[Mlir-commits] [llvm] [mlir] Introduce a "log level" support for DEBUG_TYPE (PR #150855)

[Jacques Pienaar]

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@@ -38,27 +40,62 @@
 
 using namespace llvm;
 
+/// Parse a debug type string into a pair of the debug type and the debug level.
+/// The expected format is "type[:level]", where the level is an optional
+/// integer.
+static std::pair<std::string, std::optional<int>>
+parseDebugType(StringRef DbgType) {
+  std::optional<int> Level;
+  size_t ColonPos = DbgType.find(':');
+  if (ColonPos != StringRef::npos) {
+    StringRef LevelStr = DbgType.substr(ColonPos + 1);
+    DbgType = DbgType.take_front(ColonPos);
+    if (LevelStr.empty())
+      Level = 0;
+    else {
+      int parsedLevel;
+      if (to_integer(LevelStr, parsedLevel, 10))
+        Level = parsedLevel;
+    }
+  }
+  return std::make_pair(DbgType.str(), Level);
+}
+
 // Even though LLVM might be built with NDEBUG, define symbols that the code
 // built without NDEBUG can depend on via the llvm/Support/Debug.h header.
 namespace llvm {
 /// Exported boolean set by the -debug option.
 bool DebugFlag = false;
 
-static ManagedStatic<std::vector<std::string>> CurrentDebugType;
+/// The current debug type and an optional debug level.
+/// The debug level is the verbosity of the debug output.
+/// The default level is 0, which is the most verbose.
+/// The level can be set to 1, 2, 3, etc. to control the verbosity of the
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jpienaar wrote:

Does this need an update?

https://github.com/llvm/llvm-project/pull/150855