1 files changed, 0 insertions, 139 deletions
diff --git a/llvm/lib/Analysis/LibCallAliasAnalysis.cpp b/llvm/lib/Analysis/LibCallAliasAnalysis.cpp
deleted file mode 100644
index 0c58e7ca4dc..00000000000
--- a/llvm/lib/Analysis/LibCallAliasAnalysis.cpp
+++ /dev/null
@@ -1,139 +0,0 @@
-//===- LibCallAliasAnalysis.cpp - Implement AliasAnalysis for libcalls ----===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the LibCallAliasAnalysis class.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Analysis/LibCallAliasAnalysis.h"
-#include "llvm/Analysis/LibCallSemantics.h"
-#include "llvm/IR/Function.h"
-#include "llvm/Pass.h"
-using namespace llvm;
-  
-char LibCallAliasAnalysis::ID = 0;
-INITIALIZE_AG_PASS(LibCallAliasAnalysis, AliasAnalysis, "libcall-aa",
-                   "LibCall Alias Analysis", false, true, false)
-
-FunctionPass *llvm::createLibCallAliasAnalysisPass(LibCallInfo *LCI) {
-  return new LibCallAliasAnalysis(LCI);
-}
-
-LibCallAliasAnalysis::~LibCallAliasAnalysis() { delete LCI; }
-
-void LibCallAliasAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
-  AliasAnalysis::getAnalysisUsage(AU);
-  AU.setPreservesAll(); // Does not transform code
-}
-
-bool LibCallAliasAnalysis::runOnFunction(Function &F) {
-  // set up super class
-  InitializeAliasAnalysis(this, &F.getParent()->getDataLayout());
-  return false;
-}
-
-/// Given a call to a function with the specified LibCallFunctionInfo, see if
-/// we can improve the mod/ref footprint of the call vs the specified
-/// pointer/size.
-ModRefInfo
-LibCallAliasAnalysis::AnalyzeLibCallDetails(const LibCallFunctionInfo *FI,
-                                            ImmutableCallSite CS,
-                                            const MemoryLocation &Loc) {
-  // If we have a function, check to see what kind of mod/ref effects it
-  // has.  Start by including any info globally known about the function.
-  ModRefInfo MRInfo = FI->UniversalBehavior;
-  if (MRInfo == MRI_NoModRef)
-    return MRInfo;
-
-  // If that didn't tell us that the function is 'readnone', check to see
-  // if we have detailed info and if 'P' is any of the locations we know
-  // about.
-  const LibCallFunctionInfo::LocationMRInfo *Details = FI->LocationDetails;
-  if (Details == nullptr)
-    return MRInfo;
-
-  // If the details array is of the 'DoesNot' kind, we only know something if
-  // the pointer is a match for one of the locations in 'Details'.  If we find a
-  // match, we can prove some interactions cannot happen.
-  //
-  if (FI->DetailsType == LibCallFunctionInfo::DoesNot) {
-    // Find out if the pointer refers to a known location.
-    for (unsigned i = 0; Details[i].LocationID != ~0U; ++i) {
-      const LibCallLocationInfo &LocInfo =
-          LCI->getLocationInfo(Details[i].LocationID);
-      LibCallLocationInfo::LocResult Res = LocInfo.isLocation(CS, Loc);
-      if (Res != LibCallLocationInfo::Yes)
-        continue;
-
-      // If we find a match against a location that we 'do not' interact with,
-      // learn this info into MRInfo.
-      return ModRefInfo(MRInfo & ~Details[i].MRInfo);
-    }
-    return MRInfo;
-  }
-
-  // If the details are of the 'DoesOnly' sort, we know something if the pointer
-  // is a match for one of the locations in 'Details'.  Also, if we can prove
-  // that the pointers is *not* one of the locations in 'Details', we know that
-  // the call is MRI_NoModRef.
-  assert(FI->DetailsType == LibCallFunctionInfo::DoesOnly);
-
-  // Find out if the pointer refers to a known location.
-  bool NoneMatch = true;
-  for (unsigned i = 0; Details[i].LocationID != ~0U; ++i) {
-    const LibCallLocationInfo &LocInfo =
-        LCI->getLocationInfo(Details[i].LocationID);
-    LibCallLocationInfo::LocResult Res = LocInfo.isLocation(CS, Loc);
-    if (Res == LibCallLocationInfo::No)
-      continue;
-
-    // If we don't know if this pointer points to the location, then we have to
-    // assume it might alias in some case.
-    if (Res == LibCallLocationInfo::Unknown) {
-      NoneMatch = false;
-      continue;
-    }
-
-    // If we know that this pointer definitely is pointing into the location,
-    // merge in this information.
-    return ModRefInfo(MRInfo & Details[i].MRInfo);
-  }
-
-  // If we found that the pointer is guaranteed to not match any of the
-  // locations in our 'DoesOnly' rule, then we know that the pointer must point
-  // to some other location.  Since the libcall doesn't mod/ref any other
-  // locations, return MRI_NoModRef.
-  if (NoneMatch)
-    return MRI_NoModRef;
-
-  // Otherwise, return any other info gained so far.
-  return MRInfo;
-}
-
-/// Check to see if the specified callsite can clobber the specified memory
-/// object.
-ModRefInfo LibCallAliasAnalysis::getModRefInfo(ImmutableCallSite CS,
-                                               const MemoryLocation &Loc) {
-  ModRefInfo MRInfo = MRI_ModRef;
-
-  // If this is a direct call to a function that LCI knows about, get the
-  // information about the runtime function.
-  if (LCI) {
-    if (const Function *F = CS.getCalledFunction()) {
-      if (const LibCallFunctionInfo *FI = LCI->getFunctionInfo(F)) {
-        MRInfo = ModRefInfo(MRInfo & AnalyzeLibCallDetails(FI, CS, Loc));
-        if (MRInfo == MRI_NoModRef)
-          return MRI_NoModRef;
-      }
-    }
-  }
-
-  // The AliasAnalysis base class has some smarts, lets use them.
-  return (ModRefInfo)(MRInfo | AliasAnalysis::getModRefInfo(CS, Loc));
-}