This makes -fexceptions enabled by -fnon-call-exceptions, removing
the odd state of !flag_exceptions && flag_non_call_exceptions from
middle-end consideration.
Bootstrapped and tested on x86_64-unknown-linux-gnu for all languages.
OK?
Richard.
2021-08-30 Richard Biener <rguent...@suse.de>
* common.opt (fexceptions): Mark
EnabledBy(fnon-call-exceptions).
* doc/invoke.texi (fnon-call-exceptions): Document this
enables -fexceptions.
---
gcc/common.opt | 2 +-
gcc/doc/invoke.texi | 3 ++-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/gcc/common.opt b/gcc/common.opt
index ed8ab5fbe13..7d69ab5ef7c 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -1509,7 +1509,7 @@ Common Var(flag_emit_class_debug_always) Init(0)
Do not suppress C++ class debug information.
fexceptions
-Common Var(flag_exceptions) Optimization
+Common Var(flag_exceptions) Optimization EnabledBy(fnon-call-exceptions)
Enable exception handling.
fexpensive-optimizations
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index b83bd902cec..f7bb193b51d 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -16410,7 +16410,8 @@ Note that this requires platform-specific runtime
support that does
not exist everywhere. Moreover, it only allows @emph{trapping}
instructions to throw exceptions, i.e.@: memory references or floating-point
instructions. It does not allow exceptions to be thrown from
-arbitrary signal handlers such as @code{SIGALRM}.
+arbitrary signal handlers such as @code{SIGALRM}. This enables
+@option{-fexceptions}.
@item -fdelete-dead-exceptions
@opindex fdelete-dead-exceptions
--
2.31.1
