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re PR target/91615 ([armeb] ICEs since r274986)

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2019-09-05  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR middle-end/91615
        * expr.c (expand_expr_real_1): Handle misaligned TARGET_MEM_REF
        without movmisalign optab.

From-SVN: r275409
This commit is contained in:
Bernd Edlinger 2019-09-05 13:40:17 +00:00 committed by Bernd Edlinger
parent 728347922a
commit 55e8f926f2
2 changed files with 25 additions and 14 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2019-09-05 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR middle-end/91615
* expr.c (expand_expr_real_1): Handle misaligned TARGET_MEM_REF
without movmisalign optab.
2019-09-05 Jakub Jelinek <jakub@redhat.com>
PR middle-end/91001

33
gcc/expr.c
View File

@ -10313,7 +10313,6 @@ expand_expr_real_1 (tree exp, rtx target, machine_mode tmode,
{
addr_space_t as
= TYPE_ADDR_SPACE (TREE_TYPE (TREE_TYPE (TREE_OPERAND (exp, 0))));
enum insn_code icode;
unsigned int align;
op0 = addr_for_mem_ref (exp, as, true);
@ -10325,21 +10324,27 @@ expand_expr_real_1 (tree exp, rtx target, machine_mode tmode,
if (modifier != EXPAND_WRITE
&& modifier != EXPAND_MEMORY
&& mode != BLKmode
&& align < GET_MODE_ALIGNMENT (mode)
/* If the target does not have special handling for unaligned
loads of mode then it can use regular moves for them. */
&& ((icode = optab_handler (movmisalign_optab, mode))
!= CODE_FOR_nothing))
&& align < GET_MODE_ALIGNMENT (mode))
{
class expand_operand ops[2];
enum insn_code icode;
/* We've already validated the memory, and we're creating a
new pseudo destination. The predicates really can't fail,
nor can the generator. */
create_output_operand (&ops[0], NULL_RTX, mode);
create_fixed_operand (&ops[1], temp);
expand_insn (icode, 2, ops);
temp = ops[0].value;
if ((icode = optab_handler (movmisalign_optab, mode))
!= CODE_FOR_nothing)
{
class expand_operand ops[2];
/* We've already validated the memory, and we're creating a
new pseudo destination. The predicates really can't fail,
nor can the generator. */
create_output_operand (&ops[0], NULL_RTX, mode);
create_fixed_operand (&ops[1], temp);
expand_insn (icode, 2, ops);
temp = ops[0].value;
}
else if (targetm.slow_unaligned_access (mode, align))
temp = extract_bit_field (temp, GET_MODE_BITSIZE (mode),
0, unsignedp, NULL_RTX,
mode, mode, false, NULL);
}
return temp;
}