[clang] [HLSL] Make sure `isSigned` flag is set on target type for `TypedBuffer` resources with signed int vectors (PR #130223)

[Joshua Batista via cfe-commits]

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@@ -59,8 +59,14 @@ llvm::Type *DirectXTargetCodeGenInfo::getHLSLType(
     SmallVector<unsigned, 3> Ints = {/*IsWriteable*/ ResAttrs.ResourceClass ==
                                          llvm::dxil::ResourceClass::UAV,
                                      /*IsROV*/ ResAttrs.IsROV};
-    if (!ResAttrs.RawBuffer)
-      Ints.push_back(/*IsSigned*/ ContainedTy->isSignedIntegerType());
+    if (!ResAttrs.RawBuffer) {
+      const clang::Type *ElemType = ContainedTy->getUnqualifiedDesugaredType();
+      if (ElemType->isVectorType())
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bob80905 wrote:

Does it make sense to add a while loop here?
Could it be more than a 2D vector?

https://github.com/llvm/llvm-project/pull/130223