llvm dev - Feb 2012 - [LLVMdev] Invalid bitcode signature

Bill Wendling-3 wrote:
> 
> The error is coming from the bit-code reader. Make sure that you generated
> the file with '-emit-llvm' (i.e., it's not an object file) and
that it's
> the binary version of the bit-code file, not the text version.
> 
> And, llvm-gcc? really? :-)
> 
> 
Is there no way that the API can generate valid bitcode?

And no, not really llvm-gcc, I'm not sure why I said that, haha :)
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Hi Fraser,

On 04/02/12 12:09, Fraser Cormack wrote:
>
>
> Bill Wendling-3 wrote:
>>
>> The error is coming from the bit-code reader. Make sure that you
generated
>> the file with '-emit-llvm' (i.e., it's not an object file)
and that it's
>> the binary version of the bit-code file, not the text version.
>>
>> And, llvm-gcc? really? :-)
>>
>>
>
> Is there no way that the API can generate valid bitcode?
it can, for example by generating human readable IR rather than bitcode.
Why don't you look in the file and see what's in there?

Ciao, Duncan.

Sorry, I was being an idiot and was trying to link the wrong file type. Sigh.

Now I have a problem where I merge two modules each containing the same
struct, one opaque and one defined, and it's not merging the two
consistently. I have two, let's say

%"StructA" = type opaque
%"StructB" = type opaque

in one module, and in the other:

%"StructA" = type { i8 }
%"StructB" = type  { [0 x i8] }

and when I link the two modules, only one is correctly defined:

%"StructA" = { i8 }
%"StructB" = type opaque
%"StructB.0" =  { [0 x i8] }

I know it's not technically 'on-topic' for this thread, but just in
case you
had any ideas as to why this is happening.

Cheers/


Duncan Sands wrote:
> 
> Hi Fraser,
> 
> it can, for example by generating human readable IR rather than bitcode.
> Why don't you look in the file and see what's in there?
> 
> Ciao, Duncan.
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