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poly_int: expand_expr_real_1

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This patch makes the VIEW_CONVERT_EXPR handling in expand_expr_real_1
cope with polynomial type and mode sizes.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* expr.c (expand_expr_real_1): Use tree_to_poly_uint64
	instead of int_size_in_bytes when handling VIEW_CONVERT_EXPRs
	via stack temporaries.  Treat the mode size as polynomial too.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r256152
This commit is contained in:
Richard Sandiford 2018-01-03 07:17:52 +00:00 • committed by Richard Sandiford
parent 0fd03b44ab
commit f3ff49007a
2 changed files with 12 additions and 3 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2018-01-03 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
* expr.c (expand_expr_real_1): Use tree_to_poly_uint64
instead of int_size_in_bytes when handling VIEW_CONVERT_EXPRs
via stack temporaries. Treat the mode size as polynomial too.
2018-01-03 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>

7
gcc/expr.c
View file

@ -11132,9 +11132,10 @@ expand_expr_real_1 (tree exp, rtx target, machine_mode tmode,
else if (STRICT_ALIGNMENT)
{
tree inner_type = TREE_TYPE (treeop0);
HOST_WIDE_INT temp_size
= MAX (int_size_in_bytes (inner_type),
(HOST_WIDE_INT) GET_MODE_SIZE (mode));
poly_uint64 mode_size = GET_MODE_SIZE (mode);
poly_uint64 op0_size
= tree_to_poly_uint64 (TYPE_SIZE_UNIT (inner_type));
poly_int64 temp_size = upper_bound (op0_size, mode_size);
rtx new_rtx
= assign_stack_temp_for_type (mode, temp_size, type);
rtx new_with_op0_mode