[NewPM][BPF] Add BPFPassRegistry.def NFCI (#86241)

Prepare migration for dag-isel.

Author: paperchalice

llvm/lib/Target/BPF/BPFPassRegistry.def

@@ -0,0 +1,32 @@
+//===- BPFPassRegistry.def - Registry of BPF passes -------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is used as the registry of passes that are part of the
+// BPF backend.
+//
+//===----------------------------------------------------------------------===//
+
+// NOTE: NO INCLUDE GUARD DESIRED!
+
+#ifndef FUNCTION_PASS
+#define FUNCTION_PASS(NAME, CREATE_PASS)
+#endif
+FUNCTION_PASS("bpf-aspace-simplify", BPFASpaceCastSimplifyPass())
+FUNCTION_PASS("bpf-ir-peephole", BPFIRPeepholePass())
+#undef FUNCTION_PASS
+
+#ifndef FUNCTION_PASS_WITH_PARAMS
+#define FUNCTION_PASS_WITH_PARAMS(NAME, CLASS, CREATE_PASS, PARSER, PARAMS)
+#endif
+FUNCTION_PASS_WITH_PARAMS(
+    "bpf-preserve-static-offset", "BPFPreserveStaticOffsetPass",
+    [=](bool AllowPartial) {
+      return BPFPreserveStaticOffsetPass(AllowPartial);
+    },
+    parseBPFPreserveStaticOffsetOptions, "allow-partial")
+#undef FUNCTION_PASS_WITH_PARAMS

llvm/lib/Target/BPF/BPFTargetMachine.cpp

@@ -108,25 +108,16 @@ TargetPassConfig *BPFTargetMachine::createPassConfig(PassManagerBase &PM) {
   return new BPFPassConfig(*this, PM);
 }
 
+static Expected<bool> parseBPFPreserveStaticOffsetOptions(StringRef Params) {
+  return PassBuilder::parseSinglePassOption(Params, "allow-partial",
+                                            "BPFPreserveStaticOffsetPass");
+}
+
 void BPFTargetMachine::registerPassBuilderCallbacks(
     PassBuilder &PB, bool PopulateClassToPassNames) {
-  PB.registerPipelineParsingCallback(
-      [](StringRef PassName, FunctionPassManager &FPM,
-         ArrayRef<PassBuilder::PipelineElement>) {
-        if (PassName == "bpf-ir-peephole") {
-          FPM.addPass(BPFIRPeepholePass());
-          return true;
-        }
-        if (PassName == "bpf-preserve-static-offset") {
-          FPM.addPass(BPFPreserveStaticOffsetPass(false));
-          return true;
-        }
-        if (PassName == "bpf-aspace-simplify") {
-          FPM.addPass(BPFASpaceCastSimplifyPass());
-          return true;
-        }
-        return false;
-      });
+#define GET_PASS_REGISTRY "BPFPassRegistry.def"
+#include "llvm/Passes/TargetPassRegistry.inc"
+
   PB.registerPipelineStartEPCallback(
       [=](ModulePassManager &MPM, OptimizationLevel) {
         FunctionPassManager FPM;