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middle-end/102683 - fix .DEFERRED_INIT expansion 

This avoids using an integer type for which we don't have an
approprate mode when expanding .DEFERRED_INIT to a non-memory
entity.

2021-10-11  Richard Biener  <rguenther@suse.de>

	PR middle-end/102683
	* internal-fn.c (expand_DEFERRED_INIT): Check for mode
	availability before building an integer type for storage
	purposes.
This commit is contained in:
Richard Biener 2021-10-11 14:31:59 +02:00
parent 09a0affdb0
commit 338725652f
1 changed files with 3 additions and 1 deletions
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4
gcc/internal-fn.c
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@ -3074,7 +3074,9 @@ expand_DEFERRED_INIT (internal_fn, gcall *stmt)
tree init;
if (tree_fits_uhwi_p (var_size)
&& (init_type == AUTO_INIT_PATTERN
|| !is_gimple_reg_type (var_type)))
|| !is_gimple_reg_type (var_type))
&& int_mode_for_size (tree_to_uhwi (var_size) * BITS_PER_UNIT,
0).exists ())
{
unsigned HOST_WIDE_INT total_bytes = tree_to_uhwi (var_size);
unsigned char *buf = (unsigned char *) xmalloc (total_bytes);