Remove the basic inliner. This was added in 2007, and hasn't really

changed since. No one was using it. It is yet another consumer of the
InlineCost interface that I'd like to change.

llvm-svn: 152769

1 files changed, 0 insertions, 182 deletions

diff --git a/llvm/lib/Transforms/Utils/BasicInliner.cpp b/llvm/lib/Transforms/Utils/BasicInliner.cpp
deleted file mode 100644
index 50c91b6af87..00000000000
--- a/llvm/lib/Transforms/Utils/BasicInliner.cpp
+++ /dev/null
@@ -1,182 +0,0 @@
-//===- BasicInliner.cpp - Basic function level inliner --------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines a simple function based inliner that does not use
-// call graph information. 
-//
-//===----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "basicinliner"
-#include "llvm/Module.h"
-#include "llvm/Function.h"
-#include "llvm/Transforms/Utils/BasicInliner.h"
-#include "llvm/Transforms/Utils/Cloning.h"
-#include "llvm/Support/CallSite.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/ADT/SmallPtrSet.h"
-#include <vector>
-
-using namespace llvm;
-
-static cl::opt<unsigned>     
-BasicInlineThreshold("basic-inline-threshold", cl::Hidden, cl::init(200),
-   cl::desc("Control the amount of basic inlining to perform (default = 200)"));
-
-namespace llvm {
-
-  /// BasicInlinerImpl - BasicInliner implemantation class. This hides
-  /// container info, used by basic inliner, from public interface.
-  struct BasicInlinerImpl {
-    
-    BasicInlinerImpl(const BasicInlinerImpl&); // DO NOT IMPLEMENT
-    void operator=(const BasicInlinerImpl&); // DO NO IMPLEMENT
-  public:
-    BasicInlinerImpl(TargetData *T) : TD(T) {}
-
-    /// addFunction - Add function into the list of functions to process.
-    /// All functions must be inserted using this interface before invoking
-    /// inlineFunctions().
-    void addFunction(Function *F) {
-      Functions.push_back(F);
-    }
-
-    /// neverInlineFunction - Sometimes a function is never to be inlined 
-    /// because of one or other reason. 
-    void neverInlineFunction(Function *F) {
-      NeverInline.insert(F);
-    }
-
-    /// inlineFuctions - Walk all call sites in all functions supplied by
-    /// client. Inline as many call sites as possible. Delete completely
-    /// inlined functions.
-    void inlineFunctions();
-    
-  private:
-    TargetData *TD;
-    std::vector<Function *> Functions;
-    SmallPtrSet<const Function *, 16> NeverInline;
-    SmallPtrSet<Function *, 8> DeadFunctions;
-    InlineCostAnalyzer CA;
-  };
-
-/// inlineFuctions - Walk all call sites in all functions supplied by
-/// client. Inline as many call sites as possible. Delete completely
-/// inlined functions.
-void BasicInlinerImpl::inlineFunctions() {
-      
-  // Scan through and identify all call sites ahead of time so that we only
-  // inline call sites in the original functions, not call sites that result
-  // from inlining other functions.
-  std::vector<CallSite> CallSites;
-  
-  for (std::vector<Function *>::iterator FI = Functions.begin(),
-         FE = Functions.end(); FI != FE; ++FI) {
-    Function *F = *FI;
-    for (Function::iterator BB = F->begin(), E = F->end(); BB != E; ++BB)
-      for (BasicBlock::iterator I = BB->begin(); I != BB->end(); ++I) {
-        CallSite CS(cast<Value>(I));
-        if (CS && CS.getCalledFunction()
-            && !CS.getCalledFunction()->isDeclaration())
-          CallSites.push_back(CS);
-      }
-  }
-  
-  DEBUG(dbgs() << ": " << CallSites.size() << " call sites.\n");
-  
-  // Inline call sites.
-  bool Changed = false;
-  do {
-    Changed = false;
-    for (unsigned index = 0; index != CallSites.size() && !CallSites.empty(); 
-         ++index) {
-      CallSite CS = CallSites[index];
-      if (Function *Callee = CS.getCalledFunction()) {
-        
-        // Eliminate calls that are never inlinable.
-        if (Callee->isDeclaration() ||
-            CS.getInstruction()->getParent()->getParent() == Callee) {
-          CallSites.erase(CallSites.begin() + index);
-          --index;
-          continue;
-        }
-        InlineCost IC = CA.getInlineCost(CS, NeverInline);
-        if (IC.isAlways()) {        
-          DEBUG(dbgs() << "  Inlining: cost=always"
-                       <<", call: " << *CS.getInstruction());
-        } else if (IC.isNever()) {
-          DEBUG(dbgs() << "  NOT Inlining: cost=never"
-                       <<", call: " << *CS.getInstruction());
-          continue;
-        } else {
-          int Cost = IC.getValue();
-          
-          if (Cost >= (int) BasicInlineThreshold) {
-            DEBUG(dbgs() << "  NOT Inlining: cost = " << Cost
-                         << ", call: " <<  *CS.getInstruction());
-            continue;
-          } else {
-            DEBUG(dbgs() << "  Inlining: cost = " << Cost
-                         << ", call: " <<  *CS.getInstruction());
-          }
-        }
-        
-        // Inline
-        InlineFunctionInfo IFI(0, TD);
-        if (InlineFunction(CS, IFI)) {
-          Callee->removeDeadConstantUsers();
-          if (Callee->isDefTriviallyDead())
-            DeadFunctions.insert(Callee);
-          Changed = true;
-          CallSites.erase(CallSites.begin() + index);
-          --index;
-        }
-      }
-    }
-  } while (Changed);
-  
-  // Remove completely inlined functions from module.
-  for(SmallPtrSet<Function *, 8>::iterator I = DeadFunctions.begin(),
-        E = DeadFunctions.end(); I != E; ++I) {
-    Function *D = *I;
-    Module *M = D->getParent();
-    M->getFunctionList().remove(D);
-  }
-}
-
-BasicInliner::BasicInliner(TargetData *TD) {
-  Impl = new BasicInlinerImpl(TD);
-}
-
-BasicInliner::~BasicInliner() {
-  delete Impl;
-}
-
-/// addFunction - Add function into the list of functions to process.
-/// All functions must be inserted using this interface before invoking
-/// inlineFunctions().
-void BasicInliner::addFunction(Function *F) {
-  Impl->addFunction(F);
-}
-
-/// neverInlineFunction - Sometimes a function is never to be inlined because
-/// of one or other reason. 
-void BasicInliner::neverInlineFunction(Function *F) {
-  Impl->neverInlineFunction(F);
-}
-
-/// inlineFuctions - Walk all call sites in all functions supplied by
-/// client. Inline as many call sites as possible. Delete completely
-/// inlined functions.
-void BasicInliner::inlineFunctions() {
-  Impl->inlineFunctions();
-}
-
-}