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stmt.c (expand_anon_union_decl): When any of the elements of the union is addressable, so is the entire union.

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* stmt.c (expand_anon_union_decl): When any of the elements of the
	union is addressable, so is the entire union.

From-SVN: r29816
This commit is contained in:
Mark Mitchell 1999-10-04 23:18:09 +00:00 committed by Mark Mitchell
parent 436c94cb55
commit 8a693bd0bb
2 changed files with 18 additions and 5 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Mon Oct 4 16:22:20 1999 Mark Mitchell <mark@codesourcery.com>
* stmt.c (expand_anon_union_decl): When any of the elements of the
union is addressable, so is the entire union.
Mon Oct 4 11:38:33 1999 Richard Henderson <rth@cygnus.com>
* sbitmap.c (sbitmap_ones): Don't set too many bits.

18
gcc/stmt.c
View File

@ -4162,15 +4162,25 @@ expand_anon_union_decl (decl, cleanup, decl_elts)
{
struct nesting *thisblock = current_function == 0 ? 0 : block_stack;
rtx x;
tree t;
/* If any of the elements are addressable, so is the entire union. */
for (t = decl_elts; t; t = TREE_CHAIN (t))
if (TREE_ADDRESSABLE (TREE_VALUE (t)))
{
TREE_ADDRESSABLE (decl) = 1;
break;
}
expand_decl (decl);
expand_decl_cleanup (decl, cleanup);
x = DECL_RTL (decl);
while (decl_elts)
/* Go through the elements, assigning RTL to each. */
for (t = decl_elts; t; t = TREE_CHAIN (t))
{
tree decl_elt = TREE_VALUE (decl_elts);
tree cleanup_elt = TREE_PURPOSE (decl_elts);
tree decl_elt = TREE_VALUE (t);
tree cleanup_elt = TREE_PURPOSE (t);
enum machine_mode mode = TYPE_MODE (TREE_TYPE (decl_elt));
/* Propagate the union's alignment to the elements. */
@ -4213,8 +4223,6 @@ expand_anon_union_decl (decl, cleanup, decl_elts)
thisblock->data.block.cleanups
= temp_tree_cons (decl_elt, cleanup_elt,
thisblock->data.block.cleanups);
decl_elts = TREE_CHAIN (decl_elts);
}
}