similar to: [ARM/Thumb] Make a function in arm while in Thumb triple

On 18 July 2012 15:24, salvatore benedetto <salvatore.benedetto at gmail.com> wrote: > I'm not sure how to interpret the above output, but I don't understand > why if say -triple armv4t-none--gnueabi . Ok, we're getting there... ;) I think these errors are due to Clang not finding the libraries/includes/etc for the target you're building. If you have

Hi Andrea, That is because the LR is the fixed register as per the http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042e/IHI0042E_aapcs.pdf and out_char() function is not the leaf function ,Hence compiler tends to save and restore the LR and the save and restore of register r11 is to align stack for 8 bytes as per ARM EABI. Thanks ~Umesh On Tuesday, October 15, 2013, Umesh Kalappa

On 18 July 2012 14:57, salvatore benedetto <salvatore.benedetto at gmail.com> wrote: > $ clang -march=armv7-m -mfloat-abi=soft -ccc-host-triple > armv7m-none-gnueabi testReference.cpp -c > fatal error: error in backend: CPU: 'cortex-m3' does not support ARM > mode execution! Ah, yes! Try: $ clang -ccc-host-triple thumbv7m-none-gnueabi testReference.cpp -c Cross

I'm trying to find a way to emulate a floating point instruction, say a floating point add. My understanding is that in order to do that I need to execute setOperationAction(ISD::FADD, (MVT::f32, Expand); setOperationAction(ISD::FADD, (MVT::f64, Expand); in MyTargetISelLowering.cpp, MyTargetLowering::MyTargetLowering(...). However for some reason I'm still seeing a floating point add in

On 8 February 2013 14:28, David Given <dg at cowlark.com> wrote: > Debian's clang packages are totally broken on armhf --- the compiler > emits a confused warning about the platform being unrecognised, and then > generates softfloat code --- so I was wondering about LLVM itself. I'm using Ubuntu on Pandas and Chromebooks and LLVM itself behaves well, with the right set of

Dear ML, Anton, Thank you for your answer and your help. I had a look at ARM.td of LLVM 2.6 (in lib/Target/ARM..) where I found following definitions: // V4T Processors. def : ProcNoItin<"arm7tdmi", [ArchV4T]>; def : ProcNoItin<"arm7tdmi-s", [ArchV4T]>; def : ProcNoItin<"arm710t", [ArchV4T]>; def :

Hello list I think I really finally found a way to crossbuild a binary for ARM using Clang/llvm. This message would be a documentation for someone who may concern for the same issue with me. - Target : TOSHIBA AC100 / Ubuntu 12.04 (https://wiki.ubuntu.com/ARM/** TEGRA/AC100 <https://wiki.ubuntu.com/ARM/TEGRA/AC100>) - Host : i386 Desktop PC / Ubuntu 12.04 - Toolchain on host : sudo

Renato Golin wrote: [...] > Try setting armv7a-unknown-linux-gnueabihf and see if it works better. No, that doesn't work either. [...] > JIT was never the forte of ARM and I haven't tried yet, but I doubt > it'll be any Debian misconfiguration. The whole architecture > configuration is a bit odd... Debian's clang packages are totally broken on armhf --- the compiler

On 11-05-16 09:21 AM, Koan-Sin Tan wrote: > splited patches and test cases > > mc-elf-thumbfunction-bit.diff: for 1 > mc-elf-arm-backend-bl-blx-sign-bit.diff: for 2. > mc-elf-thumb-bl-blx-relocation-table-entry.diff: for 3. > mc-elf-cpu-xscale-attributes.diff: for 4. > > elf-thumbfunc.s: test case for 1 > elf-thumbfunc-reloc.ll: test case for 2 and 3 >

Umesh, Makes some sort of sense to me, OTOH: If instead of choosing r11 as a "dummy" to align the stack we had chosen some other register in the range r0-r7 then we could have emitted the PUSH encoding T1 (2 bytes opcode) as opposed to the encoding T2 (which is a 4 bytes opcode). A On Tue, Oct 15, 2013 at 2:59 AM, Umesh Kalappa <umesh.kalappa0 at gmail.com>wrote: > Hi

