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re PR tree-optimization/54976 (FAIL: gcc.dg/torture/pr47975.c (internal compiler error))

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2012-10-19  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/54976
	* tree-vect-stmts.c (get_vectype_for_scalar_type_and_size):
	Robustify against odd inner_mode inputs.

From-SVN: r192611
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Richard Biener 2012-10-19 10:32:29 +00:00 committed by Richard Biener
parent 57fc62cb32
commit dfc2e2acc9
2 changed files with 15 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-10-19 Richard Biener <rguenther@suse.de>
PR tree-optimization/54976
* tree-vect-stmts.c (get_vectype_for_scalar_type_and_size):
Robustify against odd inner_mode inputs.
2012-10-19 Zhenqiang Chen <zhenqiang.chen@linaro.org>
PR target/54892

13
gcc/tree-vect-stmts.c
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@ -6082,16 +6082,21 @@ get_vectype_for_scalar_type_and_size (tree scalar_type, unsigned size)
When the component mode passes the above test simply use a type
corresponding to that mode. The theory is that any use that
would cause problems with this will disable vectorization anyway. */
if (!SCALAR_FLOAT_TYPE_P (scalar_type)
&& !INTEGRAL_TYPE_P (scalar_type)
&& !POINTER_TYPE_P (scalar_type))
else if (!SCALAR_FLOAT_TYPE_P (scalar_type)
&& !INTEGRAL_TYPE_P (scalar_type)
&& !POINTER_TYPE_P (scalar_type))
scalar_type = lang_hooks.types.type_for_mode (inner_mode, 1);
/* We can't build a vector type of elements with alignment bigger than
their size. */
if (nbytes < TYPE_ALIGN_UNIT (scalar_type))
else if (nbytes < TYPE_ALIGN_UNIT (scalar_type))
scalar_type = lang_hooks.types.type_for_mode (inner_mode, 1);
/* If we felt back to using the mode fail if there was
no scalar type for it. */
if (scalar_type == NULL_TREE)
return NULL_TREE;
/* If no size was supplied use the mode the target prefers. Otherwise
lookup a vector mode of the specified size. */
if (size == 0)