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...o fix this later today. I'll probably do what Reid was suggesting and use what is already in there for Windows. Thanks, Samuel Bill Schmidt <wschmidt at linux.vnet.ibm.com> wrote on 11/04/2014 12:11:08 PM: > From: Bill Schmidt <wschmidt at linux.vnet.ibm.com> > To: Samuel F Antao/Watson/IBM at IBMUS > Cc: azanella at linux.vnet.ibm.com, beanz at apple.com, Hal Finkel > <hfinkel at anl.gov>, LLVM Dev <llvmdev at cs.uiuc.edu> > Date: 11/04/2014 12:11 PM > Subject: Re: Issue with std::call_once in PPC64 platform > > On Tue, 2014-11-04 at 11:59 -05...

.... In general it sounds like std::call_once may not really be bug free. Jiangning, can you please provide your gcc/libstdc++ version? Thanks, -Chris > On Nov 4, 2014, at 9:38 AM, Bill Schmidt <wschmidt at linux.vnet.ibm.com> wrote: > > On Tue, 2014-11-04 at 12:17 -0500, Samuel F Antao wrote: >> Ok, I'll put a patch together to fix this later today. I'll probably >> do what Reid was suggesting and use what is already in there for >> Windows. > > Hm, better hold off on that. Ulrich Weigand has noted that there is > invalid code generation occur...

...gning, can you please provide your gcc/libstdc++ version? >> >> Thanks, >> -Chris >> >> >> > On Nov 4, 2014, at 9:38 AM, Bill Schmidt <wschmidt at linux.vnet.ibm.com> >> wrote: >> > >> > On Tue, 2014-11-04 at 12:17 -0500, Samuel F Antao wrote: >> >> Ok, I'll put a patch together to fix this later today. I'll probably >> >> do what Reid was suggesting and use what is already in there for >> >> Windows. >> > >> > Hm, better hold off on that. Ulrich Weigand has noted that...

...piling with clang 3.5, but those are the gcc toolchains I am using. What do you think is the best way to fix this? Thanks! Samuel Bill Schmidt <wschmidt at linux.vnet.ibm.com> wrote on 11/04/2014 11:45:06 AM: > From: Bill Schmidt <wschmidt at linux.vnet.ibm.com> > To: Samuel F Antao/Watson/IBM at IBMUS > Cc: LLVM Dev <llvmdev at cs.uiuc.edu>, beanz at apple.com, Hal Finkel > <hfinkel at anl.gov>, azanella at linux.vnet.ibm.com > Date: 11/04/2014 11:45 AM > Subject: Re: Issue with std::call_once in PPC64 platform > > Hi Samuel, > > I haven...

On Mon, 2014-09-08 at 22:00 -0400, Samuel F Antao wrote: > Alexey, Alexander, > > Thanks for the suggestions. I tried removing the flag SA_NODEFER but > it didn't do any good... I have been digging into the problem with the > null_deref test today but I was unable to clearly identify the > problem. I suspect that it was eith...

...er seem to have that turned on by default. But I assume that clang follows what gcc does, and have that turned off. Thanks again, Samuel Tim Northover <t.p.northover at gmail.com> wrote on 07/31/2014 09:54:55 AM: > From: Tim Northover <t.p.northover at gmail.com> > To: Samuel F Antao/Watson/IBM at IBMUS > Cc: "llvmdev at cs.uiuc.edu" <llvmdev at cs.uiuc.edu>, Olivier H > Sallenave/Watson/IBM at IBMUS > Date: 07/31/2014 09:55 AM > Subject: Re: [LLVMdev] FPOpFusion = Fast and Multiply-and-add combines > > Hi Samuel, > > On 30 July 2014 22:3...

Hi all, I observe that r220932 (Removing the static initializer in ManagedStatic.cpp by using llvm_call_once to initialize the ManagedStatic mutex.) is causing tablegen to segfault in PPC platforms during static initialization. The crash happens while calling std::call_once introduced by this patch in the wrapper used in getManagedStaticMutex. I understand this call is buggy for some platforms

...can submit the annotation patch for review. > Some limited tests on polybench benchmarks (e.g., 3mm) without any > polyhedral > optimizations, thus only parallel and noalias annotations, showed up to > 20% improvement. > > Best regards, > Johannes > > On 09/19, Samuel F Antao wrote: > > > > > > Hi all, > > > > In LLVM language reference I read that one can use noalias and > alias.scope > > metadata to provide more detailed information about pointer aliasing. > > However, I was unable to obtain any LLVM IR annotations using th...

