search for: cherubin

Hi all, is there any Italian developer that can be interested in a LLVM social event/meetup in Italy? Best, --- Marco Bambini http://creolabs.com http://twitter.com/sqlabs

...to execute bitcode generated by opt with -O3 or with the same optimization passes as -O3, the performance are still different. So, are there some special operations by -O3 option? I read the source code of opt, but I cannot find the reason. Best regards Zide At 2018-08-16 22:13:14, "Stefano Cherubin via llvm-dev" <llvm-dev at lists.llvm.org> wrote: Hello Emanuele, When you provide the optimization level -O3 to the clang driver, it does not simply schedule a sequence of passes to be run on the intermediate representation. Indeed, it schedules target-independent and target-dependen...

...y applying the optimization passes using opt. Apparently, those metadata are necessary to fully optimize the code. I hope that this may help you too. Best regards Emanuele Del Sozzo ________________________________ From: llvm-dev <llvm-dev-bounces at lists.llvm.org> on behalf of Stefano Cherubin via llvm-dev <llvm-dev at lists.llvm.org> Sent: Friday, August 17, 2018 11:44:50 AM To: llvm-dev at lists.llvm.org; cszide Subject: Re: [llvm-dev] Replication -O3 optimizations manually Hi Zide, the scope of opt is limited to the LLVM-IR, which is meant to be always target independent. In o...

Hello llvm-dev, my name is Emanuele and I am an intern in ARM. As part of the project I am doing here, I would like to manually replicate the optimizations that LLVM applies when I type -O3. In other words, I would like to know what are the compilation flags/passes that -O3 triggers. I noticed that GCC reports, on its website, all the flags that are enforced by -O3