diff options
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 21 |
1 files changed, 11 insertions, 10 deletions
@@ -198,7 +198,7 @@ enum insn_code clrstr_optab[NUM_MACHINE_MODES]; /* SLOW_UNALIGNED_ACCESS is non-zero if unaligned accesses are very slow. */ #ifndef SLOW_UNALIGNED_ACCESS -#define SLOW_UNALIGNED_ACCESS STRICT_ALIGNMENT +#define SLOW_UNALIGNED_ACCESS(MODE, ALIGN) STRICT_ALIGNMENT #endif /* This is run once per compilation to set up which modes can be used @@ -1435,7 +1435,7 @@ move_by_pieces (to, from, len, align) data.to_addr = copy_addr_to_reg (to_addr); } - if (! SLOW_UNALIGNED_ACCESS + if (! SLOW_UNALIGNED_ACCESS (word_mode, align) || align > MOVE_MAX || align >= BIGGEST_ALIGNMENT / BITS_PER_UNIT) align = MOVE_MAX; @@ -1477,7 +1477,7 @@ move_by_pieces_ninsns (l, align) register int n_insns = 0; int max_size = MOVE_MAX + 1; - if (! SLOW_UNALIGNED_ACCESS + if (! SLOW_UNALIGNED_ACCESS (word_mode, align) || align > MOVE_MAX || align >= BIGGEST_ALIGNMENT / BITS_PER_UNIT) align = MOVE_MAX; @@ -2283,7 +2283,7 @@ clear_by_pieces (to, len, align) data.to_addr = copy_addr_to_reg (to_addr); } - if (! SLOW_UNALIGNED_ACCESS + if (! SLOW_UNALIGNED_ACCESS (word_mode, align) || align > MOVE_MAX || align >= BIGGEST_ALIGNMENT / BITS_PER_UNIT) align = MOVE_MAX; @@ -2972,7 +2972,7 @@ emit_push_insn (x, mode, type, size, align, partial, reg, extra, /* Here we avoid the case of a structure whose weak alignment forces many pushes of a small amount of data, and such small pushes do rounding that causes trouble. */ - && ((! SLOW_UNALIGNED_ACCESS) + && ((! SLOW_UNALIGNED_ACCESS (word_mode, align)) || align >= BIGGEST_ALIGNMENT / BITS_PER_UNIT || PUSH_ROUNDING (align) == align) && PUSH_ROUNDING (INTVAL (size)) == INTVAL (size)) @@ -4770,10 +4770,10 @@ store_field (target, bitsize, bitpos, mode, exp, value_mode, || GET_CODE (target) == SUBREG /* If the field isn't aligned enough to store as an ordinary memref, store it as a bit field. */ - || (mode != BLKmode && SLOW_UNALIGNED_ACCESS + || (mode != BLKmode && SLOW_UNALIGNED_ACCESS (mode, align) && (align * BITS_PER_UNIT < GET_MODE_ALIGNMENT (mode) || bitpos % GET_MODE_ALIGNMENT (mode))) - || (mode == BLKmode && SLOW_UNALIGNED_ACCESS + || (mode == BLKmode && SLOW_UNALIGNED_ACCESS (mode, align) && (TYPE_ALIGN (TREE_TYPE (exp)) > align * BITS_PER_UNIT || bitpos % TYPE_ALIGN (TREE_TYPE (exp)) != 0)) /* If the RHS and field are a constant size and the size of the @@ -6749,14 +6749,15 @@ expand_expr (exp, target, tmode, modifier) && GET_MODE_CLASS (mode) != MODE_COMPLEX_FLOAT) /* If the field isn't aligned enough to fetch as a memref, fetch it as a bit field. */ - || (mode1 != BLKmode && SLOW_UNALIGNED_ACCESS + || (mode1 != BLKmode + && SLOW_UNALIGNED_ACCESS (mode1, alignment) && ((TYPE_ALIGN (TREE_TYPE (tem)) < (unsigned int) GET_MODE_ALIGNMENT (mode)) || (bitpos % GET_MODE_ALIGNMENT (mode) != 0))))) || (modifier != EXPAND_CONST_ADDRESS && modifier != EXPAND_INITIALIZER && mode == BLKmode - && SLOW_UNALIGNED_ACCESS + && SLOW_UNALIGNED_ACCESS (mode, alignment) && (TYPE_ALIGN (type) > alignment * BITS_PER_UNIT || bitpos % TYPE_ALIGN (type) != 0))) { @@ -8689,7 +8690,7 @@ expand_expr_unaligned (exp, palign) EXPAND_INITIALIZER), then we must not copy to a temporary. */ if (mode1 == VOIDmode || GET_CODE (op0) == REG || GET_CODE (op0) == SUBREG - || (SLOW_UNALIGNED_ACCESS + || (SLOW_UNALIGNED_ACCESS (mode1, alignment) && (TYPE_ALIGN (type) > alignment * BITS_PER_UNIT || bitpos % TYPE_ALIGN (type) != 0))) { |