Re: Can gcc itself be tested with ubsan? If so, how?

On 9/28/21 8:35 AM, Erick Ochoa via Gcc wrote: Can ubsan be used on the compiler itself? I regularly build the compiler(s) natively with ubsan enabled, see for instance: https://gcc.gnu.org/pipermail/gcc-testresults/2021-September/719448.html The configure line tells you how to do it (towa

Re: Can gcc itself be tested with ubsan? If so, how?

Hi, just as a note. This is also of interest to me. I have wanted to compile a single pass that I wrote using ubsan/other sanitizers for testing purposes. I was wondering if someone has already modified the build system to use ubsan to test their passes and if they could document the process for d

Re: GCC Register Pressure BoF notes

On Mon, Sep 27, 2021 at 5:08 PM David Edelsohn wrote: > > Richi and Aaron, > > Thanks for the great conversation about register pressure at the GCC > BoF at LPC2021. It was a very productive session with good ideas > about how to proceed. > > Where do you suggest that I place the Register pressur

Re: [TCWG CI] 471.omnetpp slowed down by 8% after gcc: Avoid invalid loop transformations in jump threading registry.

On 9/27/2021 7:52 AM, Aldy Hernandez wrote: [CCing Jeff and list for broader audience] On 9/27/21 2:53 PM, Maxim Kuvyrkov wrote: Hi Aldy, Your patch seems to slow down 471.omnetpp by 8% at -O3.  Could you please take a look if this is something that could be easily fixed? First of all, t

Can gcc itself be tested with ubsan? If so, how?

I tried just adding "-fsanitize=undefined" to my CXX_FLAGS and got a bunch of errors like this: /usr/bin/ld: ../libcody/libcody.a(server.o): in function `std::__cxx11::basic_string, std::allocator >::_Alloc_hider::~_Alloc_hider()': /usr/include/c++/9/bits/basic_string.h:150: undefined reference

Re: how can I contribute to your organisation

On Mon, Sep 27, 2021 at 9:54 AM Aditya Saini wrote: > Hey ,I am Aditya saini and I can code in c/c++ .I want to be a part of > your organization so please guide me how can I contribute to your > organization . > There's a lot of information at https://gcc.gnu.org/contribute.html Let us know

Re: [TCWG CI] 471.omnetpp slowed down by 8% after gcc: Avoid invalid loop transformations in jump threading registry.

On 9/27/21 11:39 AM, Maxim Kuvyrkov via Gcc wrote: On 27 Sep 2021, at 16:52, Aldy Hernandez wrote: [CCing Jeff and list for broader audience] On 9/27/21 2:53 PM, Maxim Kuvyrkov wrote: Hi Aldy, Your patch seems to slow down 471.omnetpp by 8% at -O3. Could you please take a look if this is so

Re: [TCWG CI] 471.omnetpp slowed down by 8% after gcc: Avoid invalid loop transformations in jump threading registry.

> On 27 Sep 2021, at 16:52, Aldy Hernandez wrote: > > [CCing Jeff and list for broader audience] > > On 9/27/21 2:53 PM, Maxim Kuvyrkov wrote: >> Hi Aldy, >> Your patch seems to slow down 471.omnetpp by 8% at -O3. Could you please >> take a look if this is something that could be easily fixed?

GCC Register Pressure BoF notes

Richi and Aaron, Thanks for the great conversation about register pressure at the GCC BoF at LPC2021. It was a very productive session with good ideas about how to proceed. Where do you suggest that I place the Register pressure BoF notes? GCC Wiki? Email it to the GCC mailing list? Bugzilla?

how can I contribute to your organisation

Hey ,I am Aditya saini and I can code in c/c++ .I want to be a part of your organization so please guide me how can I contribute to your organization . Thank you Sent from Mail for Windows

Re: [TCWG CI] 471.omnetpp slowed down by 8% after gcc: Avoid invalid loop transformations in jump threading registry.

[CCing Jeff and list for broader audience] On 9/27/21 2:53 PM, Maxim Kuvyrkov wrote: Hi Aldy, Your patch seems to slow down 471.omnetpp by 8% at -O3. Could you please take a look if this is something that could be easily fixed? First of all, thanks for chasing this down. It's incredibly us