On Tue, May 17, 2011 at 12:29 AM, Rafael Avila de Espindola <rafael.espindola at gmail.com> wrote: > On 11-05-16 09:21 AM, Koan-Sin Tan wrote: >> >> splited patches and test cases >> >> mc-elf-thumbfunction-bit.diff: for 1 >> mc-elf-arm-backend-bl-blx-sign-bit.diff: for 2. >> mc-elf-thumb-bl-blx-relocation-table-entry.diff: for 3. >>

> Thanks for the review and checkin. Thanks for the patch! > Regarding elf-thumbfunc-reloc.ll, it seems to me that current ARMAsmParser > doesn't recognize "(PLT)", so something like "bl foo(PLT)" doesn't work > consequently. And I don't know how to write .s to test this without (PLT). NP. Can you just add that as a FIXME in elf-thumbfunc-reloc.ll?

Hello everyone, this is most likely Arm specific, but could affect other targets where there is a somewhat complex relationship between the triple and mcpu option. At present when clang is used as a linker driver for the gold-plugin and when using and an explicit -mcpu is not given to clang, then clang will always generate a -Wl,-plugin-opt=mcpu=<default CPU> where the default CPU is based

Hi, I do not get your result. Do I miss something? $COMP_ROOT/clang++ --target=arm-arm-eabihf -march=armv8.2a+fp16 arm.cpp -S -o - -O3 .text .syntax unified .eabi_attribute 67, "2.09" .eabi_attribute 6, 14 .eabi_attribute 7, 65 .eabi_attribute 8, 1 .eabi_attribute 9, 2 .fpu crypto-neon-fp-armv8 .eabi_attribute 12, 4

Dear list, git checkout llvmorg-8.0.0 -b llvm8.0 cmake -G "Unix Makefiles" ../llvm-project/llvm -DCMAKE_BUILD_TYPE=Debug -DLLVM_ENABLE_PROJECTS="clang;lld" -DLLVM_TARGETS_TO_BUILD="X86;NVPTX;AMDGPU;ARM;AArch64" [arm.cpp] #define vst4_lane_f16(__p0, __p1, __p2) __extension__ ({ \ float16x4x4_t __s1 = __p1; \ __builtin_neon_vst4_lane_v(__p0, __s1.val[0],

Hi Journeyer First, thank you so much for your updates on your experiments. I am currently following your steps but have found myself stuck with the following error: /usr/lib/gcc/arm-linux-gnueabi/4.6/../../../../arm-linux-gnueabi/bin/ld: this linker was not configured to use sysroots clang: error: linker command failed with exit code 1 (use -v to see invocation) I used the command string you

Hello > ./clang -v -emit-llvm -ccc-host-triple arm-none-linux-gnueabi > -I/home/hum/Documents/Projects/llvm_clang/gnuarm-4.0.2/arm-elf/include > -L/home/hum/Documents/Projects/llvm_clang/gnuarm-4.0.2/arm-elf/bin hello.c You forgot about sysroot here. > /home/hum/Documents/Projects/llvm_clang/gnuarm-4.0.2/arm-elf/bin/ld: > unrecognised emulation mode: armelf_linux_eabi >

I'm trying to find a way to get/set the module attributes as printed in a module dump: attributes #0 = { noinline nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"

Hello Gergö, Joerg and people on our list With your kind answer, I tried to build a hello world program for ARM(arm-none-linux-gnueabi) on my x86-64 PC. Thank you we verified the generated bitcode. The only thing remained is linking. Let me brief what I did so far. 1. Built Clang/llvm in a way explained in http://clang.llvm.org/get_started.html on Ubuntu 11.10 x86-64 PC 2. Downloaded gcc-4.0

Hi andrea, R11 treated as frame pointer at arm backend , which is fixed again . Thanks Umesh On Tuesday, October 15, 2013, Andrea Mucignat <andrea at nestlabs.com> wrote: > Umesh, > Makes some sort of sense to me, OTOH: > If instead of choosing r11 as a "dummy" to align the stack we had chosen some other register in the range r0-r7 then we could have emitted the PUSH