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tree.def (TYPE_NONCOPIED_PARTS): Revise documentation to match reality. 

* tree.def (TYPE_NONCOPIED_PARTS): Revise documentation to match
        reality.
        * expr.c (init_noncopied_parts): Don't generate initializers for
        parts that don't need them.

From-SVN: r26969
This commit is contained in:
Mark Mitchell 1999-05-17 07:21:14 +00:00 committed by Mark Mitchell
parent 74a6cc9fb5
commit c15398de77
3 changed files with 16 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
Mon May 17 07:23:34 1999 Mark Mitchell <mark@codesourcery.com>
* tree.def (TYPE_NONCOPIED_PARTS): Revise documentation to match
reality.
* expr.c (init_noncopied_parts): Don't generate initializers for
parts that don't need them.
Mon May 17 02:56:35 PDT 1999 Jeff Law (law@cygnus.com)
* version.c: Bump for snapshot.

2
gcc/expr.c
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@ -5097,7 +5097,7 @@ init_noncopied_parts (lhs, list)
for (tail = list; tail; tail = TREE_CHAIN (tail))
if (TREE_CODE (TREE_VALUE (tail)) == TREE_LIST)
parts = chainon (parts, init_noncopied_parts (lhs, TREE_VALUE (tail)));
else
else if (TREE_PURPOSE (tail))
{
tree part = TREE_VALUE (tail);
tree part_type = TREE_TYPE (part);

10
gcc/tree.def
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@ -98,8 +98,14 @@ DEFTREECODE (BLOCK, "block", 'b', 0)
points to the start of the chain.
The TYPE_NONCOPIED_PARTS field is a list specifying which parts
of an object of this type should *not* be copied by assignment.
The TREE_PURPOSE of each element is the offset of the part
and the TREE_VALUE is the size in bits of the part.
The TREE_VALUE of each is a FIELD_DECL that should not be
copied. The TREE_PURPOSE is an initial value for that field when
an object of this type is initialized via an INIT_EXPR. It may
be NULL if no special value is required. Even the things in this
list are copied if the right-hand side of an assignment is known
to be a complete object (rather than being, perhaps, a subobject
of some other object.) The determination of what constitutes a
complete object is done by fixed_type_p.
The TYPE_NAME field contains info on the name used in the program
for this type (for GDB symbol table output). It is either a
TYPE_DECL node, for types that are typedefs, or an IDENTIFIER_NODE