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| author | Mike Stump <mrs@gcc.gnu.org> | 1997-04-23 20:04:25 +0000 |
|---|---|---|
| committer | Mike Stump <mrs@gcc.gnu.org> | 1997-04-23 20:04:25 +0000 |
| commit | e976b8b277eb0ae570a2c3317e77713fff846758 (patch) | |
| tree | ed1bd25525ef36f94c97fb911c74203e02095a25 /gcc/tree.def | |
| parent | 2284f91b110a72392473ec763f64c1e7ea12a1d0 (diff) | |
| download | gcc-e976b8b277eb0ae570a2c3317e77713fff846758.zip gcc-e976b8b277eb0ae570a2c3317e77713fff846758.tar.gz gcc-e976b8b277eb0ae570a2c3317e77713fff846758.tar.bz2 | |
Add setjmp/longjmp exception handling.
From-SVN: r13968
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 8ba266a..e77adeb 100644 --- a/gcc/tree.def +++ b/gcc/tree.def @@ -458,7 +458,10 @@ DEFTREECODE (METHOD_CALL_EXPR, "method_call_expr", "e", 4) manages to act on the proper value. The cleanup is executed by the first enclosing CLEANUP_POINT_EXPR, if it exists, otherwise it is the responsibility of the caller to manually - call expand_cleanups_to, as needed. */ + call expand_start_target_temps/expand_end_target_temps, as needed. + + This differs from TRY_CATCH_EXPR in that operand 2 is always + evaluated when an exception isn't throw when cleanups are run. */ DEFTREECODE (WITH_CLEANUP_EXPR, "with_cleanup_expr", "e", 3) /* Specify a cleanup point. @@ -689,6 +692,24 @@ DEFTREECODE (PREDECREMENT_EXPR, "predecrement_expr", "e", 2) DEFTREECODE (PREINCREMENT_EXPR, "preincrement_expr", "e", 2) DEFTREECODE (POSTDECREMENT_EXPR, "postdecrement_expr", "e", 2) DEFTREECODE (POSTINCREMENT_EXPR, "postincrement_expr", "e", 2) + +/* Evalute operand 1. If and only if an exception is thrown during + the evaluation of operand 1, evaluate operand 2. + + This differs from WITH_CLEANUP_EXPR, in that operand 2 is never + evaluated unless an exception is throw. */ +DEFTREECODE (TRY_CATCH_EXPR, "try_catch_expr", "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 + exception handling backend, expand_dhc_cleanup specifically. */ +DEFTREECODE (POPDHC_EXPR, "popdhc_expr", "s", 0) + +/* Pop the top element off the dynamic cleanup chain. Used in + conjunction with the exception handling. This is meant to be used + only by the exception handling backend. */ +DEFTREECODE (POPDCC_EXPR, "popdcc_expr", "s", 0) /* These types of expressions have no useful value, and always have side effects. */ |