Emit mementos in crankshaft.

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 57190d75d8c5032e0dbce9008a5de2cd63f3da2d..0fb5370ec5355ce9fd2d1ef9d0ec18e441300b24 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -3875,8 +3875,13 @@ void LCodeGen::DoCallNew(LCallNew* instr) {
   ASSERT(ToRegister(instr->constructor()).is(edi));
   ASSERT(ToRegister(instr->result()).is(eax));
 
-  // No cell in ebx for construct type feedback in optimized code
-  __ mov(ebx, isolate()->factory()->undefined_value());
+  HAllocationMode* mode = instr->hydrogen()->allocation_mode();
+  bool create_mementos = mode->CreateAllocationMementos();
+  if (create_mementos) {
+    __ mov(ebx, mode->feedback_site());
+  } else {
+    __ mov(ebx, isolate()->factory()->undefined_value());
+  }
   CallConstructStub stub(isolate(), NO_CALL_CONSTRUCTOR_FLAGS);
   __ Move(eax, Immediate(instr->arity()));
   CallCode(stub.GetCode(), RelocInfo::CONSTRUCT_CALL, instr);
@@ -3889,10 +3894,17 @@ void LCodeGen::DoCallNewArray(LCallNewArray* instr) {
   ASSERT(ToRegister(instr->result()).is(eax));
 
   __ Move(eax, Immediate(instr->arity()));
-  __ mov(ebx, isolate()->factory()->undefined_value());
+  HAllocationMode* mode = instr->hydrogen()->allocation_mode();
+  bool create_mementos = mode->CreateAllocationMementos();
+  if (create_mementos) {
+    __ mov(ebx, mode->feedback_site());
+  } else {
+    __ mov(ebx, isolate()->factory()->undefined_value());
+  }
   ElementsKind kind = instr->hydrogen()->elements_kind();
   AllocationSiteOverrideMode override_mode =
-      (AllocationSite::GetMode(kind) == TRACK_ALLOCATION_SITE)
+      (!create_mementos &&
+       AllocationSite::GetMode(kind) == TRACK_ALLOCATION_SITE)
           ? DISABLE_ALLOCATION_SITES
           : DONT_OVERRIDE;