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Tweak comment further.

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From-SVN: r233567
This commit is contained in:
Jakub Jelinek 2016-02-19 20:13:20 +01:00
parent 4b6c824a58
commit c464c0db19
1 changed files with 3 additions and 1 deletions
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gcc/expr.c
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@ -6649,7 +6649,9 @@ store_field (rtx target, HOST_WIDE_INT bitsize, HOST_WIDE_INT bitpos,
includes some extra padding. store_expr / expand_expr will in
that case call get_inner_reference that will have the bitsize
we check here and thus the block move will not clobber the
padding that shouldn't be clobbered. */
padding that shouldn't be clobbered. In the future we could
replace the TREE_ADDRESSABLE check with a check that
get_base_address needs to live in memory. */
&& (!TREE_ADDRESSABLE (TREE_TYPE (exp))
|| TREE_CODE (exp) != COMPONENT_REF
|| TREE_CODE (DECL_SIZE (TREE_OPERAND (exp, 1))) != INTEGER_CST