On Thu, Mar 26, 2020 at 2:00 PM lizekun (A) <lizek...@huawei.com> wrote: > > Thanks for replying! > > I've dumped the lto stream-out file and noticed that constructors are > streamed to > function_body. > Also, I noticed that, the binany which is generated when streaming > constructors > to function_body has bigger size than the one's streaming to decls. > > So, I wonder why we need to stream constructors to other section.
Because we then can ship them selectively to only the LTRANS units that can make use of them saving in streaming for other LTRANS units. Richard. > Best regards! > > > -----Original Message----- > > From: Richard Biener [mailto:richard.guent...@gmail.com] > > Sent: 2020年3月26日 20:27 > > To: lizekun (A) <lizek...@huawei.com> > > Cc: gcc@gcc.gnu.org > > Subject: Re: Question on lto-stream-out > > > > On Thu, Mar 26, 2020 at 12:01 PM lizekun (A) <lizek...@huawei.com> wrote: > > > > > > Hi, > > > I have a question on function "get_symbol_initial_value" in lto-stream- > > out.c. > > > > > > When the initial value of symbol is constructor, it will be replaced by an > > error_mark. > > > What's the benefit of donging this? In some cases, it increases the size > > > of > > binary. > > > > constructors are streamed into a separate section, the above just "marks" > > the variable that there is one available. > > > > > I would be grateful if anyone could help. > > > > > > Best regulars
