similar to: [LLVMdev] Instruction Combining Pass *Breaking* Struct Reads?

On Mon, Jun 29, 2009 at 5:54 AM, Nyx<mcheva at cs.mcgill.ca> wrote: > As you can see, I allocate two structs, one taking 16 bytes (containing two > i64 values), and one taking 12 bytes (containing a pointer and an i64 value, > this is on a 32-bit machine) Are you sure that's right? If the target data specifies that a pointer is 64 bits or that i64 has an alignment of 64 bits,

libswfdec/js/jsobj.c | 56 +++++++++++--------------- libswfdec/swfdec_js_color.c | 14 ------ libswfdec/swfdec_js_connection.c | 14 ------ libswfdec/swfdec_js_movie.c | 22 ---------- libswfdec/swfdec_js_net_stream.c | 14 ------ libswfdec/swfdec_js_video.c | 14 ------

libswfdec/swfdec_as_frame.c | 14 ++ libswfdec/swfdec_as_frame_internal.h | 3 libswfdec/swfdec_as_function.c | 12 -- libswfdec/swfdec_as_interpret.c | 1 libswfdec/swfdec_asbroadcaster.c | 3 test/trace/arguments-5.swf |binary test/trace/arguments-5.swf.trace | 82 +++++++++-------- test/trace/arguments-6.swf |binary

libswfdec/swfdec_as_interpret.c | 3 test/trace/Makefile.am | 18 ++++ test/trace/callmethod-this-5.swf |binary test/trace/callmethod-this-5.swf.trace | 136 +++++++++++++++++++++++++++++++++ test/trace/callmethod-this-6.swf |binary test/trace/callmethod-this-6.swf.trace | 134 ++++++++++++++++++++++++++++++++ test/trace/callmethod-this-7.swf

I tried running nm - D | grep "puts" on the binary compiled by the OCaml compiler. It outputs the following: 08161b00 T camlRuntime__rt_fputs_208 08161a20 T camlRuntime__rt_puts_198 U fputs I'm assuming this means that fputs is linked dynamically, and puts is not. I tried modifying my code to use fputs instead of puts instead, but had no success, however, I still get:

>> You need to figure out how to pass -rdynamic to the linker, like I said before. http://llvm.org/docs/tutorial/OCamlLangImpl7.html mentions it, but I don't know enough about the ocaml build process to say whether that'll work. I believe I'm already doing that, properly by passing -ccopt -rdynamic to ocamlopt: ocamlopt -cc g++ -ccopt -rdynamic -linkall $(LIBFILES) -o alpha

I'm coding a JIT compiler for C source in OCaml, using LLVM. I'm pretty much done with the LLVM code generation. The problem is that I can't seem to call C library functions. I was told that all I needed to do to be able to link with libc functions was to declare them in my module and give them external linkage, but this does not seem to work. Please note that this is a JIT compiler. I

libswfdec/swfdec_as_context.c | 25 + libswfdec/swfdec_as_debugger.h | 8 libswfdec/swfdec_as_interpret.c | 2 libswfdec/swfdec_as_object.c | 6 libswfdec/swfdec_as_script_function.c | 4 test/trace/Makefile.am | 9 test/trace/definefunction2-registers-5.swf

Hi! I have a little problem using LLVM and will be happy to get a solution. I need to handle in C++ code an uncaught unwind instruction while calling JIT (now I get segfault). I mean something like nonexistent ExecutionEngine::invokeFunction instead of callFunction. Setting llvm::JITExceptionHandling to true and enclosing the JIT-call within try/catch block does not help here, because there is no

libswfdec/swfdec_as_frame.c | 144 +++++++-------- libswfdec/swfdec_as_interpret.c | 7 libswfdec/swfdec_as_super.c | 1 libswfdec/swfdec_video_movie_as.c | 2 test/trace/Makefile.am | 15 + test/trace/definefunction2-arguments-registers.swf

On Mon, Apr 5, 2010 at 3:27 PM, Nyx <mcheva at cs.mcgill.ca> wrote: > >>> You need to figure out how to pass -rdynamic to the linker, like I > said before. http://llvm.org/docs/tutorial/OCamlLangImpl7.html > mentions it, but I don't know enough about the ocaml build process to > say whether that'll work. > > I believe I'm already doing that, properly by

oops... so how can unwind stack up to invoke call? Is there an alternative to establish a custom exception handling? 2011/11/7 Duncan Sands <baldrick at free.fr> > >> Hi Semion, the unwind instruction has been removed from LLVM. Also, the >> JIT >> and code generators never supported it: it never unwound the stack, it >> just >> resulted in a nasty crash.

In C, on Linux, you would have to link your JIT compiler with -rdynamic or -Wl,-export-dynamic (they're synonyms). I'm not sure what the equivalent linker flag is for OCaml. You can see what symbols are available to the JIT with `nm -D`. On Sun, Apr 4, 2010 at 8:41 AM, Nyx <mcheva at cs.mcgill.ca> wrote: > > I'm coding a JIT compiler for C source in OCaml, using LLVM.

That sounds rather cumbersome, is there no simpler way to get the actual size of a struct? John Criswell wrote: > > Nyx wrote: >> Hello, >> >> I would just like to ask if it's possible to explicitly free allocas. >> This >> is because I need to call functions that take structs of different sizes >> as >> input, (possibly inside of loops) and I

I am interested in writing a JIT that makes use of on-stack replacement. This essentially means that the JIT must be able to compile new versions of already compiled functions (eg: more optimized versions) and ensure that the code for the new functions is executed. I was wondering if LLVM offers any support for this. Suppose a function f calls a function g, and f is recompiled while g is running,

libswfdec/swfdec_as_frame.c | 32 ++++++++-------- libswfdec/swfdec_as_function.c | 13 ++++-- libswfdec/swfdec_as_function.h | 4 +- libswfdec/swfdec_as_interpret.c | 12 ++++-- libswfdec/swfdec_as_native_function.c | 3 + libswfdec/swfdec_as_object.c | 27 ++++++++++++-

Hello, I would like to know if there is an instruction to convert values from the Int1 type to the Double type in LLVM. I would like to achieve the equivalent of casting a bool value to a double value in C++. Doing the simple CreateSIToFP or CreateUIToFP does not work, it throws an assertion ("invalid cast"). I simply want to avoid branching it's not necessary. What's the

I have most of the code working but I'm running into two issues: 1. I'm not sure exactly how to return a structure on the stack. Right now, I'm allocating one with alloca, but it seems I can only return a pointer to it, not the structure itself. Is there any way to dereference the pointer? 2. On the calling side, I get a structure as a return value. However, it seems GEP is

But, which optimization pass will take advantage of those flags? As for nounwind, that means "can't throw an exception"? - Maxime John McCall-2 wrote: > > Nyx wrote: >> Hello, >> >> I'm in a situation where my code is calling many native functions. >> Sometimes, these calls are simply calls to static "accessor" methods that >>

I'm designing a JIT compiler and I have a potentially problematic situation. The functions I compile may need to create/access an object during their execution. In the case where this object won't be needed, I'd rather avoid generating code to creating the object, as this is a slight performance waste. Unfortunately, it's rather difficult to know whether this will be the case