diff options
Diffstat (limited to 'gcc/machmode.h')
| -rw-r--r-- | gcc/machmode.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/gcc/machmode.h b/gcc/machmode.h index 6667458..f5e5baa 100644 --- a/gcc/machmode.h +++ b/gcc/machmode.h @@ -652,6 +652,39 @@ GET_MODE_2XWIDER_MODE (const T &m) extern const unsigned char mode_complex[NUM_MACHINE_MODES]; #define GET_MODE_COMPLEX_MODE(MODE) ((machine_mode) mode_complex[MODE]) +/* Represents a machine mode that must have a fixed size. The main + use of this class is to represent the modes of objects that always + have static storage duration, such as constant pool entries. + (No current target supports the concept of variable-size static data.) */ +class fixed_size_mode +{ +public: + typedef mode_traits<fixed_size_mode>::from_int from_int; + + ALWAYS_INLINE fixed_size_mode () {} + ALWAYS_INLINE fixed_size_mode (from_int m) : m_mode (machine_mode (m)) {} + ALWAYS_INLINE fixed_size_mode (const scalar_mode &m) : m_mode (m) {} + ALWAYS_INLINE fixed_size_mode (const scalar_int_mode &m) : m_mode (m) {} + ALWAYS_INLINE fixed_size_mode (const scalar_float_mode &m) : m_mode (m) {} + ALWAYS_INLINE fixed_size_mode (const scalar_mode_pod &m) : m_mode (m) {} + ALWAYS_INLINE fixed_size_mode (const scalar_int_mode_pod &m) : m_mode (m) {} + ALWAYS_INLINE fixed_size_mode (const complex_mode &m) : m_mode (m) {} + ALWAYS_INLINE operator machine_mode () const { return m_mode; } + + static bool includes_p (machine_mode); + +protected: + machine_mode m_mode; +}; + +/* Return true if MODE has a fixed size. */ + +inline bool +fixed_size_mode::includes_p (machine_mode) +{ + return true; +} + extern opt_machine_mode mode_for_size (unsigned int, enum mode_class, int); /* Return the machine mode to use for a MODE_INT of SIZE bits, if one |