[TableGen] Split the target description generator

1 files changed, 23 insertions, 0 deletions

diff --git a/backend/utils/TableGen/SubtargetEmitter.cpp b/backend/utils/TableGen/SubtargetEmitter.cpp
new file mode 100644
index 0000000..f374d48
--- /dev/null
+++ b/backend/utils/TableGen/SubtargetEmitter.cpp
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "TableGenBackends.h"
+
+#include <sstream>
+#include <string>
+
+namespace rcc::targetgen {
+
+std::string emitSubtarget(const NormalizedTargetModel &Model) {
+  std::ostringstream Output;
+  Output << "constexpr std::array<SchedulingClassInfo, " << Model.SchedulingClasses.size()
+         << "> GeneratedSchedulingClasses = {{\n";
+  for (const NormalizedSchedulingClass &Class : Model.SchedulingClasses) {
+    Output << "    {SchedulingClassID::fromValue(" << Class.ID << "), ";
+    appendQuoted(Output, Class.Name);
+    Output << ", " << Class.MicroOps << ", " << Class.Latency << "},\n";
+  }
+  Output << "}};\n\n";
+  return Output.str();
+}
+
+} // namespace rcc::targetgen