64 constexpr struct V8_ALIGNED(16) {  struct
65   uint32_t a;
66   uint32_t b;
67   uint32_t c;
68   uint32_t d;
71 constexpr struct V8_ALIGNED(16) {  struct
72   uint32_t a;
73   uint32_t b;
74   uint32_t c;
75   uint32_t d;
78 constexpr struct V8_ALIGNED(16) {  struct
79   uint64_t a;
80   uint64_t b;
84 constexpr struct V8_ALIGNED(16) {  struct
85   uint64_t a;
86   uint64_t b;