Rollback of r17108, r17106, r17104 in trunk branch.

src/spaces.cc

Index: src/spaces.cc
diff --git a/src/spaces.cc b/src/spaces.cc
index b7fa32d4d6bc1fb033b00ffdf481972a8bc23d73..10dd774c637a7a00ad287266f3986f17d09630a0 100644
--- a/src/spaces.cc
+++ b/src/spaces.cc
@@ -1056,7 +1056,7 @@ intptr_t PagedSpace::SizeOfFirstPage() {
   int size = 0;
   switch (identity()) {
     case OLD_POINTER_SPACE:
-      size = 72 * kPointerSize * KB;
+      size = 64 * kPointerSize * KB;
       break;
     case OLD_DATA_SPACE:
       size = 192 * KB;
@@ -1077,14 +1077,7 @@ intptr_t PagedSpace::SizeOfFirstPage() {
         // upgraded to handle small pages.
         size = AreaSize();
       } else {
-#if V8_TARGET_ARCH_MIPS
-        // On MIPS, code stubs seem to be quite a bit larger.
-        // TODO(olivf/MIPS folks): Can we do anything about this? Does it
-        // indicate the presence of a bug?
-        size = 464 * KB;
-#else
         size = 416 * KB;
-#endif
       }
       break;
     default: