Hello,
Recently on gcc-help@ one of the users asked whether they need to set
-fvar-tracking-assignments on the command line by hand. The documentation may
be clearer in that this flag has a useful value by default, like -fvar-tracking
(i.e. GCC's behavior is to take the value of flag_var_tracking, unless there's
an override on the command line).
OK to commit?
I also see that introductory text says that the option list mentions negated
forms when they are supposed to be usually used on the command line, which
means that var-tracking paragraphs should in fact use
-fno-var-tracking[-assignments], because normally users will only need the
negative forms?
2015-01-30 Alexander Monakov <amona...@ispras.ru>
* doc/invoke.texi (-fvar-tracking-assignments): Clarify that VTA is
enabled by default together with var-tracking.
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 2d3c4f7..3ffba2e 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -7093,6 +7093,8 @@ optimizing. Use of @option{-gdwarf-4} is recommended
along with it.
It can be enabled even if var-tracking is disabled, in which case
annotations are created and maintained, but discarded at the end.
+By default, this flag is enabled together with @option{-fvar-tracking},
+except when selective scheduling is enabled.
@item -fvar-tracking-assignments-toggle
@opindex fvar-tracking-assignments-toggle
