[TableGen] Split the target description generator

1 files changed, 27 insertions, 0 deletions

diff --git a/backend/utils/TableGen/RegisterBankEmitter.cpp b/backend/utils/TableGen/RegisterBankEmitter.cpp
new file mode 100644
index 0000000..54deb63
--- /dev/null
+++ b/backend/utils/TableGen/RegisterBankEmitter.cpp
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "TableGenBackends.h"
+
+#include <ranges>
+#include <sstream>
+#include <string>
+
+namespace rcc::targetgen {
+
+std::string emitRegisterBanks(const NormalizedTargetModel &Model) {
+  std::ostringstream Output;
+  for (const NormalizedRegisterBank &Bank : Model.RegisterBanks) {
+    Output << "      {RegisterBankID::fromValue(" << Bank.ID << "), ";
+    appendQuoted(Output, Bank.Name);
+    Output << ", " << Bank.MaximumSizeInBits << ", {";
+    for (const std::uint32_t ClassID : Bank.RegisterClasses) {
+      const auto Position =
+          std::ranges::find(Model.RegisterClasses, ClassID, &NormalizedRegisterClass::ID);
+      Output << "RegisterClassID::fromValue(" << Position->ID << "), ";
+    }
+    Output << "}},\n";
+  }
+  return Output.str();
+}
+
+} // namespace rcc::targetgen