[clang] [CIR] floating-point, pointer, and function types (PR #120484)

[Bruno Cardoso Lopes via cfe-commits]

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@@ -63,13 +153,71 @@ mlir::Type CIRGenTypes::convertType(QualType type) {
           cir::IntType::get(&getMLIRContext(), astContext.getTypeSize(ty),
                             /*isSigned=*/false);
       break;
+
+    // Floating-point types
+    case BuiltinType::Float16:
+      resultType = cgm.FP16Ty;
+      break;
+    case BuiltinType::Half:
+      if (astContext.getLangOpts().NativeHalfType ||
+          !astContext.getTargetInfo().useFP16ConversionIntrinsics()) {
+        resultType = cgm.FP16Ty;
+      } else {
+        cgm.errorNYI(SourceLocation(), "processing of built-in type", type);
+        resultType = cgm.SInt32Ty;
+      }
+      break;
+    case BuiltinType::BFloat16:
+      resultType = cgm.BFloat16Ty;
+      break;
+    case BuiltinType::Float:
+      assert(&astContext.getFloatTypeSemantics(type) ==
+                 &llvm::APFloat::IEEEsingle() &&
+             "ClangIR only supports float as IEEE 32-bit");
+      resultType = cgm.FloatTy;
+      break;
+    case BuiltinType::Double:
+      assert(&astContext.getFloatTypeSemantics(type) ==
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bcardosolopes wrote:

If we know there are possible 32 bit doubles (given previous comment), this looks more like NYI?

https://github.com/llvm/llvm-project/pull/120484