[Mlir-commits] [mlir] [mlir] Add support for DIGlobalVariable and DIGlobalVariableExpression (PR #73367)

[Christian Ulmann]

================
@@ -109,3 +122,71 @@ bool MemoryEffectsAttr::isReadWrite() {
     return false;
   return true;
 }
+
+//===----------------------------------------------------------------------===//
+// DIExpression
+//===----------------------------------------------------------------------===//
+
+DIExpressionAttr DIExpressionAttr::get(MLIRContext *context) {
+  return get(context, ArrayRef<DIExpressionElemAttr>({}));
+}
+
+/// Parse DWARF expression arguments with respect to the DWARF operation
+/// opcode. Some DWARF expression operations have a specific number of operands
+/// and may appear in a textual form.
+LogicalResult parseExpressionArg(AsmParser &parser, uint64_t opcode,
+                                 SmallVector<uint64_t> &args) {
+  auto operandParser = [&]() -> LogicalResult {
+    uint64_t operand = 0;
+    if (!args.empty() && opcode == llvm::dwarf::DW_OP_LLVM_convert) {
+      // Attempt to parse an keyword.
----------------
Dinistro wrote:

```suggestion
      // Attempt to parse a keyword.
```

https://github.com/llvm/llvm-project/pull/73367