similar to: BUGS n code generated for target i386 compiling __bswapdi3, and for target x86-64 compiling __bswapsi2()

bswapdi2 for i386 is correct Bits 31:0 of the source are loaded into edx. Bits 63:32 are loaded into eax. Those are each bswapped. The ABI for the return is edx contains bits [63:32] and eax contains [31:0]. This is opposite of how the register were loaded. ~Craig On Sun, Nov 25, 2018 at 10:36 AM Craig Topper <craig.topper at gmail.com> wrote: > bswapsi2 on the x86-64 isn't using

I just compiled the two attached files in 32-bit mode and ran it. It printed efcdab8967452301. I verified via objdump that the my_bswap function contains the follow assembly which I believe matches the assembly you linked to on godbolt. _my_bswap: 1f70: 55 pushl %ebp 1f71: 89 e5 movl %esp, %ebp 1f73: 8b 55 08 movl 8(%ebp), %edx 1f76: 8b 45 0c movl 12(%ebp), %eax 1f79: 0f c8

I am currently trying to compile a pretty simple program to work on an experimental board. It contains an (FPGA-version of) an ARMv4 processor. So basically, I try this (on my Ubuntu 18.04.1 LTS): clang -v --target=arm-none-eabi -c barehello.c -o barehelloCLANG.o clang -v --target=arm-none-eabi -c io.c -o io.o clang -v --target=arm-none-eabi barehelloCLANG.o io.o -o helloCLANGstatic -static

Hello, on the problems cross-building compiler-rt: Tried to follow https://llvm.org/docs/HowToCrossCompileBuiltinsOnArm.html which lead to this cmake: cmake -G "Ninja" ../llvm/projects/compiler-rt/ -DCOMPILER_RT_BUILD_BUILTINS=ON -DCOMPILER_RT_BUILD_SANITIZERS=OFF -DCOMPILER_RT_BUILD_XRAY=OFF -DCOMPILER_RT_BUILD_LIBFUZZER=OFF -DCOMPILER_RT_BUILD_PROFILE=OFF

Hello again! Tried out the small Hello World Setup, worked as intended: root at christian-forschung-virtual-machine:/home/progs# clang -v --target=arm-linux-gnueabihf hello.c -o hello -fuse-ld=lld clang version 8.0.0 (https://git.llvm.org/git/clang.git/ a152c7a4b7ba8f4cb9532ead9a38a7121db43d50) (https://git.llvm.org/git/llvm.git/ 1959ce6f3e01241919968ac1911fd45660239d23) Target:

Hello again Christian, I've posted https://reviews.llvm.org/D55709 to see if we can get the documentation on how to cross-compile compiler-rt improved. I'll be out of office until next year so I may be a bit slow to respond to any follow ups. Peter On Thu, 13 Dec 2018 at 17:10, Peter Smith <peter.smith at linaro.org> wrote: > > Hello Christian, > > I've just

Hello Peter and Lists, thanks a lot, that way it worked out! The final cmake was cmake -G "Ninja" ../llvm/projects/compiler-rt/ -DCOMPILER_RT_BUILD_BUILTINS=ON -DCOMPILER_RT_BUILD_SANITIZERS=OFF -DCOMPILER_RT_BUILD_XRAY=OFF -DCOMPILER_RT_BUILD_LIBFUZZER=OFF -DCOMPILER_RT_BUILD_PROFILE=OFF -DCMAKE_C_COMPILER=/usr/local/myclang/bin/clang -DCMAKE_AR=/usr/local/myclang/bin/llvm-ar

Hello Christian, I've put some comments inline, On Sun, 3 Feb 2019 at 13:11, Christian Richter <christian.richter at hsu-hh.de> wrote: > > Hello again, > > so after I successfully build the compiler-rt for armv6 I tried to > actually use it in compiling a small helloworld for a baremetal arm > (consisting of barehelloCLANG.c and a small io.h + io.c) , but the >

Hello Christian, I'd expect that adding the library paths (-L) from gcc -v should fix the unable to find -lc, -lm but it won't fix the -lclang_rt.builtins-armv6m.a . To get clang_rt.builtins-armv6m.a you will need to cross compile compiler-rt for v6m and copy it to /usr/local/myclang/lib/clang/8.0.0/lib/baremetal . Beware that building compiler-rt for v6m does need quite a bit of fighting

