[clang] [clang] fix half && bfloat16 convert node expr codegen (PR #89051)

[Matt Arsenault via cfe-commits]

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@@ -1906,7 +1909,15 @@ Value *ScalarExprEmitter::VisitConvertVectorExpr(ConvertVectorExpr *E) {
   } else {
     assert(SrcEltTy->isFloatingPointTy() && DstEltTy->isFloatingPointTy() &&
            "Unknown real conversion");
-    if (DstEltTy->getTypeID() < SrcEltTy->getTypeID())
+    if ((DstEltTy->is16bitFPTy() && SrcEltTy->is16bitFPTy())) {
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arsenm wrote:

This should be a separate change if it's correct 

https://github.com/llvm/llvm-project/pull/89051