[llvm] Emit debug type vector (PR #200056)

[Manuel Carrasco via llvm-commits]

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@@ -587,6 +595,32 @@ void SPIRVNonSemanticDebugHandler::emitNonSemanticGlobalDebugInfo(
     DebugTypeRegs[BT] = BTReg;
   }
 
+  // Emit DebugTypeVector for each collected vector type. Skip vectors whose
+  // element type is not a DIBasicType (composite element types are not yet
+  // supported) and vectors with a non-constant subrange count (not yet
+  // supported).
+  for (const DICompositeType *VT : VectorTypes) {
+    const auto *BaseTy = dyn_cast_or_null<DIBasicType>(VT->getBaseType());
+    if (!BaseTy)
+      continue;
+    auto BTIt = DebugTypeRegs.find(BaseTy);
+    if (BTIt == DebugTypeRegs.end())
+      continue;
+
+    DINodeArray Elements = VT->getElements();
+    if (Elements.size() != 1)
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mgcarrasco wrote:

I'm asking this to learn, what's this restriction for? What sort of code could generate an instance where Elements.size() != 1? Could we add a test for that scenario?

https://github.com/llvm/llvm-project/pull/200056