[llvm] [ELF] Add CPU name detection for CUDA architectures (PR #75964)

[Fangrui Song via llvm-commits]

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@@ -517,6 +519,73 @@ StringRef ELFObjectFileBase::getAMDGPUCPUName() const {
   }
 }
 
+StringRef ELFObjectFileBase::getNVPTXCPUName() const {
+  assert(getEMachine() == ELF::EM_CUDA);
+  unsigned SM = getPlatformFlags() & ELF::EF_CUDA_SM;
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MaskRay wrote:

If SM is only used once, just inline it into the use site

https://github.com/llvm/llvm-project/pull/75964