search for: thumbv7

After a recent upstream pull, my builds for ARM thumbv7 suddenly fail with messages like: error: instruction requires: arm-mode 21 uxtah r6, r0, r6 I use llc with -mtriple=thumbv7-unknown-unknown and llvm-mc with -triple=thumbv7-unknown-unkown. What's the right way to generate thumbv7 binaries? Thanks, -steve

Thanks! I also found test/CodeGen/ARM/ghc-tcreturn-lowered.ll, which tests only for thumbv7-eabi, so, i tried a few more variations: [x] arm64-apple-ios [x] arm64-apple-ios7.0.0 [x] arm64-apple-darwin [x] armv7-apple [x] thumbv7-apple [x] thumbv7-apple-darwin [x] i386-apple-ios [x] i386-apple-darwin [f] thumbv7-apple-ios [f] thumbv7-apple-ios7.0.0 [f] armv7-apple-ios I’ve also just bui...

Hi James, Thanks for the answer, can you elaborate on difference between thumb, thumb2, ARM, thumbv7. I'm a bit lost right now. When specifying thumbv7 llc will generate thumb only code, not thumb2 ? Best Regards Seb > -----Original Message----- > From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] > On Behalf Of James Molloy > Sent: Tuesday, May 29, 2012...

This buildbot looks like it's been failing since Friday - does anyone know/own/care about it? ---------- Forwarded message ---------- From: <llvm.buildmaster at lab.llvm.org> Date: Mon, Sep 28, 2015 at 7:29 PM Subject: buildbot failure in LLVM on clang-cmake-thumbv7-a15-full-sh To: Adrian Prantl <aprantl at apple.com>, Cameron Esfahani <dirty at apple.com>, Chris Bieneman <beanz at apple.com>, David Blaikie <dblaikie at gmail.com>, Evgeniy Stepanov <eugeni.stepanov at gmail.com>, Matthias Braun < matze at braunis.de>, Reid K...

...;if-then-else" instruction). The ARM architecture is numbered sequentially by evolution, so Thumb is available in v4t (meaning "v4 with Thumb extension") and Thumb-2 is available in v6t2. v7 includes Thumb-2 by default (for A-class cores such as Cortex-A8). So when specifying "thumbv7" as the architecture to LLVM, LLVM will generate Thumb-2 instructions and use IT instructions for conditional execution. Hope this helps, James On 30/05/12 23:34, Sebastien DELDON-GNB wrote: > Hi James, > > Thanks for the answer, can you elaborate on difference between thumb, thumb...

...a simple a.c, with add3 function- > > int add3(int i, int j) > { > int k = i+j; > return k; > } > > * Create LLVM IR using Xcode 5.1’s clang ( *clang –S -O0 -emit–llvm a.c* ) > * Create obj file – using llc - *. /i686-apple-darwin11-llc > -filetype=obj -mtriple=thumbv7-windows-msvc -O0 a.s * ... in general this doesn't work. The transformation from C to LLVM IR needs to know the target triple. Try "clang --target=thumbv7-windows-msvc a.c -c -o a.obj"? Since clang has a built-in assembler, you should get a valid COFF file out, to the extent that...

...ild them on my MAC 10.9 machine. * Wrote a simple a.c, with add3 function- int add3(int i, int j) { int k = i+j; return k; } * Create LLVM IR using Xcode 5.1’s clang ( *clang –S -O0 -emit–llvm a.c* ) * Create obj file – using llc - *. /i686-apple-darwin11-llc -filetype=obj -mtriple=thumbv7-windows-msvc -O0 a.s * ... in general this doesn't work. The transformation from C to LLVM IR needs to know the target triple. Try "clang --target=thumbv7-windows-msvc a.c -c -o a.obj"? Since clang has a built-in assembler, you should get a valid COFF file out, to the extent that cla...

...> The ARM architecture is numbered sequentially by evolution, so Thumb is > available in v4t (meaning "v4 with Thumb extension") and Thumb-2 is > available in v6t2. > > v7 includes Thumb-2 by default (for A-class cores such as Cortex-A8). > So > when specifying "thumbv7" as the architecture to LLVM, LLVM will > generate Thumb-2 instructions and use IT instructions for conditional > execution. > > Hope this helps, > > James > > On 30/05/12 23:34, Sebastien DELDON-GNB wrote: > > Hi James, > > > > Thanks for the answe...

When I use llvm-mc’s ‘-show-encoding’, it only goes as far as printing “fixups”: $ echo -e "adr r0, lbl\nnop\nlbl:" | llvm-mc -triple=thumbv7 -show-encoding Outputs: @ encoding: [A,0xa0] @ fixup A – offset: 0, value: lbl, kind: fixup_thumb_adr_pcrel_10 To find out that it is encoded as 0xa001, I can do: $ echo -e "adr r0, lbl\nnop\nlbl:" | llvm-mc -triple=thumbv7 -show-encoding -filetype=obj > tmp.o $ llvm-o...

