similar to: [LLVMdev] Current state of the lld project (support for writing .dll files)

Hello list, I got a simple test case to reproduce a crash in code that has been generated by llvm. The code calls into the "putchar" function from LIBCMT.LIB. It works when creating an .exe file, but not when creating a .dll file and calling into an exported function. First, let me show how the code works as an .exe: > cat callPutchar.ll ; ModuleID = 'test' declare i32

Hello list, on the lld main page at http://lld.llvm.org, it says: "lld is in its early stages of development. It can currently self host on Linux x86-64 with -static." Is this information up-to-date? I'm interested in using lld on Windows (win32 on PC) with object files created by llvm (no clang involved). Is that possible at this time? It would be awesome to be able to create a

2013/10/31 Daniel Albuschat <d.albuschat at gmail.com>: > on the lld main page at http://lld.llvm.org, it says: > > "lld is in its early stages of development. > It can currently self host on Linux x86-64 with -static." > > Is this information up-to-date? I made a quick test on a Windows 8 64bit system: test.c: int main () { return 42; } > clang -c test.c

Hey Jeremy, (putting the discussion back to the list.) 2013/12/8 Jeremy Lakeman <Jeremy.Lakeman at gmail.com>: > If I run your demo exe it crashes, if I re-link the dll with VS 2010 it > errors gracefully; > > runtime error R6030 > - CRT not initialized > > putchar is a c runtime function. > I'm betting that your exe doesn't initialise the runtime library?

Hey there, lld fails to build on Visual Studio 2013 because of ErrorOr<void>. For example, ErrorOr<void> is used in InputGraph.h as the return type of InputGraph::reset. Inside of ErrorOr, there is: typedef typename remove_reference<T>::type &reference As T is void, and remove_reference <T>::type results in void, the typedef expands to: typedef void & reference,

Hello, using the LLVM API, I've build one very simple function that adds two ConstantInts and returns the result. I noticed that, when I emit IR code, it is optimized to a simple "ret i16 42" when I add 40 and 2. I'd like to see the operations that are necessary to compute the result, though. Can I somehow disable this optimization in the pass, leading to more verbose IR code?

I think I removed all uses of ErrorOr<void>. Can you try updating? On 15 November 2013 12:09, Daniel Albuschat <d.albuschat at gmail.com> wrote: > Hey there, > > lld fails to build on Visual Studio 2013 because of ErrorOr<void>. > For example, ErrorOr<void> is used in InputGraph.h as the return type > of InputGraph::reset. > Inside of ErrorOr, there is:

2015-02-17 15:59 GMT+01:00 Tom Stellard <tom at stellard.net>: > On Mon, Feb 16, 2015 at 10:38:52PM +0100, Daniel Albuschat wrote: > > Hello there, > > > > tl;dr: > > Is it a known behaviour that using llvm-3.4 and llvm-3.6 at the same time > > in the same process (while llvm-3.6 is used from a linked shared library > > and llvm-3.4 is dlopen'ed -

IRBuilder is a templated class, and one of the template arguments is the constant folder to use. By default it uses the ConstantFolder class which does target-independant constant folding. If you want to disable constant folding you can specify the NoFolder class instead, i.e. declare the builder as follows: IRBuilder<true, llvm::NoFolder> builder(body) On 26 Nov 2013, at 19:23, Daniel

From: David H?rdeman <david@2gen.com> if a partition has been used as lvm2 and has not been cleared with pvremove, fstype would recognise the ext3 partition as lvm2. workaround that by detection lvm2 after ext3. Bonuspoint remove long fs list as this one just generates conflicts. Signed-off-by: David H?rdeman <david@2gen.com> Signed-off-by: maximilian attems

> Nope, llvm's .s output is only compatible with GAS and other at&t syntax > assemblers.  It turns out that MASM syntax is highly ambiguous and MASM is > not production quality for use by a compiler.  This is why visual studio > doesn't go through it.  Long term, we'd like LLVM to be able to write out .o > files directly, if you're interested in adding PECOFF

Hello there, tl;dr: Is it a known behaviour that using llvm-3.4 and llvm-3.6 at the same time in the same process (while llvm-3.6 is used from a linked shared library and llvm-3.4 is dlopen'ed - with a strange detail: Especially if -rdynamic is used when linking the program). If so, is there a workaround? If not, can it be fixed in llvm-3.6? Long story: I am writing a program that creates

Before, in my "Hard Problem" email I was trying to communicate a design issue were trying to solve with Xen. This is what we need to do: 1) Deploy 24 Windows XP VMs in parallel. 2) Boot them from a shared Windows XP C: drive. 3) Since this is a read-only shared image we obviously can''t have multiple VM''s writing to it. 4) All writes to the boot image for logging,

Before, in my "Hard Problem" email I was trying to communicate a design issue were trying to solve with Xen. This is what we need to do: 1) Deploy 24 Windows XP VMs in parallel. 2) Boot them from a shared Windows XP C: drive. 3) Since this is a read-only shared image we obviously can''t have multiple VM''s writing to it. 4) All writes to the boot image for logging,

Hi Rui, Not sure if you have seen this problem, but I have been running into this problem when I run the lld tests and the failure occurence is once in 5 times. lld: ../tools/lld/lib/Core/Resolver.cpp:402: void lld::Resolver::deadStripOptimize(): Assertion `symAtom' failed. #0 0x4b05ae llvm::sys::PrintStackTrace(_IO_FILE*)

Hello everyone, I was following the discussion, but I have to admit, that my skills aren't high enough to follow you guys. For my current exception problem, I don't have to stick around with the PECOFF format, so I used clang to don't compile to a PECOFF, but to a ELF file. Interesting, now I'm missing the functions: __cxa_allocate_exception __cxa_throw _ZTI I loaded the DLL

+ Nick Rui, Does PECOFF writer need the filename in the writer as well, I am not sure if linker scripts are supported with PECOFF though. If PECOFF also needs it, I think it makes sense to store the filename in the Atom as the native format needs to store that information. The only option for the ELF writer to know this information is to use References if other flavors dont need the

On Jan 21, 2010, at 2:01 PM, Jim Crafton wrote: >> Nope, llvm's .s output is only compatible with GAS and other at&t >> syntax >> assemblers. It turns out that MASM syntax is highly ambiguous and >> MASM is >> not production quality for use by a compiler. This is why visual >> studio >> doesn't go through it. Long term, we'd like

Historically? I implemented support for exceptions back in LLVM 3.3, before LLVM had an implementation of a Windows unwinder. Currently? As recent as LLVM 4.0, I don't think the JIT was fully capable of handling COFF files, and LLVM wouldn't emit the correct sections (with the COFF-formatted unwind tables) when used in ELF mode. The prolog is known to be standard since Julia disables FPO

I'm copying some LLD code into my codebase like this: // workaround for LLD not exposing ability to convert .def to .lib #include <set> namespace lld { namespace coff { class SymbolBody; class StringChunk; struct Symbol; struct Export { StringRef Name; // N in /export:N or /export:E=N StringRef ExtName; // E in /export:E=N SymbolBody *Sym = nullptr; uint16_t Ordinal