Merged r19591, r19599 into 3.23 branch.

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 9d0dc9423e6cfb5253b9d5870d7cac135d0f07a4..ff6f1e6ef3d2a1db61e3304c807d2c7f7ef58ae0 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -5150,7 +5150,11 @@ void LCodeGen::DoAllocate(LAllocate* instr) {
 
   if (instr->size()->IsConstantOperand()) {
     int32_t size = ToInteger32(LConstantOperand::cast(instr->size()));
-    __ Allocate(size, result, temp, no_reg, deferred->entry(), flags);
+    if (size <= Page::kMaxRegularHeapObjectSize) {
+      __ Allocate(size, result, temp, no_reg, deferred->entry(), flags);
+    } else {
+      __ jmp(deferred->entry());
+    }
   } else {
     Register size = ToRegister(instr->size());
     __ Allocate(size, result, temp, no_reg, deferred->entry(), flags);