[clang] [llvm] [HLSL][SPIR-V] Implement vk::ext_builtin_input attribute (PR #138530)

[Steven Perron via cfe-commits]

Nathan =?utf-8?q?Gauër?= <brioche at google.com>,
Nathan =?utf-8?q?Gauër?= <brioche at google.com>,
Nathan =?utf-8?q?Gauër?= <brioche at google.com>,
Nathan =?utf-8?q?Gauër?= <brioche at google.com>
Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/138530 at github.com>


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@@ -5636,6 +5636,8 @@ void CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D,
     Init = llvm::UndefValue::get(getTypes().ConvertTypeForMem(ASTTy));
   else if (D->hasAttr<LoaderUninitializedAttr>())
     Init = llvm::UndefValue::get(getTypes().ConvertTypeForMem(ASTTy));
+  else if (GetGlobalVarAddressSpace(D) == LangAS::hlsl_input)
+    Init = llvm::UndefValue::get(getTypes().ConvertTypeForMem(ASTTy));
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s-perron wrote:

I think you want the poison value here. Undef is being deprecated.

https://github.com/llvm/llvm-project/pull/138530