| // Copyright 2017 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_REGLIST_H_ |
| #define V8_REGLIST_H_ |
| |
| namespace v8 { |
| namespace internal { |
| |
| // Register configurations. |
| #if V8_TARGET_ARCH_ARM64 |
| typedef uint64_t RegList; |
| #else |
| typedef uint32_t RegList; |
| #endif |
| |
| // Get the number of registers in a given register list. |
| inline int NumRegs(RegList list) { return base::bits::CountPopulation(list); } |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_REGLIST_H_ |
