Pretenure call new support.

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 82824dd78a23c048b53c012ded3724bb2bddba0f..16c32949146ff60ad01df880ee22ebda4a41cb6b 100644
--- a/src/ia32/full-codegen-ia32.cc
+++ b/src/ia32/full-codegen-ia32.cc
@@ -2839,6 +2839,13 @@ void FullCodeGenerator::VisitCallNew(CallNew* expr) {
   Handle<Object> uninitialized =
       TypeFeedbackInfo::UninitializedSentinel(isolate());
   StoreFeedbackVectorSlot(expr->CallNewFeedbackSlot(), uninitialized);
+  if (FLAG_pretenuring_call_new) {
+    StoreFeedbackVectorSlot(expr->AllocationSiteFeedbackSlot(),
+                            isolate()->factory()->NewAllocationSite());
+    ASSERT(expr->AllocationSiteFeedbackSlot() ==
+           expr->CallNewFeedbackSlot() + 1);
+  }
+
   __ LoadHeapObject(ebx, FeedbackVector());
   __ mov(edx, Immediate(Smi::FromInt(expr->CallNewFeedbackSlot())));