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* expr.c (safe_from_p): Allow Chill-style variable-sized arrays.

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From-SVN: r12213
This commit is contained in:
Per Bothner 1996-06-07 12:11:44 -07:00
parent 03cad97d1e
commit 8f6562d026
1 changed files with 7 additions and 2 deletions
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9
gcc/expr.c
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@ -4466,12 +4466,17 @@ safe_from_p (x, exp)
if (x == 0
/* If EXP has varying size, we MUST use a target since we currently
have no way of allocating temporaries of variable size. So we
assume here that something at a higher level has prevented a
have no way of allocating temporaries of variable size
(except for arrays that have TYPE_ARRAY_MAX_SIZE set).
So we assume here that something at a higher level has prevented a
clash. This is somewhat bogus, but the best we can do. Only
do this when X is BLKmode. */
|| (TREE_TYPE (exp) != 0 && TYPE_SIZE (TREE_TYPE (exp)) != 0
&& TREE_CODE (TYPE_SIZE (TREE_TYPE (exp))) != INTEGER_CST
&& (TREE_CODE (TREE_TYPE (exp)) != ARRAY_TYPE
|| TYPE_ARRAY_MAX_SIZE (TREE_TYPE (exp)) == NULL_TREE
|| TREE_CODE (TYPE_ARRAY_MAX_SIZE (TREE_TYPE (exp)))
!= INTEGER_CST)
&& GET_MODE (x) == BLKmode))
return 1;