Reviewers: haitao.feng,

Description:
Revert "Rename kIs64BitArch with kRequiresCodeRange."

[email protected]

Please review this at https://codereview.chromium.org/325343003/

SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge

Affected files (+9, -14 lines):
  M src/api.cc
  M src/globals.h
  M src/spaces.cc


Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 6e76d9ac0586adca5246de9afd5df1cdad3591b1..cc9cd3ae9f60820190948cf403fda7f349a9d9cb 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -465,12 +465,11 @@ void ResourceConstraints::ConfigureDefaults(uint64_t physical_memory,

   set_max_available_threads(i::Max(i::Min(number_of_processors, 4u), 1u));

-  if (virtual_memory_limit > 0 && i::kRequiresCodeRange) {
+  if (virtual_memory_limit > 0 && i::kIs64BitArch) {
// Reserve no more than 1/8 of the memory for the code range, but at most
-    // kMaximalCodeRangeSize.
+    // 512 MB.
     set_code_range_size(
-        i::Min(i::kMaximalCodeRangeSize / i::MB,
-               static_cast<int>((virtual_memory_limit >> 3) / i::MB)));
+ i::Min(512, static_cast<int>((virtual_memory_limit >> 3) / i::MB)));
   }
 }

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index f3f0788fc5cf7d0b1663969f0bcc7db516bf383a..0c24c6e59dea386a4fbbd82f1fccf6315e0d69a4 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -153,14 +153,12 @@ const int kDoubleSizeLog2 = 3;
 const int kPointerSizeLog2 = 3;
 const intptr_t kIntptrSignBit = V8_INT64_C(0x8000000000000000);
 const uintptr_t kUintptrAllBitsSet = V8_UINT64_C(0xFFFFFFFFFFFFFFFF);
-const bool kRequiresCodeRange = true;
-const int kMaximalCodeRangeSize = 512 * MB;
+const bool kIs64BitArch = true;
 #else
 const int kPointerSizeLog2 = 2;
 const intptr_t kIntptrSignBit = 0x80000000;
 const uintptr_t kUintptrAllBitsSet = 0xFFFFFFFFu;
-const bool kRequiresCodeRange = false;
-const int kMaximalCodeRangeSize = 0 * MB;
+const bool kIs64BitArch = false;
 #endif

 const int kBitsPerByte = 8;
Index: src/spaces.cc
diff --git a/src/spaces.cc b/src/spaces.cc
index 9d2152970881694e46f0d5f6eecbef971f3894a8..7966a04728c6291e83142eeeda1acf2039c68c77 100644
--- a/src/spaces.cc
+++ b/src/spaces.cc
@@ -115,17 +115,15 @@ bool CodeRange::SetUp(size_t requested) {
   ASSERT(code_range_ == NULL);

   if (requested == 0) {
- // When a target requires the code range feature, we put all code objects
-    // in a kMaximalCodeRangeSize range of virtual address space, so that
-    // they can call each other with near calls.
-    if (kRequiresCodeRange) {
-      requested = kMaximalCodeRangeSize;
+    // On 64-bit platform(s), we put all code objects in a 512 MB range of
+ // virtual address space, so that they can call each other with near calls.
+    if (kIs64BitArch) {
+      requested = 512 * MB;
     } else {
       return true;
     }
   }

-  ASSERT(requested <= kMaximalCodeRangeSize);
   code_range_ = new VirtualMemory(requested);
   CHECK(code_range_ != NULL);
   if (!code_range_->IsReserved()) {


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