similar to: [LLVMdev] broken Atomic.cpp on Darwin

Thanks. I think I am using Apple GCC 4.2. i686-apple-darwin9-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5566) Should I use something else for LLVM? - xi On Sun, May 24, 2009 at 1:20 AM, Owen Anderson <resistor at mac.com> wrote: > > On May 23, 2009, at 9:41 PM, Xi Wang wrote: > > There is no __sync_synchronize or __sync_val_compare_and_swap on Mac > OS X.  One might use

On May 23, 2009, at 9:41 PM, Xi Wang wrote: > There is no __sync_synchronize or __sync_val_compare_and_swap on Mac > OS X. One might use OSMemoryBarrier or OSAtomicCompareAndSwap32 > instead. The patch is attached. Actually, __sync_synchronize and __sync_val_compare_and_swap DO exist on Darwin, but only if you use Apple's GCC 4.2 (or later), just as it is on Linux. We always

No, that should work fine, and is exactly what I use to compile atomics on Darwin. --Owen On May 23, 2009, at 11:02 PM, Xi Wang wrote: > Thanks. I think I am using Apple GCC 4.2. > > i686-apple-darwin9-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5566) > > Should I use something else for LLVM? > > - xi > > On Sun, May 24, 2009 at 1:20 AM, Owen Anderson <resistor at

Hi, Some time in the last few weeks I noticed my cmake build of svn-trunk on powerpc-darwin8 start to warn about atomics being unavailable and thus building thread-unsafe. I just looked into it and found an easy solution, using the atomic functions in <libkern/OSAtomic.h> in /usr/include. The attached patch does this and also modifies the cmake and autoconf tests to 'pass'

llvm/lib/System/Atomic.cpp contains the call to __sync_val_compare_and_swap that lowers to the missing __sync_val_compare_and_swap_4 GCC intrinsic. The same file contains several other __sync_* calls and all these has to be implemented if we want to be able to compile llvm on linux/ARM with GCC versions below < 4.4 xerxes at labbserver:~/llvm$ grep _sync lib/*/* lib/System/Atomic.cpp:

Why is his configure not catching this? It tests for the linkability of these functions on the target arch, and should be detecting their absence if that is actually the case. --Owen On Jul 1, 2009, at 12:50 AM, Xerxes Rånby wrote: > llvm/lib/System/Atomic.cpp contains the call to > __sync_val_compare_and_swap that lowers to the missing > __sync_val_compare_and_swap_4 GCC

On Feb 15, 2008, at 2:29 PM, Andrew Lenharth wrote: > On 2/15/08, Andrew Lenharth <andrewl at lenharth.org> wrote: >> I'll take a hack at the front end support for >> __sync_synchronize after this goes in. > > This is the gcc side of the patch. GCC 4.2 compiles this to a no-op on x86: void foo() { __sync_synchronize(); } Are you seeing different behavior?

Attached is the target independent llvm.atomic.barrier support, as well as alpha and x86 (sse2) support. This matches Chandler's definitions, and the LangRef patch will just restore that. Non-sse2 barrier will be needed, I think it is "lock; mov %esp, %esp", but I'm not sure. Any objections? I'll take a hack at the front end support for __sync_synchronize after this

On 2/15/08, Andrew Lenharth <andrewl at lenharth.org> wrote: > I'll take a hack at the front end support for > __sync_synchronize after this goes in. This is the gcc side of the patch. Index: gcc/llvm-convert.cpp =================================================================== --- gcc/llvm-convert.cpp (revision 46956) +++ gcc/llvm-convert.cpp (working copy) @@

Hi all, I ran ../llvm/configure CC=g44 CXX=g++44 and the exit code was 0, but in config.log I found errors (mostly about missing files) and warnings (mostly about conflicts in builtin functions). I thought maybe the fact I later get compilation errors when running make is related to these. How do I correct these errors? or can they be ignored? The full list of errors from config.log is

Nick Lewycky wrote: > 2009/6/30 Andrew Haley <aph at redhat.com <mailto:aph at redhat.com>> > > Nick Lewycky wrote: > > I'm seeing this new build failure, starting some time yesterday on > ARM: > > Yes. It's just a matter of defining __sync_val_compare_and_swap_4: > >

Hello, Could you look at current implementation of AtomicIncrement/AtomicDecrement? I think there is a error in version for MSVC. -- Иван Сорокин mailto:sorokin at rain.ifmo.ru -------------- next part -------------- A non-text attachment was scrubbed... Name: diff Type: application/octet-stream Size: 827 bytes Desc: not available URL:

> GCC 4.2 compiles this to a no-op on x86: > > void foo() { > __sync_synchronize(); > } > > Are you seeing different behavior? What am I missing here? Maybe the processor does a memory barrier when it executes a call instruction. Ciao, Duncan.

2009/6/30 Andrew Haley <aph at redhat.com> > Nick Lewycky wrote: > > I'm seeing this new build failure, starting some time yesterday on ARM: > > > > make[3]: Entering directory `/home/nlewycky/llvm/tools/llvmc/driver' > > llvm[3]: Linking Debug executable llvmc > > g++ -DLLVMC_BUILTIN_PLUGIN_1=Base -DLLVMC_BUILTIN_PLUGIN_2=Clang >

Hi all: I am working on a project using llvm and we need to deal with multithreaded applications. I wanted to know if there was a C front end for llvm that could parse multithreaded applications? I tried llvm-gcc (4.2) and could not get it to work. Is there an extra parameter that I need to pass or something ? Thanks a lot for your help. Regards -- -- Aparna Graduate Student Department

On Apr 17, 2014, at 11:09 AM, Xinliang David Li <xinliangli at gmail.com> wrote: > > On Thu, Apr 17, 2014 at 10:58 AM, Duncan P. N. Exon Smith <dexonsmith at apple.com> wrote: > > On 2014-Apr-17, at 10:38, Xinliang David Li <xinliangli at gmail.com> wrote: > > > > > Another idea is to use stack local counters per function -- synced up with global

Hi yes, I'm asking for any advice, I want to implement multithreaded code generator in LLVM. tnx --- On Tue, 10/5/10, Duncan Sands <baldrick at free.fr> wrote: From: Duncan Sands <baldrick at free.fr> Subject: Re: [LLVMdev] Multithreaded code generation To: llvmdev at cs.uiuc.edu Date: Tuesday, October 5, 2010, 10:50 AM Hi Hamed, > I want to use LLVM to automatically

I'm working on getting the LLVM/projects/Test-Suite/UnitTest to compile for a target that I am developing. There is an example: AtomicOps, that uses calls to: __sync_fetch_and_add __sync_val_compare_and_swap __sync_lock_test_and_set These get converted into llvm IR operations like: atomicrmw cmpxchg Is there any way to keep these as function calls, as they are easier to map to the

I noticed that the statically linked ogg/vorbis libraries for Windows are multithreaded. I want to link them into a non-multithreaded application, so I'm considering recompiling them to use the non-multithreaded C runtime. Is this feasible, or do libogg and libvorbis rely on multithreading? <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage:

Hi I want to use LLVM to automatically translate sequential codes to multithreaded codes for execution on multicore processors. How should I start? Best Regards. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20101004/db9ce7bf/attachment.html>