diff options
Diffstat (limited to 'gcc/tree.def')
| -rw-r--r-- | gcc/tree.def | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/gcc/tree.def b/gcc/tree.def index 71d0687043c..02305e1ea66 100644 --- a/gcc/tree.def +++ b/gcc/tree.def @@ -1,6 +1,6 @@ /* This file contains the definitions and documentation for the tree codes used in the GNU C compiler. - Copyright (C) 1987, 1988, 1993, 1995, 1997 Free Software Foundation, Inc. + Copyright (C) 1987, 1988, 1993, 1995, 1997, 1998 Free Software Foundation, Inc. This file is part of GNU CC. @@ -702,6 +702,27 @@ DEFTREECODE (POSTINCREMENT_EXPR, "postincrement_expr", 'e', 2) evaluated unless an exception is throw. */ DEFTREECODE (TRY_CATCH_EXPR, "try_catch_expr", 'e', 2) +/* Evaluate the first operand. + The second operand is a a cleanup expression which is evaluated + before an exit (normal, exception, or jump out) from this expression. + + Like a CLEANUP_POINT_EXPR/WITH_CLEANUP_EXPR combination, but those + always copy the cleanup expression where needed. In contrast, + TRY_FINALLY_EXPR generates a jump to a cleanup subroutine. + (At least conceptually; the optimizer could inline the cleanup + subroutine in the same way it could inline normal subroutines.) + TRY_FINALLY_EXPR should be used when the cleanup is actual statements + in the source of the current function (which people might want to + set breakpoints in). */ +DEFTREECODE (TRY_FINALLY_EXPR, "try_finally", 'e', 2) + +/* Used internally for cleanups in the implementation of TRY_FINALLY_EXPR. + (Specifically, it is created by expand_expr, not front-ends.) + Operand 0 is the rtx for the start of the subroutine we need to call. + Operand 1 is the rtx for a variable in which to store the address + of where the subroutine should return to. */ +DEFTREECODE (GOTO_SUBROUTINE_EXPR, "goto_subroutine", 'e', 2) + /* Pop the top element off the dynamic handler chain. Used in conjunction with setjmp/longjmp based exception handling, see except.c for more details. This is meant to be used only by the |