Merge V8 5.2.361.47  DO NOT MERGE

https://chromium.googlesource.com/v8/v8/+/5.2.361.47

FPIIM-449

Change-Id: Ibec421b85a9b88cb3a432ada642e469fe7e78346
(cherry picked from commit bcf72ee8e3b26f1d0726869c7ddb3921c68b09a8)
diff --git a/src/compiler/gap-resolver.cc b/src/compiler/gap-resolver.cc
index 35e91fa..9403d35 100644
--- a/src/compiler/gap-resolver.cc
+++ b/src/compiler/gap-resolver.cc
@@ -94,7 +94,7 @@
 
   DCHECK((*blocker)->IsPending());
   // Ensure source is a register or both are stack slots, to limit swap cases.
-  if (source.IsStackSlot() || source.IsDoubleStackSlot()) {
+  if (source.IsStackSlot() || source.IsFPStackSlot()) {
     std::swap(source, destination);
   }
   assembler_->AssembleSwap(&source, &destination);