimitedMaxInlinedSize) {
     TraceInline(target, caller, "target AST is too large");
     return false;
   }

src/hydrogen.h

@@ -773,6 +773,12 @@ class HGraphBuilder: public AstVisitor {
   static const int kMaxInlinedSize = 196;
   static const int kMaxSourceSize = 600;
 
+  // Even in the 'unlimited' case we have to have some limit in order not to
+  // overflow the stack.
+  static const int kUnlimitedMaxInlinedNodes = 1000;
+  static const int kUnlimitedMaxInlinedSize = 1000;
+  static const int kUnlimitedMaxSourceSize = 600;
+
   // Simple accessors.
   void set_function_state(FunctionState* state) { function_state_ = state; }