[clang] [CIR] Upstream `AddressSpace` conversions support (PR #161212)

[Andy Kaylor via cfe-commits]

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@@ -172,32 +190,28 @@ RValue CIRGenFunction::emitBuiltinExpr(const GlobalDecl &gd, unsigned builtinID,
         builder.getUInt8Ty(), "bi_alloca", suitableAlignmentInBytes, size);
 
     // Initialize the allocated buffer if required.
-    if (builtinID != Builtin::BI__builtin_alloca_uninitialized) {
-      // Initialize the alloca with the given size and alignment according to
-      // the lang opts. Only the trivial non-initialization is supported for
-      // now.
-
-      switch (getLangOpts().getTrivialAutoVarInit()) {
-      case LangOptions::TrivialAutoVarInitKind::Uninitialized:
-        // Nothing to initialize.
-        break;
-      case LangOptions::TrivialAutoVarInitKind::Zero:
-      case LangOptions::TrivialAutoVarInitKind::Pattern:
-        cgm.errorNYI("trivial auto var init");
-        break;
-      }
-    }
+    if (builtinID != Builtin::BI__builtin_alloca_uninitialized)
+      initializeAlloca(*this, allocaAddr, size, suitableAlignmentInBytes);
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andykaylor wrote:

This change is unrelated to what you're doing in this PR. It should be done in a separate PR (probably when a second call to `initializeAlloca` is needed).

https://github.com/llvm/llvm-project/pull/161212