Node* JSGraph::EmptyFrameState() {
- if (cached_nodes_[kEmptyFrameState] == nullptr) {
- Node* values = graph()->NewNode(common()->StateValues(0));
- Node* state_node = graph()->NewNode(
+ Node* empty_frame_state = cached_nodes_[kEmptyFrameState];
+ if (!empty_frame_state || empty_frame_state->IsDead()) {
+ Node* state_values = graph()->NewNode(common()->StateValues(0));
+ empty_frame_state = graph()->NewNode(
common()->FrameState(JS_FRAME, BailoutId::None(),
OutputFrameStateCombine::Ignore()),
- values, values, values, NoContextConstant(), UndefinedConstant());
- cached_nodes_[kEmptyFrameState] = state_node;
+ state_values, state_values, state_values, NoContextConstant(),
+ UndefinedConstant());
+ cached_nodes_[kEmptyFrameState] = empty_frame_state;
}
- return cached_nodes_[kEmptyFrameState];
+ return empty_frame_state;
}
void JSGraph::GetCachedNodes(NodeVector* nodes) {
cache_.GetCachedNodes(nodes);
for (size_t i = 0; i < arraysize(cached_nodes_); i++) {
- if (cached_nodes_[i]) nodes->push_back(cached_nodes_[i]);
+ if (Node* node = cached_nodes_[i]) {
+ if (!node->IsDead()) nodes->push_back(node);
+ }
}
}
--- /dev/null
+// Copyright 2015 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.
+
+// Flags: --allow-natives-syntax --use-osr --turbo-osr --noalways-opt
+
+function foo() {
+ var c = 0;
+ for (var e = 0; e < 1; ++e) {
+ for (var a = 1; a > 0; a--) {
+ c += 1;
+ }
+ for (var b = 1; b > 0; b--) {
+ %OptimizeOsr();
+ }
+ }
+ return c;
+}
+try {
+ foo();
+} catch (e) {
+}