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Add documentation of TREE_ADDRESSABLE in FIELD_DECL

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From-SVN: r34309
This commit is contained in:
Richard Kenner 2000-05-31 16:53:37 -04:00
parent 051c57dafd
commit 1febe16ba4
1 changed files with 5 additions and 2 deletions
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7
gcc/tree.h
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@ -161,8 +161,8 @@ struct tree_common
addressable_flag:
TREE_ADDRESSABLE in
VAR_DECL, FUNCTION_DECL, CONSTRUCTOR, LABEL_DECL, ..._TYPE
IDENTIFIER_NODE
VAR_DECL, FUNCTION_DECL, FIELD_DECL, CONSTRUCTOR, LABEL_DECL,
..._TYPE, IDENTIFIER_NODE
static_flag:
@ -471,6 +471,9 @@ extern void tree_class_check_failed PARAMS ((const tree, char,
So it cannot be in a register.
In a FUNCTION_DECL, nonzero means its address is needed.
So it must be compiled even if it is an inline function.
In a FIELD_DECL node, it means that the programmer is permitted to
construct the address of this field. This is used for aliasing
purposes: see record_component_aliases.
In CONSTRUCTOR nodes, it means object constructed must be in memory.
In LABEL_DECL nodes, it means a goto for this label has been seen
from a place outside all binding contours that restore stack levels.