MIPS64: Improve long branches utilizing code range.

src/globals.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_GLOBALS_H_
 #define V8_GLOBALS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 124 matching lines @@
 const int kPCOnStackSize = kRegisterSize;
 const int kFPOnStackSize = kRegisterSize;
 
 const int kDoubleSizeLog2 = 3;
 
 #if V8_HOST_ARCH_64_BIT
 const int kPointerSizeLog2 = 3;
 const intptr_t kIntptrSignBit = V8_INT64_C(0x8000000000000000);
 const uintptr_t kUintptrAllBitsSet = V8_UINT64_C(0xFFFFFFFFFFFFFFFF);
 const bool kRequiresCodeRange = true;
+#if V8_TARGET_ARCH_MIPS64

[jochen (gone - plz use gerrit), 2015/05/26 15:44:35]

can you explain why this is needed?

[dusmil.imgtec, 2015/05/26 16:16:34]

Done.

+const size_t kMaximalCodeRangeSize = 256 * MB;
+#else
 const size_t kMaximalCodeRangeSize = 512 * MB;
+#endif
 #if V8_OS_WIN
 const size_t kMinimumCodeRangeSize = 4 * MB;
 const size_t kReservedCodeRangePages = 1;
 #else
 const size_t kMinimumCodeRangeSize = 3 * MB;
 const size_t kReservedCodeRangePages = 0;
 #endif
 #else
 const int kPointerSizeLog2 = 2;
 const intptr_t kIntptrSignBit = 0x80000000;
@@ skipping 783 matching lines @@
 inline FunctionKind WithObjectLiteralBit(FunctionKind kind) {
   kind = static_cast<FunctionKind>(kind | FunctionKind::kInObjectLiteral);
   DCHECK(IsValidFunctionKind(kind));
   return kind;
 }
 } }  // namespace v8::internal
 
 namespace i = v8::internal;
 
 #endif  // V8_GLOBALS_H_