On Thu, Mar 29, 2018 at 2:14 PM, Martin Liška <mli...@suse.cz> wrote:
> Hi.
>
> I'm sending couple of documentation tweaks that touch LTO, binutils
> auto-load plugin
> support and valid options of -march (on x86-64).
@@ -9482,6 +9482,9 @@ types of hosts. The bytecode files are
versioned and there is a
strict version check, so bytecode files generated in one version of
GCC do not work with an older or newer version of GCC.
+Link-time optimization on ELF/DWARF systems works with generation of debugging
+information. Other systems are currently not supported.
+
Link-time optimization does not work well with generation of debugging
information. Combining @option{-flto} with
@option{-g} is currently experimental and expected to produce unexpected
this just adds to the current warning which doesn't look too useful.
Maybe simply
Index: doc/invoke.texi
===================================================================
--- doc/invoke.texi (revision 258915)
+++ doc/invoke.texi (working copy)
@@ -9483,9 +9483,8 @@ strict version check, so bytecode files
GCC do not work with an older or newer version of GCC.
Link-time optimization does not work well with generation of debugging
-information. Combining @option{-flto} with
-@option{-g} is currently experimental and expected to produce unexpected
-results.
+information on systems other than those using a combination of ELF and
+DWARF.
If you specify the optional @var{n}, the optimization and code
generation done at link time is executed in parallel using @var{n}
?
The other hunks look OK.
Richard.
> Martin
>
> gcc/ChangeLog:
>
> 2018-03-29 Martin Liska <mli...@suse.cz>
>
> PR lto/84995.
> * doc/invoke.texi: Document how LTO works with debug info.
> Describe auto-load support of binutils. Mention 'x86-64'
> as valid option value of -march option.
> ---
> gcc/doc/invoke.texi | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
>
