[clang] [llvm] [OpenASIP] Update the TCE target defs for OpenASIP 2.2 (PR #176698)

[Henry Linjamäki via cfe-commits]

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@@ -120,6 +122,9 @@ class LLVM_LIBRARY_VISIBILITY TCETargetInfo : public TargetInfo {
   ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override {
     return {};
   }
+
+  // TCE does not have fixed, but user specified register names.
+  bool isValidGCCRegisterName(StringRef Name) const override { return true; }
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linehill wrote:

Seems dubious to me to accept arbitrary (possibly non-sensible) register names - but I'm not sure what this method is for and the BPF target defines the method in the same way so perhaps this is fine.

https://github.com/llvm/llvm-project/pull/176698