Hello Christian, I reran my script with a similar cmake command to yours. After the build finished the following command from the build directory gave me: find . -name \*builtins.a ./lib/clang/9.0.0/armv6m-none-eabi/lib/libclang_rt.builtins.a ./lib/clang/9.0.0/armv7m-none-eabi/lib/libclang_rt.builtins.a ./lib/clang/9.0.0/armv7em-none-eabi/lib/libclang_rt.builtins.a I hope you see something like

Hi, I've some troubles setting up the dict based quota plugin for mdbox, it always returns a error when lmtp tries to deliver an e-mail: Apr 8 12:40:16 mb07 dovecot: lmtp(3001, asmarre at ull.es): Error: fstat(/sharedfs/10.4.1.107/ull.es/54/asmarre/dovecot-quota.lock) failed: No such file or directory Apr 8 12:40:16 mb07 dovecot: lmtp(3001, asmarre at ull.es): Error: file dict commit:

share/compat.h contains the following code: /* adjust for compilers that can't understand using LLU suffix for uint64_t literals */ #ifdef _MSC_VER #define FLAC__U64L(x) x #else #define FLAC__U64L(x) x##LLU #endif I tested MSVS 2005 and indeed it doesn't support LLU suffix, but it can compile a code with ULL suffix. Also, http://gcc.gnu.org/onlinedocs/gcc/Long-Long.html mentions ?ULL?

I was able to get the loop to increment from -999 to 0 using IR directly. That got rid of the cmpq. The carry i was after was able to be obtained using the intrinsic @llvm.uadd.with.overflow.i64, however there is no way to add with carry and have it realise that the resulting *carry out* cannot exceed 1. It actually writes the carry to a byte, and then uses logical operations on it, which slows

On 12 June 2010 00:51, Eli Friedman <eli.friedman at gmail.com> wrote: > On Fri, Jun 11, 2010 at 3:28 PM, Bill Hart <goodwillhart at googlemail.com> wrote: >> Hi Eli, >> >> On 11 June 2010 22:44, Eli Friedman <eli.friedman at gmail.com> wrote: >>> On Fri, Jun 11, 2010 at 10:37 AM, Bill Hart <goodwillhart at googlemail.com> wrote:

Hi Bill- I think, ideally, the backend would be able to match arbitrary-precision arithmetic to add-with-carry or subtract-with-borrow through i65/i33. That would remove the need for the overflow intrinsics entirely. Alistair On 13 Jun 2010, at 02:27, Bill Hart wrote: > I was able to get the loop to increment from -999 to 0 using IR > directly. That got rid of the cmpq. > > The

Hi, samba 2.2.8a freshly compiled cups 1.1.19final-1 (debian) while using cupsaddsmb, all runs well until adddriver, when rpcclient returns a cryptic NT_STATUS_NO_SUCH_DEVICE. I've followed the SambaPrintHowto 3.0 from 7.11.6.1 to 7.11.6.6, and it fails on the latest as well. Here is some more information. ===8<=== cupsaddsmb -a -v Running command: smbclient //localhost/print\$ -N

Hello, Apologies if this question has already arised, hope you can help me to the find the solution to this or point the place to look at. I have a multidimensional piece-wise regression linear problem, i.e. to find not only the regression coefficients for each "interval" but also the beginning and ends of the intervals. To simplify it to the one dimensional case and two intervals,

In DataTypes.h starting on line 121 are these lines: #define INT8_C(C) C #define UINT8_C(C) C #define INT16_C(C) C #define UINT16_C(C) C #define INT32_C(C) C #define UINT32_C(C) C ## U #define INT64_C(C) ((int64_t) C ## LL) #define UINT64_C(C) ((uint64_t) C ## ULL) They are conflicting with the cstdint when we have updated headers in our MSVC build. I could have sworn I talked about this

Hello List, I am on the hook to instrument a piece of legacy LLVM IR code, and then we are planning to feed to the SeaHorn framework for some model checking tasks. After the instrumentation, I tried to use llc (version 3.9) to compile the IR code, and it works fine. However, when I try to use llc (version 3.8.1, the default llvm version of SeaHorn) to compile the IR code, it shows the following

>> Are you sure there isn't any test coverage? As far as I can tell, the tests from https://reviews.llvm.org/rL133503 are still in the tree. I looked at those, but none of them include the full pattern that decomposes into bswap and rol. I debugged through the X86 bswap.ll test and verified none of those cases make it through MatchBSwapHWord (they get handled in MatchBSwapHWordLow