[llvm] r261977 - [X86] Explicitly diagnose use of %xmm16-%xmm31, %ymm16-%ymm31 and %zmm16-%zmm31 when AVX512 is not enabled in the asm parser.

[Sean Silva via llvm-commits]

Did you have a local test case you were iterating on that you could add?

-- Sean Silva

On Thu, Feb 25, 2016 at 9:29 PM, Craig Topper via llvm-commits <
llvm-commits at lists.llvm.org> wrote:

> Author: ctopper
> Date: Thu Feb 25 23:29:32 2016
> New Revision: 261977
>
> URL: http://llvm.org/viewvc/llvm-project?rev=261977&view=rev
> Log:
> [X86] Explicitly diagnose use of %xmm16-%xmm31, %ymm16-%ymm31 and
> %zmm16-%zmm31 when AVX512 is not enabled in the asm parser.
>
> Modified:
>     llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp
>
> Modified: llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp?rev=261977&r1=261976&r2=261977&view=diff
>
> ==============================================================================
> --- llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp (original)
> +++ llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp Thu Feb 25
> 23:29:32 2016
> @@ -908,10 +908,16 @@ bool X86AsmParser::ParseRegister(unsigne
>      if (RegNo == X86::RIZ ||
>          X86MCRegisterClasses[X86::GR64RegClassID].contains(RegNo) ||
>          X86II::isX86_64NonExtLowByteReg(RegNo) ||
> -        X86II::isX86_64ExtendedReg(RegNo))
> +        X86II::isX86_64ExtendedReg(RegNo) ||
> +        X86II::is32ExtendedReg(RegNo))
>        return Error(StartLoc, "register %"
>                     + Tok.getString() + " is only available in 64-bit
> mode",
>                     SMRange(StartLoc, EndLoc));
> +  } else if (!getSTI().getFeatureBits()[X86::FeatureAVX512]) {
> +    if (X86II::is32ExtendedReg(RegNo))
> +      return Error(StartLoc, "register %"
> +                   + Tok.getString() + " is only available in with
> AVX512",
> +                   SMRange(StartLoc, EndLoc));
>    }
>
>    // Parse "%st" as "%st(0)" and "%st(1)", which is multiple tokens.
>
>
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