Handling expression decomposition and array bounds check hoisting: working code with lots of debugg…

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 117e6bfedeccb5866bc807e1c2c8c523ea708a3f..46a3672b94ed2ef74f67dd88b64ac0cc124c9539 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -634,6 +634,11 @@ HConstant* HGraph::GetConstantHole() {
 }
 
 
+HConstant* HGraph::GetInvalidContext() {
+  return GetConstantInt32(&constant_invalid_context_, 0xFFFFC0C7);
+}
+
+
 HGraphBuilder::IfBuilder::IfBuilder(HGraphBuilder* builder, BailoutId id)
     : builder_(builder),
       finished_(false),
@@ -3905,6 +3910,13 @@ void HGraph::SetupInformativeDefinitionsRecursively(HBasicBlock* block) {
   for (int i = 0; i < block->dominated_blocks()->length(); ++i) {
     SetupInformativeDefinitionsRecursively(block->dominated_blocks()->at(i));
   }
+
+  for (HInstruction* i = block->first(); i != NULL; i = i->next()) {
+    if (i->IsBoundsCheck()) {
+      HBoundsCheck* check = HBoundsCheck::cast(i);
+      check->ApplyIndexChange();
+    }
+  }
 }