MIPS[64]: Reland of `Fix unaligned arguments storage in Wasm-to-interpreter entry`

src/utils.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_UTILS_H_
 #define V8_UTILS_H_
 
 #include <limits.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 167 matching lines @@
 
 
 // Returns true if (addr + offset) is aligned.
 inline bool IsAddressAligned(Address addr,
                              intptr_t alignment,
                              int offset = 0) {
   intptr_t offs = OffsetFrom(addr + offset);
   return IsAligned(offs, alignment);
 }
 
+template <typename T, typename U>
+inline T RoundUpToMultipleOfPowOf2(T value, U multiple) {
+  DCHECK(multiple && ((multiple & (multiple - 1)) == 0));

[Clemens Hammacher, 2017/05/18 11:52:05]

There is base::bits::IsPowerOfTwo64.

[ivica.bogosavljevic, 2017/05/18 12:21:43]

Acknowledged.

+  return (value + multiple - 1) & ~(multiple - 1);
+}
 
 // Returns the maximum of the two parameters.
 template <typename T>
 T Max(T a, T b) {
   return a < b ? b : a;
 }
 
 
 // Returns the minimum of the two parameters.
 template <typename T>
@@ skipping 1514 matching lines @@
  private:
   T value_;
   ThreadedListZoneEntry<T>* next_;
   DISALLOW_COPY_AND_ASSIGN(ThreadedListZoneEntry);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_UTILS_H_