diff options
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 45 |
1 files changed, 5 insertions, 40 deletions
@@ -2162,61 +2162,26 @@ move_block_to_reg (regno, x, nregs, mode) } /* Copy all or part of a BLKmode value X out of registers starting at REGNO. - The number of registers to be filled is NREGS. SIZE indicates the number - of bytes in the object X. */ + The number of registers to be filled is NREGS. */ void -move_block_from_reg (regno, x, nregs, size) +move_block_from_reg (regno, x, nregs) int regno; rtx x; int nregs; - int size; { int i; -#ifdef HAVE_store_multiple - rtx pat; - rtx last; -#endif - enum machine_mode mode; if (nregs == 0) return; - /* If SIZE is that of a mode no bigger than a word, just use that - mode's store operation. */ - if (size <= UNITS_PER_WORD - && (mode = mode_for_size (size * BITS_PER_UNIT, MODE_INT, 0)) != BLKmode) - { - emit_move_insn (adjust_address (x, mode, 0), gen_rtx_REG (mode, regno)); - return; - } - - /* Blocks smaller than a word on a BYTES_BIG_ENDIAN machine must be aligned - to the left before storing to memory. Note that the previous test - doesn't handle all cases (e.g. SIZE == 3). */ - if (size < UNITS_PER_WORD && BYTES_BIG_ENDIAN) - { - rtx tem = operand_subword (x, 0, 1, BLKmode); - rtx shift; - - if (tem == 0) - abort (); - - shift = expand_shift (LSHIFT_EXPR, word_mode, - gen_rtx_REG (word_mode, regno), - build_int_2 ((UNITS_PER_WORD - size) - * BITS_PER_UNIT, 0), NULL_RTX, 0); - emit_move_insn (tem, shift); - return; - } - /* See if the machine can do this with a store multiple insn. */ #ifdef HAVE_store_multiple if (HAVE_store_multiple) { - last = get_last_insn (); - pat = gen_store_multiple (x, gen_rtx_REG (word_mode, regno), - GEN_INT (nregs)); + rtx last = get_last_insn (); + rtx pat = gen_store_multiple (x, gen_rtx_REG (word_mode, regno), + GEN_INT (nregs)); if (pat) { emit_insn (pat); |