[llvm] [NewPM] Remove PredicateInfoPrinterLegacyPass (PR #73407)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 created https://github.com/llvm/llvm-project/pull/73407

This pass isn't used anywhere upstream and thus has no test coverage. For these reasons, remove it.

>From a846f69332a113eead98b401bdc0b6ebfbc8db4b Mon Sep 17 00:00:00 2001
From: Aiden Grossman <agrossman154 at yahoo.com>
Date: Sat, 25 Nov 2023 14:01:09 -0800
Subject: [PATCH] [NewPM] Remove PredicateInfoPrinterLegacyPass

This pass isn't used anywhere upstream and thus has no test coverage.
For these reasons, remove it.
---
 llvm/include/llvm/InitializePasses.h          |  1 -
 .../llvm/Transforms/Utils/PredicateInfo.h     | 14 --------
 llvm/lib/Transforms/Utils/PredicateInfo.cpp   | 33 -------------------
 llvm/lib/Transforms/Utils/Utils.cpp           |  1 -
 4 files changed, 49 deletions(-)

diff --git a/llvm/include/llvm/InitializePasses.h b/llvm/include/llvm/InitializePasses.h
index 05122ea98d8ca52..fef2030bba75396 100644
--- a/llvm/include/llvm/InitializePasses.h
+++ b/llvm/include/llvm/InitializePasses.h
@@ -243,7 +243,6 @@ void initializePostRAHazardRecognizerPass(PassRegistry&);
 void initializePostRAMachineSinkingPass(PassRegistry&);
 void initializePostRASchedulerPass(PassRegistry&);
 void initializePreISelIntrinsicLoweringLegacyPassPass(PassRegistry&);
-void initializePredicateInfoPrinterLegacyPassPass(PassRegistry&);
 void initializePrintFunctionPassWrapperPass(PassRegistry&);
 void initializePrintModulePassWrapperPass(PassRegistry&);
 void initializeProcessImplicitDefsPass(PassRegistry&);
diff --git a/llvm/include/llvm/Transforms/Utils/PredicateInfo.h b/llvm/include/llvm/Transforms/Utils/PredicateInfo.h
index d2224b61103c987..b433d2ec89dc0e0 100644
--- a/llvm/include/llvm/Transforms/Utils/PredicateInfo.h
+++ b/llvm/include/llvm/Transforms/Utils/PredicateInfo.h
@@ -57,7 +57,6 @@
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/PassManager.h"
 #include "llvm/IR/ValueHandle.h"
-#include "llvm/Pass.h"
 
 namespace llvm {
 
@@ -192,7 +191,6 @@ class PredicateInfo {
 protected:
   // Used by PredicateInfo annotater, dumpers, and wrapper pass.
   friend class PredicateInfoAnnotatedWriter;
-  friend class PredicateInfoPrinterLegacyPass;
   friend class PredicateInfoBuilder;
 
 private:
@@ -209,18 +207,6 @@ class PredicateInfo {
   SmallSet<AssertingVH<Function>, 20> CreatedDeclarations;
 };
 
-// This pass does eager building and then printing of PredicateInfo. It is used
-// by
-// the tests to be able to build, dump, and verify PredicateInfo.
-class PredicateInfoPrinterLegacyPass : public FunctionPass {
-public:
-  PredicateInfoPrinterLegacyPass();
-
-  static char ID;
-  bool runOnFunction(Function &) override;
-  void getAnalysisUsage(AnalysisUsage &AU) const override;
-};
-
 /// Printer pass for \c PredicateInfo.
 class PredicateInfoPrinterPass
     : public PassInfoMixin<PredicateInfoPrinterPass> {
diff --git a/llvm/lib/Transforms/Utils/PredicateInfo.cpp b/llvm/lib/Transforms/Utils/PredicateInfo.cpp
index 1f16ba78bdb0880..902977b08d15379 100644
--- a/llvm/lib/Transforms/Utils/PredicateInfo.cpp
+++ b/llvm/lib/Transforms/Utils/PredicateInfo.cpp
@@ -23,7 +23,6 @@
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/PatternMatch.h"
-#include "llvm/InitializePasses.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/DebugCounter.h"
@@ -33,12 +32,6 @@
 using namespace llvm;
 using namespace PatternMatch;
 
-INITIALIZE_PASS_BEGIN(PredicateInfoPrinterLegacyPass, "print-predicateinfo",
-                      "PredicateInfo Printer", false, false)
-INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
-INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
-INITIALIZE_PASS_END(PredicateInfoPrinterLegacyPass, "print-predicateinfo",
-                    "PredicateInfo Printer", false, false)
 static cl::opt<bool> VerifyPredicateInfo(
     "verify-predicateinfo", cl::init(false), cl::Hidden,
     cl::desc("Verify PredicateInfo in legacy printer pass."));
@@ -835,20 +828,6 @@ std::optional<PredicateConstraint> PredicateBase::getConstraint() const {
 
 void PredicateInfo::verifyPredicateInfo() const {}
 
-char PredicateInfoPrinterLegacyPass::ID = 0;
-
-PredicateInfoPrinterLegacyPass::PredicateInfoPrinterLegacyPass()
-    : FunctionPass(ID) {
-  initializePredicateInfoPrinterLegacyPassPass(
-      *PassRegistry::getPassRegistry());
-}
-
-void PredicateInfoPrinterLegacyPass::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.setPreservesAll();
-  AU.addRequiredTransitive<DominatorTreeWrapperPass>();
-  AU.addRequired<AssumptionCacheTracker>();
-}
-
 // Replace ssa_copy calls created by PredicateInfo with their operand.
 static void replaceCreatedSSACopys(PredicateInfo &PredInfo, Function &F) {
   for (Instruction &Inst : llvm::make_early_inc_range(instructions(F))) {
@@ -862,18 +841,6 @@ static void replaceCreatedSSACopys(PredicateInfo &PredInfo, Function &F) {
   }
 }
 
-bool PredicateInfoPrinterLegacyPass::runOnFunction(Function &F) {
-  auto &DT = getAnalysis<DominatorTreeWrapperPass>().getDomTree();
-  auto &AC = getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F);
-  auto PredInfo = std::make_unique<PredicateInfo>(F, DT, AC);
-  PredInfo->print(dbgs());
-  if (VerifyPredicateInfo)
-    PredInfo->verifyPredicateInfo();
-
-  replaceCreatedSSACopys(*PredInfo, F);
-  return false;
-}
-
 PreservedAnalyses PredicateInfoPrinterPass::run(Function &F,
                                                 FunctionAnalysisManager &AM) {
   auto &DT = AM.getResult<DominatorTreeAnalysis>(F);
diff --git a/llvm/lib/Transforms/Utils/Utils.cpp b/llvm/lib/Transforms/Utils/Utils.cpp
index 5c47bae00ce231f..2d54d90d99e0809 100644
--- a/llvm/lib/Transforms/Utils/Utils.cpp
+++ b/llvm/lib/Transforms/Utils/Utils.cpp
@@ -30,7 +30,6 @@ void llvm::initializeTransformUtils(PassRegistry &Registry) {
   initializeLowerSwitchLegacyPassPass(Registry);
   initializePromoteLegacyPassPass(Registry);
   initializeStripGCRelocatesLegacyPass(Registry);
-  initializePredicateInfoPrinterLegacyPassPass(Registry);
   initializeFixIrreduciblePass(Registry);
   initializeUnifyLoopExitsLegacyPassPass(Registry);
 }