[llvm] [SPIR-V] Add support for inline SPIR-V types (PR #125316)

[Nathan Gauër via llvm-commits]

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@@ -968,6 +968,29 @@ static TargetTypeInfo getTargetTypeInfo(const TargetExtType *Ty) {
   if (Name == "spirv.Image")
     return TargetTypeInfo(PointerType::get(C, 0), TargetExtType::CanBeGlobal,
                           TargetExtType::CanBeLocal);
+  if (Name == "spirv.Type") {
+    assert(Ty->getNumIntParameters() == 3 &&
+           "Wrong number of parameters for spirv.Type");
+
+    auto Size = Ty->getIntParameter(1);
+    auto Alignment = Ty->getIntParameter(2);
+
+    llvm::Type *LayoutType;
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Keenuts wrote:

nit: `= nullptr` ? (should be removed by compiler if the condition remains, but will crash if condition is broken one day)

https://github.com/llvm/llvm-project/pull/125316