From: Ronan Desplanques <desplanq...@adacore.com>
This patch removes a few dangling references to the late front-end
implementation of exceptions from the comments of targparm.ads, and
also fixes a thinko there.
gcc/ada/
* targparm.ads: Remove references to front-end-based exceptions. Fix
thinko.
Tested on x86_64-pc-linux-gnu, committed on master.
---
gcc/ada/targparm.ads | 25 +++++--------------------
1 file changed, 5 insertions(+), 20 deletions(-)
diff --git a/gcc/ada/targparm.ads b/gcc/ada/targparm.ads
index aa91ee60e82..01ee492e015 100644
--- a/gcc/ada/targparm.ads
+++ b/gcc/ada/targparm.ads
@@ -213,22 +213,7 @@ package Targparm is
-- Control of Exception Handling --
-----------------------------------
- -- GNAT implements three methods of implementing exceptions:
-
- -- Front-End Longjmp/Setjmp Exceptions
-
- -- This approach uses longjmp/setjmp to handle exceptions. It
- -- uses less storage, and can often propagate exceptions faster,
- -- at the expense of (sometimes considerable) overhead in setting
- -- up an exception handler.
-
- -- The generation of the setjmp and longjmp calls is handled by
- -- the front end of the compiler (this includes gigi in the case
- -- of the standard GCC back end). It does not use any back end
- -- support (such as the GCC3 exception handling mechanism). When
- -- this approach is used, the compiler generates special exception
- -- handlers for handling cleanups (AT-END actions) when an exception
- -- is raised.
+ -- GNAT provides two methods of implementing exceptions:
-- Back-End Zero Cost Exceptions
@@ -254,10 +239,10 @@ package Targparm is
-- Control of Available Methods and Defaults
- -- The following switches specify whether we're using a front-end or a
- -- back-end mechanism and whether this is a zero-cost or a sjlj scheme.
+ -- The following switch specifies whether this is a zero-cost or a sjlj
+ -- scheme.
- -- The per-switch default values correspond to the default value of
+ -- The default value corresponds to the default value of
-- Opt.Exception_Mechanism.
ZCX_By_Default_On_Target : Boolean := False;
@@ -408,7 +393,7 @@ package Targparm is
-- Control of Stack Checking --
-------------------------------
- -- GNAT provides three methods of implementing exceptions:
+ -- GNAT provides three methods of implementing stack checking:
-- GCC Probing Mechanism
--
2.40.0
