[CallSite removal] Port `IndirectCallSiteVisitor` to use `CallBase` and update client code.

[chandlerc]

Summary

Also rename it to use the more generic term call instead of something
that could be confused with a praticular type.

Depends on D56182.

[compnerd]

llvm/lib/IR/Instructions.cpp

264

Braces aren't needed.

[chandlerc]

Address review comment.

[chandlerc]

Thanks for review. Will land when preceding patches go in.

llvm/include/llvm/Analysis/IndirectCallSiteVisitor.h

-//===-- IndirectCallSiteVisitor.h - indirect call-sites visitor -----------===//
-//
-//                      The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements defines a visitor class and a helper function that find
-// all indirect call-sites in a function.
-
-#ifndef LLVM_ANALYSIS_INDIRECTCALLSITEVISITOR_H
-#define LLVM_ANALYSIS_INDIRECTCALLSITEVISITOR_H
-
-#include "llvm/IR/InstVisitor.h"
-#include <vector>
-
-namespace llvm {
-// Visitor class that finds all indirect call sites.
-struct PGOIndirectCallSiteVisitor
-    : public InstVisitor<PGOIndirectCallSiteVisitor> {
-  std::vector<Instruction *> IndirectCallInsts;
-  PGOIndirectCallSiteVisitor() {}
-
-  void visitCallSite(CallSite CS) {
-    if (CS.isIndirectCall())
-      IndirectCallInsts.push_back(CS.getInstruction());
-  }
-};
-
-// Helper function that finds all indirect call sites.
-inline std::vector<Instruction *> findIndirectCallSites(Function &F) {
-  PGOIndirectCallSiteVisitor ICV;
-  ICV.visit(F);
-  return ICV.IndirectCallInsts;
-}
-}
-
-#endif

llvm/include/llvm/Analysis/IndirectCallVisitor.h

+//===-- IndirectCallVisitor.h - indirect call visitor ---------------------===//
+//
+//                      The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements defines a visitor class and a helper function that find
+// all indirect call-sites in a function.
+
+#ifndef LLVM_ANALYSIS_INDIRECTCALLVISITOR_H
+#define LLVM_ANALYSIS_INDIRECTCALLVISITOR_H
+
+#include "llvm/IR/InstVisitor.h"
+#include <vector>
+
+namespace llvm {
+// Visitor class that finds all indirect call.
+struct PGOIndirectCallVisitor : public InstVisitor<PGOIndirectCallVisitor> {
+  std::vector<Instruction *> IndirectCalls;
+  PGOIndirectCallVisitor() {}
+
+  void visitCallBase(CallBase &Call) {
+    if (Call.isIndirectCall())
+      IndirectCalls.push_back(&Call);
+  }
+};
+
+// Helper function that finds all indirect call sites.
+inline std::vector<Instruction *> findIndirectCalls(Function &F) {
+  PGOIndirectCallVisitor ICV;
+  ICV.visit(F);
+  return ICV.IndirectCalls;
+}
+} // namespace llvm
+
+#endif

llvm/include/llvm/IR/InstrTypes.h

public:
   Use &getCalledOperandUse() { return Op<CalledOperandOpEndIdx>(); }
 
   /// Returns the function called, or null if this is an
   /// indirect function invocation.
   Function *getCalledFunction() const {
     return dyn_cast_or_null<Function>(getCalledOperand());
   }
 
+  /// Return true if the callsite is an indirect call.
+  bool isIndirectCall() const;
+
   /// Helper to get the caller (the parent function).
   Function *getCaller();
   const Function *getCaller() const {
     return const_cast<CallBase *>(this)->getCaller();
   }
 
   /// Returns the intrinsic ID of the intrinsic called or
   /// Intrinsic::not_intrinsic if the called function is not an intrinsic, or if

llvm/lib/Analysis/IndirectCallPromotionAnalysis.cpp

 // Helper methods for identifying profitable indirect call promotion
 // candidates for an instruction when the indirect-call value profile metadata
 // is available.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/IndirectCallPromotionAnalysis.h"
 #include "llvm/ADT/STLExtras.h"
-#include "llvm/Analysis/IndirectCallSiteVisitor.h"
+#include "llvm/Analysis/IndirectCallVisitor.h"
 #include "llvm/IR/CallSite.h"
 #include "llvm/IR/InstIterator.h"
 #include "llvm/IR/InstVisitor.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/ProfileData/InstrProf.h"
 #include "llvm/Support/Debug.h"
 #include <string>

llvm/lib/IR/Instructions.cpp

 }
 
 //===----------------------------------------------------------------------===//
 //                        CallBase Implementation
 //===----------------------------------------------------------------------===//
 
 Function *CallBase::getCaller() { return getParent()->getParent(); }
 
+bool CallBase::isIndirectCall() const {
+  const Value *V = getCalledValue();
+  if (isa<Function>(V) || isa<Constant>(V))
+    return false;
+  if (const CallInst *CI = dyn_cast<CallInst>(this))
+    if (CI->isInlineAsm())
+      return false;
+  return true;
+}
+
 Intrinsic::ID CallBase::getIntrinsicID() const {
   if (auto *F = getCalledFunction())
     return F->getIntrinsicID();
   return Intrinsic::not_intrinsic;
 }
 
 bool CallBase::isReturnNonNull() const {
   if (hasRetAttr(Attribute::NonNull))

