[llvm] [SPIR-V] Implement correct zeroinitializer for extension types in SPIR-V Backend (PR #93607)

[Vyacheslav Levytskyy via llvm-commits]

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@@ -1191,8 +1191,7 @@ void SPIRVEmitIntrinsics::processInstrAfterVisit(Instruction *I,
       B.SetInsertPoint(I);
       Value *OpTyVal = Op;
       if (Op->getType()->isTargetExtTy())
-        OpTyVal = Constant::getNullValue(
-            IntegerType::get(I->getContext(), GR->getPointerSize()));
+        OpTyVal = UndefValue::get(Op->getType());
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VyacheslavLevytskyy wrote:

Thank you for the suggestion, applied.

https://github.com/llvm/llvm-project/pull/93607