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re PR c++/6212 (g++ testsuite EH regressions for irix6 -mabi=64)

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PR c++/6212
        * expr.c (highest_pow2_factor_for_type): New.
        (expand_assignment): Use it.

From-SVN: r53249
This commit is contained in:
Richard Henderson 2002-05-06 22:44:26 -07:00
parent 486e8c0cd3
commit 818c0c9493
2 changed files with 29 additions and 6 deletions
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16
gcc/ChangeLog
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@ -1,8 +1,14 @@
2002-05-06 Richard Henderson <rth@redhat.com>
PR c++/6212
* expr.c (highest_pow2_factor_for_type): New.
(expand_assignment): Use it.
2002-05-06 Aldy Hernandez <aldyh@redhat.com>
* config/rs6000/rs6000.md ("altivec_mtvscr"): Change to
unspec_volatile.
("altivec_mfvscr"): Same.
* config/rs6000/rs6000.md ("altivec_mtvscr"): Change to
unspec_volatile.
("altivec_mfvscr"): Same.
2002-05-06 Janis Johnson <janis187@us.ibm.com>
@ -26,7 +32,7 @@
PR opt/3995
* fold-const.c (sign_bit_p): New function.
(fold) [EQ_EXPR]: Use this to convert (A & C) == 0 into A >= 0 and
(A & C) != 0 into A < 0, when constant C is the sign bit of A's type.
(A & C) != 0 into A < 0, when constant C is the sign bit of A's type.
Reapply fold when converting (A & C) == C into (A & C) != 0.
(fold_binary_op_with_conditional_arg): Fix typo in comment.
@ -85,7 +91,7 @@ doc:
2002-05-06 Catherine Moore <clm@redhat.com>
* config/v850/v850.c (compute_register_save_size): Make sure
to count all of the registers that will be saved.
to count all of the registers that will be saved.
Mon May 6 18:03:11 CEST 2002 Jan Hubicka <jh@suse.cz>

19
gcc/expr.c
View file

@ -147,6 +147,7 @@ static rtx store_field PARAMS ((rtx, HOST_WIDE_INT,
int));
static rtx var_rtx PARAMS ((tree));
static HOST_WIDE_INT highest_pow2_factor PARAMS ((tree));
static HOST_WIDE_INT highest_pow2_factor_for_type PARAMS ((tree, tree));
static int is_aligning_offset PARAMS ((tree, tree));
static rtx expand_increment PARAMS ((tree, int, int));
static void do_jump_by_parts_greater PARAMS ((tree, int, rtx, rtx));
@ -3707,7 +3708,8 @@ expand_assignment (to, from, want_value, suggest_reg)
}
to_rtx = offset_address (to_rtx, offset_rtx,
highest_pow2_factor (offset));
highest_pow2_factor_for_type (TREE_TYPE (to),
offset));
}
if (GET_CODE (to_rtx) == MEM)
@ -5934,6 +5936,21 @@ highest_pow2_factor (exp)
return 1;
}
/* Similar, except that it is known that the expression must be a multiple
of the alignment of TYPE. */
static HOST_WIDE_INT
highest_pow2_factor_for_type (type, exp)
tree type;
tree exp;
{
HOST_WIDE_INT type_align, factor;
factor = highest_pow2_factor (exp);
type_align = TYPE_ALIGN (type) / BITS_PER_UNIT;
return MAX (factor, type_align);
}
/* Return an object on the placeholder list that matches EXP, a
PLACEHOLDER_EXPR. An object "matches" if it is of the type of the