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

[Eli Friedman 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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efriedma-quic wrote:

I have no idea what this is supposed to do; why don't we want to use the "memory" type here?

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