Hi all, Shouldn't SafeStack pass be executed only if the target has TLS support? E.g. currently for NVPTX there is no way to implement `__safestack_unsafe_stack_ptr`. Any comments? Thanks, Samuel -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150623/53f40bea/attachment.html>

...n try removing the flag from compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix_libcdep.cc and see if that makes any difference. HTH, Alex On Fri, Sep 5, 2014 at 5:26 AM, Alexey Samsonov <vonosmas at gmail.com> wrote: > +Bill Schmidt > > On Thu, Sep 4, 2014 at 5:39 PM, Samuel F Antao <sfantao at us.ibm.com> wrote: >> >> Hi all, >> >> I have been experiencing the failure of the address sanitizer regression >> tests for a PPC64 target (Power7 machine). My understanding is that most of >> the failures are related with the fact the stack is...

On Mon, Sep 8, 2014 at 7:00 PM, Samuel F Antao <sfantao at us.ibm.com> wrote: > Alexey, Alexander, > > Thanks for the suggestions. I tried removing the flag SA_NODEFER but it > didn't do any good... I have been digging into the problem with the > null_deref test today but I was unable to clearly identify the problem. I...

...r execution that taking advantage of a particular rounding property. Maybe there is someone who can shed some light on this? Thanks, Samuel Sanjay Patel <spatel at rotateright.com> wrote on 08/06/2014 02:30:17 PM: > From: Sanjay Patel <spatel at rotateright.com> > To: Samuel F Antao/Watson/IBM at IBMUS > Cc: Tim Northover <t.p.northover at gmail.com>, Olivier H Sallenave/ > Watson/IBM at IBMUS, "llvmdev at cs.uiuc.edu" <llvmdev at cs.uiuc.edu> > Date: 08/06/2014 02:30 PM > Subject: Re: [LLVMdev] FPOpFusion = Fast and Multiply-and-add combines...

Hi all, The AllowFPOpFusion option passed to a target can currently take 3 different values, Fast, Standard or Strict (TargetOptions.h), being Standard the default. In the DAGCombiner, during the combination of mul and add/subtract into multiply-and-add/subtract, this option is expected to be Fast in order to enable the combine. This means, that by default no multiply-and-add opcodes are going

Hi all, In LLVM language reference I read that one can use noalias and alias.scope metadata to provide more detailed information about pointer aliasing. However, I was unable to obtain any LLVM IR annotations using this metadata from any LLVM optimization pass or Clang frontend (am I missing something?). If I understand it correctly, this information would complement the type-based alias

Hi all, I have been experiencing the failure of the address sanitizer regression tests for a PPC64 target (Power7 machine). My understanding is that most of the failures are related with the fact the stack is not being dumped. I tried to understand what might be wrong and started by looking into the null_deref.cc test as it hangs during the test run. I observe that after the detection of the

Hi Sergey, Thanks for putting the new version of the document together! I don't see any other issues. I strongly believe the approach described in the document is a nice way to get OpenMP offloading support in clang. I plan to start actively contributing code for this component of the OpenMP implementation soon. Thanks again, Samuel 2015-04-29 11:47 GMT-04:00 Sergey Ostanevich

Hello everybody! To continue the original (http://article.gmane.org/gmane.comp.compilers.llvm.devel/75674) discussion of offload infrastructure I have an updated document with more details for your attention. The document is a consensus of the contributors representing a number of institutions: ANL, AMD, IBM, Intel and Texas Instruments. Our intent is to have a discussion and an approval from

...failures](http://lists.llvm.org/pipermail/llvm-dev/2016-March/097617.html). Optimisation passes are assigned numbers which can be used to help bisect a failure. Michael Gottesman reports [a similar approach used in Swift](http://lists.llvm.org/pipermail/llvm-dev/2016-March/097637.html). * Samuel F Antao has [summarised recent discussion on unified offloading support in Clang](http://lists.llvm.org/pipermail/cfe-dev/2016-March/048087.html). * Duncan P. N. Exon Smith has proposed an [RFC on lazy-loading of debug info metadata](http://lists.llvm.org/pipermail/llvm-dev/2016-March/097419.html). * Wha...

Dear all, I recently started using LLVM to design a simple compiler and I got stuck at the DAG->DAG instruction selection. Let me describe you the situation: - I implemented a simple language and I was successful with obtaining the LLVM IR. - Most of the operations were calls to external functions. - I successful JITed it for the x86 backend. - Then, I replaced the