Hello,
I am trying to use the LLVM classes (with Modules in memory) to represent some
programs that use
the void* type but I am having some problems handling that type.
If I use WriteBytecodeToFile, I receive this error:
Assertion `slot != -1 && "Module broken!"`
If I save the module directly with PrintModulePass, it generates the .ll file
fine, but if I try
to compile it with llvm-as, as soon as it finds 'void *' it complains
that it was expecting an "("
instead of an "*". I suppose that the correct syntax is something like
this: 'void (sbyte *)*'
For example, these lines can cause the error:
%castinst1 = cast typeXYZ* %var to void* ; <void*> [#uses=1]
or
%astruct = type { %int*, %void*, *astruct }
My question is, how can I generate 'void (sbyte*)*' using the LLVM
classes?
Thanks!
No value can be stored in a void and a function returning void* points to nowhere in particular. I think what you are really wanting to do here is use an opaque type. The other alternative is to simply use sbyte*. Remember, this isn't C even though some of the names/ideas look familiar. Reid. On Fri, 2005-06-10 at 15:32 -0700, Ricardo wrote:> Hello, > > I am trying to use the LLVM classes (with Modules in memory) to represent some programs that use > the void* type but I am having some problems handling that type. > If I use WriteBytecodeToFile, I receive this error: > > Assertion `slot != -1 && "Module broken!"` > > If I save the module directly with PrintModulePass, it generates the .ll file fine, but if I try > to compile it with llvm-as, as soon as it finds 'void *' it complains that it was expecting an "(" > instead of an "*". I suppose that the correct syntax is something like this: 'void (sbyte *)*' > > For example, these lines can cause the error: > > %castinst1 = cast typeXYZ* %var to void* ; <void*> [#uses=1] > > or > > %astruct = type { %int*, %void*, *astruct } > > My question is, how can I generate 'void (sbyte*)*' using the LLVM classes? > > Thanks! > > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://mail.cs.uiuc.edu/mailman/listinfo/llvmdev-------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20050610/e2498990/attachment.sig>
On Fri, 10 Jun 2005, Reid Spencer wrote:> No value can be stored in a void and a function returning void* points > to nowhere in particular. I think what you are really wanting to do here > is use an opaque type. The other alternative is to simply use sbyte*. > > Remember, this isn't C even though some of the names/ideas look > familiar.I would recommend using 'sbyte*' instead of opaque*. Reid is right, void should only be used as a function return type. There will eventually be an assertion to enforce this, but the SparcV9 backend currently abuses void*'s, so we cannot add the assertion until it is fixed. -Chris> Reid. > > On Fri, 2005-06-10 at 15:32 -0700, Ricardo wrote: >> Hello, >> >> I am trying to use the LLVM classes (with Modules in memory) to represent some programs that use >> the void* type but I am having some problems handling that type. >> If I use WriteBytecodeToFile, I receive this error: >> >> Assertion `slot != -1 && "Module broken!"` >> >> If I save the module directly with PrintModulePass, it generates the .ll file fine, but if I try >> to compile it with llvm-as, as soon as it finds 'void *' it complains that it was expecting an "(" >> instead of an "*". I suppose that the correct syntax is something like this: 'void (sbyte *)*' >> >> For example, these lines can cause the error: >> >> %castinst1 = cast typeXYZ* %var to void* ; <void*> [#uses=1] >> >> or >> >> %astruct = type { %int*, %void*, *astruct } >> >> My question is, how can I generate 'void (sbyte*)*' using the LLVM classes? >> >> Thanks! >> >> _______________________________________________ >> LLVM Developers mailing list >> LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu >> http://mail.cs.uiuc.edu/mailman/listinfo/llvmdev >-Chris -- http://nondot.org/sabre/ http://llvm.cs.uiuc.edu/