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re PR tree-optimization/79256 (FAIL: gcc.dg/vect/pr25413a.c execution test)

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2017-01-30  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/79256
	* targhooks.c (default_builtin_vector_alignment_reachable): Honor
	BIGGEST_FIELD_ALIGNMENT and ADJUST_FIELD_ALIGN to fix up bogus
	alignment on TYPE.
	* tree.c (build_aligned_type): Set TYPE_USER_ALIGN.

From-SVN: r245025
This commit is contained in:
Richard Biener 2017-01-30 13:52:44 +00:00 • committed by Richard Biener
parent 1dd9523917
commit fcc216ec44
3 changed files with 16 additions and 2 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2017-01-30 Richard Biener <rguenther@suse.de>
PR tree-optimization/79256
* targhooks.c (default_builtin_vector_alignment_reachable): Honor
BIGGEST_FIELD_ALIGNMENT and ADJUST_FIELD_ALIGN to fix up bogus
alignment on TYPE.
* tree.c (build_aligned_type): Set TYPE_USER_ALIGN.
2017-01-30 Dominik Vogt <vogt@linux.vnet.ibm.com>
PR target/79240

9
gcc/targhooks.c
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@ -1130,9 +1130,14 @@ default_vector_alignment (const_tree type)
/* By default assume vectors of element TYPE require a multiple of the natural
alignment of TYPE. TYPE is naturally aligned if IS_PACKED is false. */
bool
default_builtin_vector_alignment_reachable (const_tree /*type*/, bool is_packed)
default_builtin_vector_alignment_reachable (const_tree type, bool is_packed)
{
return ! is_packed;
if (is_packed)
return false;
/* If TYPE can be differently aligned in field context we have to punt
as TYPE may have wrong TYPE_ALIGN here (PR79278). */
return min_align_of_type (CONST_CAST_TREE (type)) == TYPE_ALIGN_UNIT (type);
}
/* By default, assume that a target supports any factor of misalignment

1
gcc/tree.c
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@ -6684,6 +6684,7 @@ build_aligned_type (tree type, unsigned int align)
t = build_variant_type_copy (type);
SET_TYPE_ALIGN (t, align);
TYPE_USER_ALIGN (t) = 1;
return t;
}