llvm dev - Jun 2011 - [LLVMdev] arm processor support by llvm

In the help command when i checked the processors supported by llvm 2.9 it
showed arm926ej-s. which means thumb mode is supported right? this belongs
to armv5. but the llvm documentation says thumb mode is supported only for
armv6 and higher.. does it mean there is only a partial support for this
processor?
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On 2 June 2011 12:36, vinitha reddy <vinitha210 at gmail.com>
wrote:
> In the help command when i checked the processors supported by llvm 2.9 it
> showed arm926ej-s. which means thumb mode is supported right? this belongs
> to armv5. but the llvm documentation says thumb mode is supported only for
> armv6 and higher.. does it mean there is only a partial support for this
> processor?
Hi Vinitha,

LLVM does support thumb for ARM9 (llc -march=thumb -mcpu=arm926ej-s file.bc).

Cross-compilation with clang is still not good enough, but you can do
it in two phases (clang+llc) and get thumb correctly generated.

We are working on a patch to simplify cross-compilation on clang, though.

cheers,
--renato