llvm/lib/Transforms/Instrumentation/IndirectCallPromotion.cpp

 //===----------------------------------------------------------------------===//
 
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Analysis/IndirectCallPromotionAnalysis.h"
-#include "llvm/Analysis/IndirectCallSiteVisitor.h"
+#include "llvm/Analysis/IndirectCallVisitor.h"
 #include "llvm/Analysis/OptimizationRemarkEmitter.h"
 #include "llvm/Analysis/ProfileSummaryInfo.h"
 #include "llvm/IR/Attributes.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/CallSite.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/DiagnosticInfo.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/InstrTypes.h"
 #include "llvm/IR/Instruction.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/MDBuilder.h"
 #include "llvm/IR/PassManager.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Value.h"
 #include "llvm/Pass.h"
 #include "llvm/ProfileData/InstrProf.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Error.h"
 #include "llvm/Support/Debug.h"
+#include "llvm/Support/Error.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Transforms/Instrumentation.h"
 #include "llvm/Transforms/Instrumentation/PGOInstrumentation.h"
 #include "llvm/Transforms/Utils/BasicBlockUtils.h"
 #include "llvm/Transforms/Utils/CallPromotionUtils.h"
 #include <cassert>
 #include <cstdint>
 #include <memory>
uint32_t ICallPromotionFunc::tryToPromote(
   return NumPromoted;
 }
 
 // Traverse all the indirect-call callsite and get the value profile
 // annotation to perform indirect-call promotion.
 bool ICallPromotionFunc::processFunction(ProfileSummaryInfo *PSI) {
   bool Changed = false;
   ICallPromotionAnalysis ICallAnalysis;
-  for (auto &I : findIndirectCallSites(F)) {
+  for (auto &I : findIndirectCalls(F)) {
     uint32_t NumVals, NumCandidates;
     uint64_t TotalCount;
     auto ICallProfDataRef = ICallAnalysis.getPromotionCandidatesForInstruction(
         I, NumVals, TotalCount, NumCandidates);
     if (!NumCandidates ||
         (PSI && PSI->hasProfileSummary() && !PSI->isHotCount(TotalCount)))
       continue;
     auto PromotionCandidates = getPromotionCandidatesForCallSite(

llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp

 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/Triple.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/ADT/iterator.h"
 #include "llvm/ADT/iterator_range.h"
 #include "llvm/Analysis/BlockFrequencyInfo.h"
 #include "llvm/Analysis/BranchProbabilityInfo.h"
 #include "llvm/Analysis/CFG.h"
-#include "llvm/Analysis/IndirectCallSiteVisitor.h"
+#include "llvm/Analysis/IndirectCallVisitor.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/OptimizationRemarkEmitter.h"
 #include "llvm/IR/Attributes.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/CFG.h"
 #include "llvm/IR/CallSite.h"
 #include "llvm/IR/Comdat.h"
 #include "llvm/IR/Constant.h"
FuncPGOInstrumentation(
       BlockFrequencyInfo *BFI = nullptr)
       : F(Func), ComdatMembers(ComdatMembers), ValueSites(IPVK_Last + 1),
         SIVisitor(Func), MIVisitor(Func), MST(F, BPI, BFI) {
     // This should be done before CFG hash computation.
     SIVisitor.countSelects(Func);
     MIVisitor.countMemIntrinsics(Func);
     NumOfPGOSelectInsts += SIVisitor.getNumOfSelectInsts();
     NumOfPGOMemIntrinsics += MIVisitor.getNumOfMemIntrinsics();
-    ValueSites[IPVK_IndirectCallTarget] = findIndirectCallSites(Func);
+    ValueSites[IPVK_IndirectCallTarget] = findIndirectCalls(Func);
     ValueSites[IPVK_MemOPSize] = MIVisitor.findMemIntrinsics(Func);
 
     FuncName = getPGOFuncName(F);
     computeCFGHash();
     if (!ComdatMembers.empty())
       renameComdatFunction();
     LLVM_DEBUG(dumpInfo("after CFGMST"));
 
static void instrumentOneFunc(
   // Now instrument select instructions:
   FuncInfo.SIVisitor.instrumentSelects(F, &I, NumCounters, FuncInfo.FuncNameVar,
                                        FuncInfo.FunctionHash);
   assert(I == NumCounters);
 
   if (DisableValueProfiling)
     return;
 
-  unsigned NumIndirectCallSites = 0;
+  unsigned NumIndirectCalls = 0;
   for (auto &I : FuncInfo.ValueSites[IPVK_IndirectCallTarget]) {
     CallSite CS(I);
     Value *Callee = CS.getCalledValue();
     LLVM_DEBUG(dbgs() << "Instrument one indirect call: CallSite Index = "
-                      << NumIndirectCallSites << "\n");
+                      << NumIndirectCalls << "\n");
     IRBuilder<> Builder(I);
     assert(Builder.GetInsertPoint() != I->getParent()->end() &&
            "Cannot get the Instrumentation point");
     Builder.CreateCall(
         Intrinsic::getDeclaration(M, Intrinsic::instrprof_value_profile),
         {ConstantExpr::getBitCast(FuncInfo.FuncNameVar, I8PtrTy),
          Builder.getInt64(FuncInfo.FunctionHash),
          Builder.CreatePtrToInt(Callee, Builder.getInt64Ty()),
          Builder.getInt32(IPVK_IndirectCallTarget),
-         Builder.getInt32(NumIndirectCallSites++)});
+         Builder.getInt32(NumIndirectCalls++)});
   }
-  NumOfPGOICall += NumIndirectCallSites;
+  NumOfPGOICall += NumIndirectCalls;
 
   // Now instrument memop intrinsic calls.
   FuncInfo.MIVisitor.instrumentMemIntrinsics(
       F, NumCounters, FuncInfo.FuncNameVar, FuncInfo.FunctionHash);
 }
 
 namespace {