Ok, that makes sense. Thanks again:)
> -----Original Message----- > From: Richard Biener [mailto:richard.guent...@gmail.com] > Sent: 2020年3月26日 21:19 > To: lizekun (A) <lizek...@huawei.com> > Cc: gcc@gcc.gnu.org > Subject: Re: Question on lto-stream-out > > 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
