llvm dev - Jun 2020 - amdgcn target machine creation assertion FuseFPOpsView RegisterCodeGenFlags

Creating the target machine with target 'amdgcn' hits the following 
assertion:

llvm-project/llvm/lib/CodeGen/CommandFlags.cpp:65: 
llvm::FPOpFusion::FPOpFusionMode llvm::codegen::getFuseFPOps(): 
Assertion `FuseFPOpsView && "RegisterCodeGenFlags not
created."' failed.

Here the code that runs into the assertion:

   llvm::Triple TheTriple;
   TheTriple.setArch (llvm::Triple::ArchType::amdgcn);
   TheTriple.setVendor (llvm::Triple::VendorType::AMD);
   TheTriple.setOS (llvm::Triple::OSType::AMDHSA);

   std::string Error;
   const llvm::Target *TheTarget = llvm::TargetRegistry::lookupTarget( 
TheTriple.str() , Error );

   llvm::TargetOptions Options = 
llvm::codegen::InitTargetOptionsFromCodeGenFlags();

   std::string CPUStr("gfx906");
   std::string FeaturesStr;

   std::unique_ptr<llvm::TargetMachine> 
TargetMachine(TheTarget->createTargetMachine(
                                             TheTriple.getTriple(),
                                             CPUStr,
                                             FeaturesStr,
                                             Options,
                                             llvm::Optional< 
llvm::Reloc::Model >() ));


Anyone sees what's missing?


This is using the llvm from RadeonOpenCompute/llvm-project and I am not 
sure what llvm version that corresponds to.



Thanks,

Frank

Hi Frank,

On Mon, Jun 29, 2020 at 11:41 PM Frank Winter via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> Creating the target machine with target 'amdgcn' hits the following
> assertion:
>
> llvm-project/llvm/lib/CodeGen/CommandFlags.cpp:65:
> llvm::FPOpFusion::FPOpFusionMode llvm::codegen::getFuseFPOps():
> Assertion `FuseFPOpsView && "RegisterCodeGenFlags not
created."' failed.
>
> Here the code that runs into the assertion:
[snip]

Does that error occur on LLVM master? If you're writing your own
frontend or tooling, that's what you should ideally target, because we
generally upstream our changes as much as possible.

Cheers,
Nicolai

>
>
> Thanks,
>
> Frank
>
>
>
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
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