I am talking about Windows Mobile 8 and 8.1 and not CE. Not sure though that the Windows 8 (ARM NT) is similar to Windows Mobile 8 platform. I used the following command to generate the obj file Llc.exe -mtriple=thumbv7-windows -filetype=obj <some_name>.bc The object file generated in the above object doesn't get linked when I try to link it with the windows mobile library as it fails to recognize the object format. ( Not a valid object file ) Hope I am clear. ~rajat -----Original Message----- From...

...gt; return k; >>> } >>> >>> * Create LLVM IR using Xcode 5.1¹s clang ( *clang ­S -O0 >>> -emit­llvm a.c* ) >>> * Create obj file ­ using llc - *. /i686-apple-darwin11-llc >>> -filetype=obj -mtriple=thumbv7-windows-msvc -O0 a.s * >>> >>> >>> ... in general this doesn't work. The transformation from C to >>> LLVM IR needs to know the target triple. Try "clang >>> --target=thumbv7-windows-msvc a.c -c -o a.obj"? Since clang has a >...

...lag to enable it. This applies to other >subtarget features defined in ARM.td as well. > >Cheers, >Amara > >On 23 June 2014 11:27, Damanjit Singh <dsingh at adobe.com> wrote: >> How can I ensure use of VFP3 via LLVM target options? I am currently >>using >> thumbv7-windows-msvc as the target triple and default set of >> llvm::TargetOptions. >> >> Thanks, >> Daman >> >> _______________________________________________ >> LLVM Developers mailing list >> LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu >&gt...

Hi *, in the process of improving the ios experience with ghc, I ran into the following issue: the produced llvm code[1] compiles for `armv7-apple-darwin`, unless optimization level is 0, however it fails to compile at all for `armv7-apple-ios`. I was able to reduce the produced code, while retaining the compilation issue on `armv7-apple-ios` to the following sample case: —————————————————————

Hi, Is there support available in llc to convert llvm bytecode to Windows Mobile binary? I have tried triples like arm-pc-win32 , thumbv7-window ... but the object file generated is not getting linked to the windows native project. Any pointers will be greatly appreciated? Thanks, ~rajat -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140516/a...

...tions. I suspect that is what is causing runtime crash for me. Here's what I've tried - Start with a.c (on my linux machine where I have llvm/clang built as of yesterday) int add(int i, int j) {int k = i + j; return k; } clang -S -O0 a.c llc -filetype=obj -mtriple=thumbv7-windows -O0 a.ll I get a.obj from the above steps. I take this a.obj over to my windows 8.1 machine where I have VS2013 update 2 installed I open up a command window and run C:\Users\kck\arm>"c:\Program Files (x86)\Microsoft Visual Studio 12.0\vc\bin\x86_arm\vcvarsx86_arm.bat" I cr...

...ilure so hopefully bugs that would have triggered an assertion will still show up without them on. [3] (reproduced bug triage from the error output) [bug 1] - Decode for T1 B<c> encoding does not sign extend the 8-bit immediate properly reproduce with: echo 0x40 0xd0 | .../llvm-mc -triple thumbv7 -show-encoding -disassemble -show-inst The re-encoding has an incorrect offset when the 6th bit of the immediate is set. A look at the code shows that the decoder uses a C++ cast to signed integer rather than calling the SignExtend function. [bug 2] - STRD with negative offset re-encodes to posit...

...n LLVM sources. I am not much familiar with the LLVM source code, thus would better let the experts to do a correct fix for this issue. 2. There is something strange happening with b.w instruction in the final linked executable. I see that in the disassembly for object code (generated via LLVM with thumbv7-windows-msvc triple), the b.w instruction correctly points to the label I want. But after linking, it now points to some random address. Seems like there are some fixup issues related to b.w instruction. Note that I am using Visual Studio’s linker to create a Window’s phone app. I would really app...

...l don't do anything in their compile phase in any builds, even if they should: http://lab.llvm.org:8011/builders/clang-x64-ninja-win7/ http://lab.llvm.org:8011/builders/clang-ppc64be-linux http://lab.llvm.org:8011/builders/clang-atom-d525-fedora-rel http://lab.llvm.org:8011/builders/clang-cmake-thumbv7-a15 http://lab.llvm.org:8011/builders/clang-s390x-linux At least the ninja-win7 bot used to work fine last week Thu and early Fri, so this looks like a recent regression. The clang_fast bots seem to still work, so we're not flying completely blind, but we for example don't have Windows cov...

Hi all, I was wondering if 'llc' is able to generate 'it' instruction for ARM Cortex-A9 target ? Thanks for your answers Seb

...LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev > Hi Seb, Sure - llc can generate 'IT' instructions, but those are Thumb instructions so will only be generated with the target triple "thumbv7-..." instead of armv7. Cheers, James