[LLVMdev] code generation for ARM

[Stephen Hines]

-DLINUX_i386 seems like it might be including x86-specific assembly or
intrinsics.

Steve

On Tue, Jun 14, 2011 at 10:53 AM, D S Khudia <daya.khudia at gmail.com> wrote:

> Thanks for your reply.
>
> I have a normal (../configure --enable-profiling --disable-optimized
> --enable-assertions) llvm debug+profile+assert build.
> I am generating llvm-bitcode using following commands.
>
> llvm-gcc -DLINUX_i386 -DSPEC_CPU2000 -O3 -emit-llvm 186.crafty/src/valid.c
> -c -o 186.crafty/src/valid.bc
> ---
>
> llvm-link 186.crafty/src/*.bc -o 186.crafty/186.crafty.rel.bc
>
> and finally:
>
> llc -march=arm 186.crafty/186.crafty.rel.bc -o
> 186.crafty/186.crafty.m5arm.s
>
> And there is not inline assembly in my C code.
>
> Should I somehow specify arm related options to llvm while building llvm?
>
> Thanks
> Daya
>
> On Tue, Jun 14, 2011 at 1:34 PM, Anton Korobeynikov <
> anton at korobeynikov.info> wrote:
>
>> Hello
>>
>> > Command => llc -march=arm 186.crafty/186.crafty.rel.bc -o
>> > 186.crafty/186.crafty.m5arm.s
>> > Error =>  LLVM ERROR: Couldn't allocate output reg for constraint
>> '{cx}'!
>> >
>> > Have anyone seen this before?
>> It seems you're feeding x86-specific LLVM IR to arm backend. Please
>> don't do that.
>>
>> --
>> With best regards, Anton Korobeynikov
>> Faculty of Mathematics and Mechanics, Saint Petersburg State University
>>
>
>
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