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re PR middle-end/52584 (Fails to constant fold vector upper/lower half BIT_FIELD_REFs)

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2012-03-14  Richard Guenther  <rguenther@suse.de>

	PR middle-end/52584
	* tree-vect-generic.c (type_for_widest_vector_mode): Take
	element type instead of mode, use build_vector_type_for_mode
	instead of the langhook, build a vector of proper signedness.
	(expand_vector_operations_1): Adjust.

From-SVN: r185385
This commit is contained in:
Richard Guenther 2012-03-14 14:55:11 +00:00 • committed by Richard Biener
parent 0ec2c2a943
commit 995ec13233
2 changed files with 14 additions and 13 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2012-03-14 Richard Guenther <rguenther@suse.de>
PR middle-end/52584
* tree-vect-generic.c (type_for_widest_vector_mode): Take
element type instead of mode, use build_vector_type_for_mode
instead of the langhook, build a vector of proper signedness.
(expand_vector_operations_1): Adjust.
2012-03-14 Richard Guenther <rguenther@suse.de>
PR middle-end/52582

19
gcc/tree-vect-generic.c
View file

@ -471,13 +471,13 @@ expand_vector_operation (gimple_stmt_iterator *gsi, tree type, tree compute_type
gimple_assign_rhs2 (assign), code);
}
/* Return a type for the widest vector mode whose components are of mode
INNER_MODE, or NULL_TREE if none is found.
SATP is true for saturating fixed-point types. */
/* Return a type for the widest vector mode whose components are of type
TYPE, or NULL_TREE if none is found. */
static tree
type_for_widest_vector_mode (enum machine_mode inner_mode, optab op, int satp)
type_for_widest_vector_mode (tree type, optab op)
{
enum machine_mode inner_mode = TYPE_MODE (type);
enum machine_mode best_mode = VOIDmode, mode;
int best_nunits = 0;
@ -503,13 +503,7 @@ type_for_widest_vector_mode (enum machine_mode inner_mode, optab op, int satp)
if (best_mode == VOIDmode)
return NULL_TREE;
else
{
/* For fixed-point modes, we need to pass satp as the 2nd parameter. */
if (ALL_FIXED_POINT_MODE_P (best_mode))
return lang_hooks.types.type_for_mode (best_mode, satp);
return lang_hooks.types.type_for_mode (best_mode, 1);
}
return build_vector_type_for_mode (type, best_mode);
}
@ -856,8 +850,7 @@ expand_vector_operations_1 (gimple_stmt_iterator *gsi)
if (!VECTOR_MODE_P (TYPE_MODE (type)) && op)
{
tree vector_compute_type
= type_for_widest_vector_mode (TYPE_MODE (TREE_TYPE (type)), op,
TYPE_SATURATING (TREE_TYPE (type)));
= type_for_widest_vector_mode (TREE_TYPE (type), op);
if (vector_compute_type != NULL_TREE
&& (TYPE_VECTOR_SUBPARTS (vector_compute_type)
< TYPE_VECTOR_SUBPARTS (compute_type))