diff options
Diffstat (limited to 'gcc/tree.h')
| -rw-r--r-- | gcc/tree.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/tree.h b/gcc/tree.h index 12e7948d318..c6a5eab5024 100644 --- a/gcc/tree.h +++ b/gcc/tree.h @@ -484,9 +484,10 @@ struct GTY(()) tree_base { TREE_ADDRESSABLE in VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL + SSA_NAME all types CONSTRUCTOR, IDENTIFIER_NODE - STMT_EXPR, it means we want the result of the enclosed expression + STMT_EXPR CALL_EXPR_TAILCALL in CALL_EXPR @@ -1085,15 +1086,18 @@ extern void omp_clause_range_check_failed (const_tree, const char *, int, /* In VAR_DECL, PARM_DECL and RESULT_DECL nodes, nonzero means address of this is needed. So it cannot be in a register. In a FUNCTION_DECL it has no meaning. - 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. + In an artificial SSA_NAME that points to a stack partition with at least + two variables, it means that at least one variable has TREE_ADDRESSABLE. In ..._TYPE nodes, it means that objects of this type must be fully addressable. This means that pieces of this object cannot go into register parameters, for example. If this a function type, this means that the value must be returned in memory. + In CONSTRUCTOR nodes, it means object constructed must be in memory. In IDENTIFIER_NODEs, this means that some extern decl for this name - had its address taken. That matters for inline functions. */ + had its address taken. That matters for inline functions. + In a STMT_EXPR, it means we want the result of the enclosed expression. */ #define TREE_ADDRESSABLE(NODE) ((NODE)->base.addressable_flag) /* Set on a CALL_EXPR if the call is in a tail position, ie. just before the |