VFP3

Damanjit_Singh · June 23, 2014, 10:27am

How can I ensure use of VFP3 via LLVM target options? I am currently using thumbv7-windows-msvc as the target triple and default set of llvm::TargetOptions.

Thanks,
Daman

Amara_Emerson2 · June 23, 2014, 10:41am

Hi Damanjit,

I assume you're trying to use the tools like llvm-mc, in which case
you can use the -mattr=+vfpv3 flag to enable it. This applies to other
subtarget features defined in ARM.td as well.

Cheers,
Amara

Damanjit_Singh · June 23, 2014, 10:46am

I am not using llvm tools, but sources and directly calling into relevant
LLVM classes and methods.

Thanks,
Daman

Damanjit_Singh · June 23, 2014, 11:09am

Also tried via tools. It says - "+vfpv3' is not a recognized feature for
this target (ignoring feature)

My command line was - i686-apple-darwin11-llc
-mtriple=thumbv7-windows-msvc -function-sections -data-sections -O0
-mattr=+vfpv3 -filetype=obj aotInfo.ll

-Daman

Damanjit_Singh · June 23, 2014, 11:13am

Oh my bad, vfp3 works, instead of vfpv3.

-Daman