diff options
Diffstat (limited to 'gcc/rtl.h')
| -rw-r--r-- | gcc/rtl.h | 20 |
1 files changed, 19 insertions, 1 deletions
@@ -2406,12 +2406,30 @@ extern int rtx_cost (rtx, machine_mode, enum rtx_code, int, bool); extern int address_cost (rtx, machine_mode, addr_space_t, bool); extern void get_full_rtx_cost (rtx, machine_mode, enum rtx_code, int, struct full_rtx_costs *); +extern bool native_encode_rtx (machine_mode, rtx, vec<target_unit> &, + unsigned int, unsigned int); +extern rtx native_decode_rtx (machine_mode, vec<target_unit>, + unsigned int); +extern rtx native_decode_vector_rtx (machine_mode, vec<target_unit>, + unsigned int, unsigned int, unsigned int); extern poly_uint64 subreg_lsb (const_rtx); -extern poly_uint64 subreg_lsb_1 (machine_mode, machine_mode, poly_uint64); +extern poly_uint64 subreg_size_lsb (poly_uint64, poly_uint64, poly_uint64); extern poly_uint64 subreg_size_offset_from_lsb (poly_uint64, poly_uint64, poly_uint64); extern bool read_modify_subreg_p (const_rtx); +/* Given a subreg's OUTER_MODE, INNER_MODE, and SUBREG_BYTE, return the + bit offset at which the subreg begins (counting from the least significant + bit of the operand). */ + +inline poly_uint64 +subreg_lsb_1 (machine_mode outer_mode, machine_mode inner_mode, + poly_uint64 subreg_byte) +{ + return subreg_size_lsb (GET_MODE_SIZE (outer_mode), + GET_MODE_SIZE (inner_mode), subreg_byte); +} + /* Return the subreg byte offset for a subreg whose outer mode is OUTER_MODE, whose inner mode is INNER_MODE, and where there are LSB_SHIFT *bits* between the lsb of the outer value and the lsb of |