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(collect_iterators): Handle simple expressions quickly.

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Don't try to interpret operands that are RTL as if they were trees.

From-SVN: r3616
This commit is contained in:
Richard Kenner 1993-03-02 19:01:48 -05:00
parent be8dcd745f
commit 03407c7527
1 changed files with 23 additions and 0 deletions
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23
gcc/c-iterate.c
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@ -212,14 +212,37 @@ collect_iterators (exp, list)
switch (TREE_CODE_CLASS (TREE_CODE (exp)))
{
case '1':
return collect_iterators (TREE_OPERAND (exp, 0), list);
case '2':
case '<':
return collect_iterators (TREE_OPERAND (exp, 0),
collect_iterators (TREE_OPERAND (exp, 1),
list));
case 'e':
case 'r':
{
int num_args = tree_code_length[TREE_CODE (exp)];
int i;
/* Some tree codes have RTL, not trees, as operands. */
switch (TREE_CODE (exp))
{
case SAVE_EXPR:
case CALL_EXPR:
num_args = 2;
break;
case METHOD_CALL_EXPR:
num_args = 3;
break;
case WITH_CLEANUP_EXPR:
num_args = 1;
break;
case RTL_EXPR:
return list;
}
for (i = 0; i < num_args; i++)
list = collect_iterators (TREE_OPERAND (exp, i), list);
return list;