Port -instnamer to NPM

Some clang tests use this.

Reviewed By: akhuang

Differential Revision: https://reviews.llvm.org/D89931

include/llvm/Transforms/Utils/InstructionNamer.h

@@ -0,0 +1,20 @@
+//===- InstructionNamer.h - Give anonymous instructions names -------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_UTILS_INSTRUCTIONNAMER_H
+#define LLVM_TRANSFORMS_UTILS_INSTRUCTIONNAMER_H
+
+#include "llvm/IR/PassManager.h"
+
+namespace llvm {
+struct InstructionNamerPass : PassInfoMixin<InstructionNamerPass> {
+  PreservedAnalyses run(Function &, FunctionAnalysisManager &);
+};
+} // namespace llvm
+
+#endif // LLVM_TRANSFORMS_UTILS_INSTRUCTIONNAMER_H

lib/Passes/PassBuilder.cpp

@@ -201,6 +201,7 @@
 #include "llvm/Transforms/Utils/EntryExitInstrumenter.h"
 #include "llvm/Transforms/Utils/FixIrreducible.h"
 #include "llvm/Transforms/Utils/InjectTLIMappings.h"
+#include "llvm/Transforms/Utils/InstructionNamer.h"
 #include "llvm/Transforms/Utils/LCSSA.h"
 #include "llvm/Transforms/Utils/LibCallsShrinkWrap.h"
 #include "llvm/Transforms/Utils/LoopSimplify.h"

lib/Passes/PassRegistry.def

@@ -225,6 +225,7 @@ FUNCTION_PASS("no-op-function", NoOpFunctionPass())
 FUNCTION_PASS("libcalls-shrinkwrap", LibCallsShrinkWrapPass())
 FUNCTION_PASS("lint", LintPass())
 FUNCTION_PASS("inject-tli-mappings", InjectTLIMappings())
+FUNCTION_PASS("instnamer", InstructionNamerPass())
 FUNCTION_PASS("loweratomic", LowerAtomicPass())
 FUNCTION_PASS("lower-expect", LowerExpectIntrinsicPass())
 FUNCTION_PASS("lower-guard-intrinsic", LowerGuardIntrinsicPass())

lib/Transforms/Utils/InstructionNamer.cpp

@@ -13,15 +13,35 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/Transforms/Utils/InstructionNamer.h"
 #include "llvm/IR/Function.h"
+#include "llvm/IR/PassManager.h"
 #include "llvm/IR/Type.h"
 #include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Transforms/Utils.h"
+
 using namespace llvm;
 
 namespace {
-  struct InstNamer : public FunctionPass {
+void nameInstructions(Function &F) {
+  for (auto &Arg : F.args()) {
+    if (!Arg.hasName())
+      Arg.setName("arg");
+  }
+
+  for (BasicBlock &BB : F) {
+    if (!BB.hasName())
+      BB.setName("bb");
+
+    for (Instruction &I : BB) {
+      if (!I.hasName() && !I.getType()->isVoidTy())
+        I.setName("i");
+    }
+  }
+}
+
+struct InstNamer : public FunctionPass {
   static char ID; // Pass identification, replacement for typeid
   InstNamer() : FunctionPass(ID) {
     initializeInstNamerPass(*PassRegistry::getPassRegistry());
@@ -32,24 +52,13 @@ namespace {
   }
 
   bool runOnFunction(Function &F) override {
-      for (auto &Arg : F.args())
-        if (!Arg.hasName())
-          Arg.setName("arg");
-
-      for (BasicBlock &BB : F) {
-        if (!BB.hasName())
-          BB.setName("bb");
-
-        for (Instruction &I : BB)
-          if (!I.hasName() && !I.getType()->isVoidTy())
-            I.setName("i");
-      }
+    nameInstructions(F);
     return true;
   }
-  };
+};
 
   char InstNamer::ID = 0;
-}
+  } // namespace
 
 INITIALIZE_PASS(InstNamer, "instnamer",
                 "Assign names to anonymous instructions", false, false)
@@ -61,3 +70,9 @@ char &llvm::InstructionNamerID = InstNamer::ID;
 FunctionPass *llvm::createInstructionNamerPass() {
   return new InstNamer();
 }
+
+PreservedAnalyses InstructionNamerPass::run(Function &F,
+                                            FunctionAnalysisManager &FAM) {
+  nameInstructions(F);
+  return PreservedAnalyses::all();
+}

test/Transforms/InstNamer/basic.ll

@@ -1,4 +1,5 @@
 ; RUN: opt -S -instnamer < %s | FileCheck %s
+; RUN: opt -S -passes=instnamer < %s | FileCheck %s
 
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"