[LLVMdev] llvm::Triple error in new backend

[Tom Stellard]

On Tue, Jun 19, 2012 at 03:32:34PM +0200, listiges at arcor.de wrote:
> Hi,
> 
> I try to write a new backend. At the moment I run into a compiler error and don't know how I can solve this problem.
> 
> Like several other targets I have a file 'mybackendTargetInfo.cpp' in the subdirectory 'TargetInfo'. The content of this file is:
> 
> #include "mybackend.h"
> #include "llvm/Module.h"
> #include "llvm/Support/TargetRegistry.h"
> using namespace llvm;
> 
> Target llvm::TheMybackendTarget;
> 
> extern "C" void LLVMInitializeMybackendTargetInfo() { 
>   RegisterTarget<Triple::mybackend> X(TheMybackendTarget, "mybackend", "mybackend");
> }
> 
> Nothing special I think.
> 
> The error message of the compiler is:
> llvm[1]: Compiling mybackendTargetInfo.cpp for Release+Asserts build
> synzenTargetInfo.cpp:17:26: error: no member named 'mybackend' in 'llvm::Triple'
>   RegisterTarget<Triple::mybackend> X(TheMybackendTarget, "mybackend", "mybackend");
>                  ~~~~~~~~^
> 1 error generated.
> make[1]: *** [/dev/llvm-3.1/lib/Target/mybackend/TargetInfo/Release+Asserts/mybackendTargetInfo.o] Error 1
> make: *** [all] Error 1
> 

You need to add your backend to the enumeration in llvm/ADT/Triple.h
You will also need to teach the functions in lib/Support/Triple.cpp
about your backend.

-Tom


> I think I understand the error message, but I don't know what I have to change or add. I tried to copy as much as possible from running backends to avoid errors - but I missed ;-)
> 
> Is there something in the target descriptions (.td files) I have to change?
> 
> I would be happy about every hint.
> 
> Thanks a lot,
> Nico
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