[cfe-dev] aborting a compilation with illegal arguments

Hal Finkel via cfe-dev cfe-dev at lists.llvm.org
Fri Dec 11 10:09:47 PST 2015


Hi Jonas,

Please see getPPCTargetFeatures in lib/Driver/Tools.cpp (you'll need look for OPT_fzvector and add some corresponding feature for the cc1 invocation).

 -Hal

----- Original Message -----
> From: "Jonas Paulsson" <paulsson at linux.vnet.ibm.com>
> To: "Hal Finkel" <hfinkel at anl.gov>
> Cc: cfe-dev at lists.llvm.org
> Sent: Monday, December 7, 2015 9:21:35 AM
> Subject: Re: [cfe-dev] aborting a compilation with illegal arguments
> 
> Hi Hal,
> 
> thanks for help!
> 
> The FeaturesVec is however empty in initFeatureMap(). Passing
> -fzvector
> is recognized in ParseLangArgs():
> 
>    if (Args.hasArg(OPT_fzvector))
>      Opts.ZVector = 1;
> 
> It however does not seem like this flag is accessible in
> initFeatureMap(). What should I do?
> 
> /Jonas
> 
> 
> On 2015-12-04 15:24, Hal Finkel wrote:
> > Hi Jonas,
> >
> > We have a similar set of checks for -mpower8-vector and -mvsx, see
> > ppcUserFeaturesCheck in lib/Basic/Targets.cpp.
> >
> >   -Hal
> >
> > ----- Original Message -----
> >> From: "Jonas Paulsson via cfe-dev" <cfe-dev at lists.llvm.org>
> >> To: cfe-dev at lists.llvm.org
> >> Sent: Friday, December 4, 2015 8:03:32 AM
> >> Subject: [cfe-dev] aborting a compilation with illegal arguments
> >>
> >> Hi,
> >>
> >> SystemZ only has vector support on z13, and therefore it does not
> >> make
> >> sense to pass the -fzvector option without specifying z13 as well.
> >> Currently, if compiling with clang, the compilation will abort
> >> during
> >> isel in cases where -fzvector is used incorrectly, but it seems
> >> best
> >> to
> >> abort early, in the FE, if possible.
> >>
> >> I would like to ask how one would best handle this.
> >> SystemZTargetInfo
> >> has a vector feature, which it would make sense to check against.
> >> One
> >> could also check the CPU string, I guess.
> >>
> >> /Jonas Paulsson
> >>
> >> _______________________________________________
> >> cfe-dev mailing list
> >> cfe-dev at lists.llvm.org
> >> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev
> >>
> 
> 

-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory


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