[llvm] [LLVM] Update CUDA ELF flags for their new ABI (PR #149534)

[Joseph Huber via llvm-commits]

================
@@ -679,7 +681,18 @@ StringRef ELFObjectFileBase::getNVPTXCPUName() const {
 
   // Hopper architecture.
   case ELF::EF_CUDA_SM90:
-    return getPlatformFlags() & ELF::EF_CUDA_ACCELERATORS ? "sm_90a" : "sm_90";
+    return getPlatformFlags() & ELF::EF_CUDA_ACCELERATORS_V1 ? "sm_90a"
+                                                             : "sm_90";
----------------
jhuber6 wrote:

Oh, I don't know about those. I just checked `-march=sm_100a` or whatever. Do we support those variants?

https://github.com/llvm/llvm-project/pull/149534