[clang] [clang] Lower _BitInt(129+) to a different type in LLVM IR (PR #91364)

[Mariya Podchishchaeva via cfe-commits]

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@@ -761,6 +761,10 @@ bool ConstStructBuilder::Build(const InitListExpr *ILE, bool AllowOverwrite) {
       if (Field->hasAttr<NoUniqueAddressAttr>())
         AllowOverwrite = true;
     } else {
+      llvm::Type *LoadType = CGM.getTypes().convertTypeForLoadStore(
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Fznamznon wrote:

That would change `AppendBitField` to have a `llvm::Value` parameter instead of `llvm::ConstantInt`, is that still ok?

https://github.com/llvm/llvm-project/pull/91364