diff options
Diffstat (limited to 'gcc/emit-rtl.h')
| -rw-r--r-- | gcc/emit-rtl.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/gcc/emit-rtl.h b/gcc/emit-rtl.h index 2334dcc64e6..44ef034230f 100644 --- a/gcc/emit-rtl.h +++ b/gcc/emit-rtl.h @@ -119,4 +119,87 @@ get_max_uid (void) extern void set_decl_incoming_rtl (tree, rtx, bool); +/* Return a memory reference like MEMREF, but with its mode changed + to MODE and its address changed to ADDR. + (VOIDmode means don't change the mode. + NULL for ADDR means don't change the address.) */ +extern rtx change_address (rtx, machine_mode, rtx); + +/* Return a memory reference like MEMREF, but with its mode changed + to MODE and its address offset by OFFSET bytes. */ +#define adjust_address(MEMREF, MODE, OFFSET) \ + adjust_address_1 (MEMREF, MODE, OFFSET, 1, 1, 0, 0) + +/* Likewise, but the reference is not required to be valid. */ +#define adjust_address_nv(MEMREF, MODE, OFFSET) \ + adjust_address_1 (MEMREF, MODE, OFFSET, 0, 1, 0, 0) + +/* Return a memory reference like MEMREF, but with its mode changed + to MODE and its address offset by OFFSET bytes. Assume that it's + for a bitfield and conservatively drop the underlying object if we + cannot be sure to stay within its bounds. */ +#define adjust_bitfield_address(MEMREF, MODE, OFFSET) \ + adjust_address_1 (MEMREF, MODE, OFFSET, 1, 1, 1, 0) + +/* As for adjust_bitfield_address, but specify that the width of + BLKmode accesses is SIZE bytes. */ +#define adjust_bitfield_address_size(MEMREF, MODE, OFFSET, SIZE) \ + adjust_address_1 (MEMREF, MODE, OFFSET, 1, 1, 1, SIZE) + +/* Likewise, but the reference is not required to be valid. */ +#define adjust_bitfield_address_nv(MEMREF, MODE, OFFSET) \ + adjust_address_1 (MEMREF, MODE, OFFSET, 0, 1, 1, 0) + +/* Return a memory reference like MEMREF, but with its mode changed + to MODE and its address changed to ADDR, which is assumed to be + increased by OFFSET bytes from MEMREF. */ +#define adjust_automodify_address(MEMREF, MODE, ADDR, OFFSET) \ + adjust_automodify_address_1 (MEMREF, MODE, ADDR, OFFSET, 1) + +/* Likewise, but the reference is not required to be valid. */ +#define adjust_automodify_address_nv(MEMREF, MODE, ADDR, OFFSET) \ + adjust_automodify_address_1 (MEMREF, MODE, ADDR, OFFSET, 0) + +extern rtx adjust_address_1 (rtx, machine_mode, HOST_WIDE_INT, int, int, + int, HOST_WIDE_INT); +extern rtx adjust_automodify_address_1 (rtx, machine_mode, rtx, + HOST_WIDE_INT, int); + +/* Return a memory reference like MEMREF, but whose address is changed by + adding OFFSET, an RTX, to it. POW2 is the highest power of two factor + known to be in OFFSET (possibly 1). */ +extern rtx offset_address (rtx, rtx, unsigned HOST_WIDE_INT); + +/* Given REF, a MEM, and T, either the type of X or the expression + corresponding to REF, set the memory attributes. OBJECTP is nonzero + if we are making a new object of this type. */ +extern void set_mem_attributes (rtx, tree, int); + +/* Similar, except that BITPOS has not yet been applied to REF, so if + we alter MEM_OFFSET according to T then we should subtract BITPOS + expecting that it'll be added back in later. */ +extern void set_mem_attributes_minus_bitpos (rtx, tree, int, HOST_WIDE_INT); + +/* Return OFFSET if XEXP (MEM, 0) - OFFSET is known to be ALIGN + bits aligned for 0 <= OFFSET < ALIGN / BITS_PER_UNIT, or + -1 if not known. */ +extern int get_mem_align_offset (rtx, unsigned int); + +/* Return a memory reference like MEMREF, but with its mode widened to + MODE and adjusted by OFFSET. */ +extern rtx widen_memory_access (rtx, machine_mode, HOST_WIDE_INT); + +extern void store_bit_field (rtx, unsigned HOST_WIDE_INT, + unsigned HOST_WIDE_INT, + unsigned HOST_WIDE_INT, + unsigned HOST_WIDE_INT, + machine_mode, rtx); +extern rtx extract_bit_field (rtx, unsigned HOST_WIDE_INT, + unsigned HOST_WIDE_INT, int, rtx, + machine_mode, machine_mode); +extern rtx extract_low_bits (machine_mode, machine_mode, rtx); +extern rtx expand_mult (machine_mode, rtx, rtx, rtx, int); +extern rtx expand_mult_highpart_adjust (machine_mode, rtx, rtx, rtx, rtx, int); + + #endif /* GCC_EMIT_RTL_H */ |