[clang] [llvm] [HLSL][Clang] Start emitting @llvm.structured.alloca (PR #190157)

[Nathan Gauër via cfe-commits]

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@@ -107,7 +107,12 @@ RawAddress
 CodeGenFunction::CreateTempAllocaWithoutCast(llvm::Type *Ty, CharUnits Align,
                                              const Twine &Name,
                                              llvm::Value *ArraySize) {
-  auto Alloca = CreateTempAlloca(Ty, Name, ArraySize);
+  if (getLangOpts().EmitLogicalPointer) {
+    auto Alloca = Builder.CreateStructuredAlloca(Ty, Name);
+    return RawAddress(Alloca, Ty, Align, KnownNonNull);
+  }
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Keenuts wrote:

For this case, I think we should simply refuse alloca/gep in the backend at some point.

https://github.com/llvm/llvm-project/pull/190157