[llvm] [NewPM] Remove InstCountLegacyPass (PR #72936)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-analysis

Author: Aiden Grossman (boomanaiden154)

<details>
<summary>Changes</summary>

This pass isn't used/tested anywhere upstream, so remove it.

---
Full diff: https://github.com/llvm/llvm-project/pull/72936.diff


5 Files Affected:

- (modified) llvm/include/llvm/Analysis/Passes.h (-6) 
- (modified) llvm/include/llvm/InitializePasses.h (-1) 
- (modified) llvm/include/llvm/LinkAllPasses.h (-1) 
- (modified) llvm/lib/Analysis/Analysis.cpp (-1) 
- (modified) llvm/lib/Analysis/InstCount.cpp (-31) 


``````````diff
diff --git a/llvm/include/llvm/Analysis/Passes.h b/llvm/include/llvm/Analysis/Passes.h
index ac1bc3549910c8c..a8a86da1207020f 100644
--- a/llvm/include/llvm/Analysis/Passes.h
+++ b/llvm/include/llvm/Analysis/Passes.h
@@ -46,12 +46,6 @@ namespace llvm {
   //
   FunctionPass *createDelinearizationPass();
 
-  //===--------------------------------------------------------------------===//
-  //
-  // Minor pass prototypes, allowing us to expose them through bugpoint and
-  // analyze.
-  FunctionPass *createInstCountPass();
-
   //===--------------------------------------------------------------------===//
   //
   // createRegionInfoPass - This pass finds all single entry single exit regions
diff --git a/llvm/include/llvm/InitializePasses.h b/llvm/include/llvm/InitializePasses.h
index 2305db4f775d49c..e42ba3882481c8f 100644
--- a/llvm/include/llvm/InitializePasses.h
+++ b/llvm/include/llvm/InitializePasses.h
@@ -139,7 +139,6 @@ void initializeImmutableModuleSummaryIndexWrapperPassPass(PassRegistry&);
 void initializeImplicitNullChecksPass(PassRegistry&);
 void initializeIndirectBrExpandPassPass(PassRegistry&);
 void initializeInferAddressSpacesPass(PassRegistry&);
-void initializeInstCountLegacyPassPass(PassRegistry &);
 void initializeInstSimplifyLegacyPassPass(PassRegistry &);
 void initializeInstructionCombiningPassPass(PassRegistry&);
 void initializeInstructionSelectPass(PassRegistry&);
diff --git a/llvm/include/llvm/LinkAllPasses.h b/llvm/include/llvm/LinkAllPasses.h
index 0d15481034151df..fde484dfdf17b50 100644
--- a/llvm/include/llvm/LinkAllPasses.h
+++ b/llvm/include/llvm/LinkAllPasses.h
@@ -118,7 +118,6 @@ namespace {
       (void) llvm::createSingleLoopExtractorPass();
       (void) llvm::createTailCallEliminationPass();
       (void)llvm::createTLSVariableHoistPass();
-      (void) llvm::createInstCountPass();
       (void) llvm::createConstantHoistingPass();
       (void) llvm::createCodeGenPreparePass();
       (void) llvm::createEarlyCSEPass();
diff --git a/llvm/lib/Analysis/Analysis.cpp b/llvm/lib/Analysis/Analysis.cpp
index 80ea80303644449..a7b4a001a28bdea 100644
--- a/llvm/lib/Analysis/Analysis.cpp
+++ b/llvm/lib/Analysis/Analysis.cpp
@@ -45,7 +45,6 @@ void llvm::initializeAnalysis(PassRegistry &Registry) {
   initializeAAResultsWrapperPassPass(Registry);
   initializeGlobalsAAWrapperPassPass(Registry);
   initializeIVUsersWrapperPassPass(Registry);
-  initializeInstCountLegacyPassPass(Registry);
   initializeIntervalPartitionPass(Registry);
   initializeIRSimilarityIdentifierWrapperPassPass(Registry);
   initializeLazyBranchProbabilityInfoPassPass(Registry);
diff --git a/llvm/lib/Analysis/InstCount.cpp b/llvm/lib/Analysis/InstCount.cpp
index 8366bee083f225b..d427d3eeaa9e168 100644
--- a/llvm/lib/Analysis/InstCount.cpp
+++ b/llvm/lib/Analysis/InstCount.cpp
@@ -15,8 +15,6 @@
 #include "llvm/Analysis/Passes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/InstVisitor.h"
-#include "llvm/InitializePasses.h"
-#include "llvm/Pass.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
@@ -63,32 +61,3 @@ PreservedAnalyses InstCountPass::run(Function &F,
 
   return PreservedAnalyses::all();
 }
-
-namespace {
-class InstCountLegacyPass : public FunctionPass {
-public:
-  static char ID; // Pass identification, replacement for typeid
-  InstCountLegacyPass() : FunctionPass(ID) {
-    initializeInstCountLegacyPassPass(*PassRegistry::getPassRegistry());
-  }
-
-  bool runOnFunction(Function &F) override {
-    LLVM_DEBUG(dbgs() << "INSTCOUNT: running on function " << F.getName()
-                      << "\n");
-    InstCount().visit(F);
-    return false;
-  };
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.setPreservesAll();
-  }
-
-  void print(raw_ostream &O, const Module *M) const override {}
-};
-} // namespace
-
-char InstCountLegacyPass::ID = 0;
-INITIALIZE_PASS(InstCountLegacyPass, "instcount",
-                "Counts the various types of Instructions", false, true)
-
-FunctionPass *llvm::createInstCountPass() { return new InstCountLegacyPass(); }

``````````

</details>


https://github.com/llvm/llvm-project/pull/72936