[llvm-branch-commits] [SPARC][IAS] Add IAS flag handling for ISA levels (PR #124953)

[via llvm-branch-commits]

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@@ -2738,6 +2739,31 @@ static void CollectArgsForIntegratedAssembler(Compilation &C,
         if (MipsTargetFeature)
           continue;
         break;
+
+      case llvm::Triple::sparc:
+      case llvm::Triple::sparcel:
+      case llvm::Triple::sparcv9:
+        if (Value == "--undeclared-regs") {
+          // LLVM already allows undeclared use of G registers, so this option
+          // becomes a no-op. This solely exists for GNU compatibility.
+          // TODO implement --no-undeclared-regs
+          continue;
+        }
+        SparcTargetFeatures =
+            llvm::StringSwitch<llvm::SmallVector<const char *>>(Value)
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koachan wrote:

I have a feeling that this part could be done better...?

https://github.com/llvm/llvm-project/pull/124953