llvm dev - Nov 2009 - [LLVMdev] newbie qustion: how to generate machine code for target thumb?

Hello everyone,

I want to generate machine code for target thumb, so run
with bit code test.bc

llc -march thumb  test.bc -filetype obj -o test.o

It doesn't generate test.o but show a message:

"target doesn't support generation of this file type!"

What's wrong?

Thanks
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Hi Heyu Zhu,
> I want to generate machine code for target thumb, so run
> with bit code test.bc
>  
> llc -march thumb  test.bc -filetype obj -o test.o
>  
> It doesn't generate test.o but show a message:
>  
> "target doesn't support generation of this file type!"
writing object code directly is not supported yet (though it is being worked
on), so for the moment you should not use "-filetype obj".  Without
this option
llc will generate assembler, which you will need to assemble using an
appropriate assembler.

Best wishes,

Duncan.

Hi Duncan,

Is it to say llvm-2.5 has no assembler and linker for target thumb and
llvm-2.5 can only generate assembler file for the time being?

Thanks


2009/11/4, Duncan Sands <baldrick at free.fr>:
>
> Hi Heyu Zhu,
>
> I want to generate machine code for target thumb, so run
>> with bit code test.bc
>>  llc -march thumb  test.bc -filetype obj -o test.o
>>  It doesn't generate test.o but show a message:
>>  "target doesn't support generation of this file type!"
>>
>
> writing object code directly is not supported yet (though it is being
> worked
> on), so for the moment you should not use "-filetype obj". 
Without this
> option
> llc will generate assembler, which you will need to assemble using an
> appropriate assembler.
>
> Best wishes,
>
> Duncan.
>
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