similar to: AVR is little endian, but requires function arguments to be in a "big endian" order, might need an additional data layout variable unless someone can suggest a better fix?

I'm a new LLVM developer contributing patches for the AVR platform and I'm trying to understand which parts of the code base are malfunctioning in my case. This LLVM IR... define hidden i32 @setServoAngle3(i32) local_unnamed_addr { entry: %1 = call i32 @myExternalFunction1(i32 %0, i32 119) ret i32 %1 } declare i32 @myExternalFunction1(i32, i32) Is being lowered to this assembly

Hey all, The AVR backend has now finally been merged in-tree completely. Thanks to Krzysztof and Matt for all of their hard work reviewing patches <https://reviews.llvm.org/differential/query/AuHaJ3SXjDmO> Development will now halt on the downstream repository (on GitHub <https://github.com/avr-llvm/llvm>), and it will now be done LLVM proper. This is good news, especially for the

Thanks! The new are of xmega3 architecture, which is already included. So this should be simple. Where is the information about ISR-vector table, SRAM addresses and so on stored? -- Wilhelm Am 04.03.20 um 11:03 schrieb Dylan McKay: > Hey Wilhelm, > > This should be possible by editing the 'AVRDevices.td' [1]TableGen > definitions to add an entry for the newer chip types.

Hello. I was wondering if it is possible to implement placing RO variables within progmem sections. For now it is possible to just use [[gnu::progmem]] and read variables using assembly. My proposal is to: Use those variables as any other, without creating assembly. While reading them, compiler has all necessary knowledge where the variable is and can generate assembly Possible future

When I compile this LLVM IR…. @0 = private constant [19 x i8] c"V4main10Brightness\00", section "__TEXT,__swift3_typeref, regular, no_dead_strip" @1 = private constant [9 x i8] c"Vs5UInt8\00", section "__TEXT,__swift3_typeref, regular, no_dead_strip" @2 = private constant [18 x i8] c"currentBrightness\00", section "__TEXT,__swift3_reflstr,

Am 04.03.20 um 11:16 schrieb Dylan McKay: > > The new are of xmega3 architecture, which is already included. So this > should be simple. > > Where is the information about ISR-vector table, SRAM addresses and so > on stored? > > > At the moment, this is not implemented in LLVM; these details are left > to the frontend. Clang/compiler-rt does not

> On Feb 3, 2017, at 12:45 PM, Dylan McKay via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > The builder isn’t marked as experimental so I think the expectation is that people keep it green and contact the bot owner if they need help figuring out why their change makes it red. That said, it sounds a bit odd to have a non-experimental builder for an experimental backend. >

To those interested in AVR backend additions to LLVM, the LLVM review tools "Phabricator" ( don't ask me to say that 3 times fast ), allows easy searching. Go to http://reviews.llvm.org/ and type in AVR in the search entry. This will give you a list of the commits, and resolutions. From my understanding ( NO Expert ), a large part of the skeleton code has been added. The leave

> On Feb 3, 2017, at 4:18 AM, Tobias Grosser via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > On Fri, Feb 3, 2017, at 11:37 AM, Dylan McKay via llvm-dev wrote: >> Hey all, >> >> Every few weeks, a change is committed to trunk that breaks the AVR >> buildbot. >> >> A problem presents when commit authors do not fix the build, and just

Am 04.03.20 um 13:28 schrieb Dylan McKay: > > * *The C/C++ function needs to be declared with either the calling > convention avr-interrupt or avr-non-blocking-interrupt.* Skipping > this step will cause regular ret instructions to be emitted for > return-from-subroutine, instead of the required reti for interrupt > handlers. ISRs also have stricter

> > Should we just make it a normal target? > My only remaining reservation here - the generic DebugInfo tests, which presumably due to an unimplemented 16-bit branch somewhere deep in the llvm-objdump callstack. The AVR backend passes virtually all of the LLVM test suite but these when avr-unknown-unknown is set as the default target. It feels like the inclusion of ~80 XFAILs for these

Hi Dylan, the following code volatile uint8_t v1; volatile uint8_t v2; __attribute__((interrupt)) void __vector_21(void) { v2 = v1; } produces in C mode: 00000092 <__vector_21>: 92: 80 91 61 00 lds r24, 0x0061 ; 0x800061 <v1> 96: 80 93 60 00 sts 0x0060, r24 ; 0x800060 <__data_end> 9a: 08 95 ret and in C++ mode: 00000074

Hi everyone, I've been wondering how to correctly build clang/LLVM for the AVR target architecture. Unfortunately documentation is very scarce (or outdated or I didn't find it) and while I've been able to build clang/LLVM for AVR I'm still falling short of compiling an actual binary for the MCU. Here are the steps I've undertaken so far: git clone

How is the llvm-avr backend integration going ? Will it be functional ( experimental ) in the 3.8 release ? Will Clang recognize options for avr ? thanks. Allen -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20151218/be23dc42/attachment.html>

I think you can probably treat that as a broad ‘no objection’ by the community. Are there any other active contributors to the AVR back end? David > On 27 Oct 2015, at 09:41, Dylan McKay via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > Ping. > > On Fri, Oct 23, 2015 at 4:04 PM, Dylan McKay <dylanmckay34 at gmail.com> wrote: > Hello all, > > I have

I'm beginning to use the AVR backend. I ran into the problem, that newer (tiny1, mega0) µC as a tiny1614 are not supported. How do I add these to the AVR backend? Thanks!

Thank you for both of your input. Yes, I try to cross-compile for AVR, the simple ATMEGA328P used in every Arduino Uno. My main motivation being that I hope to be able to use a couple of STL containers, <functional> and <type_traits> on the MCU. Not sure though if this can be reached by going via the clang route. Getting back to the compilation: when I run clang with both both

Greetings. I have a Tripp-Lite AVR-900U that I am trying to get work with NUT. (I rather naively bought the thing assuming that since NUT worked with the AVR-750U, that the same would be so of this model.) Here's what I've got so far: # upsdrvctl start Network UPS Tools - UPS driver controller 2.4.3 Network UPS Tools - Generic HID driver 0.34 (2.4.3) USB communication driver 0.31 This

[the mailing list you want is nut-upsuser.] On Mon, Aug 3, 2009 at 8:05 AM, Blagovest Kolenichev wrote: > Hi, all > > I had fail to find in the supported hardware page > > http://www.networkupstools.org/compat/stable.html > > support for "NOVA AVR 625", but see that "NOVA AVR 600 Serial" > is supported. Can you tell us is there a big difference between

Hi All, For quite some time there's been a side project for developing an AVR back end for LLVM: http://sourceforge.net/projects/avr-llvm/ What is required from us to be able to add this work to the LLVM repo? And when do you think would be a good time for us to do that? If this is located somewhere in the docs and I've missed it, pointers would certainly be appreciated. Thanks, Eric