vendor/llvm/llvm-trunk-r351319

1 files changed, 87 insertions, 121 deletions

diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index dd668bcf6193..3495319670a5 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -99,6 +99,9 @@ static const char *getPropertyName(MachineFunctionProperties::Property Prop) {
   llvm_unreachable("Invalid machine function property");
 }
 
+// Pin the vtable to this file.
+void MachineFunction::Delegate::anchor() {}
+
 void MachineFunctionProperties::print(raw_ostream &OS) const {
   const char *Separator = "";
   for (BitVector::size_type I = 0; I < Properties.size(); ++I) {
@@ -127,7 +130,8 @@ static inline unsigned getFnStackAlignment(const TargetSubtargetInfo *STI,
   return STI->getFrameLowering()->getStackAlignment();
 }
 
-MachineFunction::MachineFunction(const Function &F, const TargetMachine &Target,
+MachineFunction::MachineFunction(const Function &F,
+                                 const LLVMTargetMachine &Target,
                                  const TargetSubtargetInfo &STI,
                                  unsigned FunctionNum, MachineModuleInfo &mmi)
     : F(F), Target(Target), STI(&STI), Ctx(mmi.getContext()), MMI(mmi) {
@@ -135,6 +139,16 @@ MachineFunction::MachineFunction(const Function &F, const TargetMachine &Target,
   init();
 }
 
+void MachineFunction::handleInsertion(MachineInstr &MI) {
+  if (TheDelegate)
+    TheDelegate->MF_HandleInsertion(MI);
+}
+
+void MachineFunction::handleRemoval(MachineInstr &MI) {
+  if (TheDelegate)
+    TheDelegate->MF_HandleRemoval(MI);
+}
+
 void MachineFunction::init() {
   // Assume the function starts in SSA form with correct liveness.
   Properties.set(MachineFunctionProperties::Property::IsSSA);
@@ -233,6 +247,11 @@ void MachineFunction::clear() {
     WinEHInfo->~WinEHFuncInfo();
     Allocator.Deallocate(WinEHInfo);
   }
+
+  if (WasmEHInfo) {
+    WasmEHInfo->~WasmEHFuncInfo();
+    Allocator.Deallocate(WasmEHInfo);
+  }
 }
 
 const DataLayout &MachineFunction::getDataLayout() const {
@@ -406,82 +425,17 @@ MachineFunction::getMachineMemOperand(const MachineMemOperand *MMO,
                                MMO->getOrdering(), MMO->getFailureOrdering());
 }
 
-MachineInstr::mmo_iterator
-MachineFunction::allocateMemRefsArray(unsigned long Num) {
-  return Allocator.Allocate<MachineMemOperand *>(Num);
-}
-
-std::pair<MachineInstr::mmo_iterator, MachineInstr::mmo_iterator>
-MachineFunction::extractLoadMemRefs(MachineInstr::mmo_iterator Begin,
-                                    MachineInstr::mmo_iterator End) {
-  // Count the number of load mem refs.
-  unsigned Num = 0;
-  for (MachineInstr::mmo_iterator I = Begin; I != End; ++I)
-    if ((*I)->isLoad())
-      ++Num;
-
-  // Allocate a new array and populate it with the load information.
-  MachineInstr::mmo_iterator Result = allocateMemRefsArray(Num);
-  unsigned Index = 0;
-  for (MachineInstr::mmo_iterator I = Begin; I != End; ++I) {
-    if ((*I)->isLoad()) {
-      if (!(*I)->isStore())
-        // Reuse the MMO.
-        Result[Index] = *I;
-      else {
-        // Clone the MMO and unset the store flag.
-        MachineMemOperand *JustLoad =
-          getMachineMemOperand((*I)->getPointerInfo(),
-                               (*I)->getFlags() & ~MachineMemOperand::MOStore,
-                               (*I)->getSize(), (*I)->getBaseAlignment(),
-                               (*I)->getAAInfo(), nullptr,
-                               (*I)->getSyncScopeID(), (*I)->getOrdering(),
-                               (*I)->getFailureOrdering());
-        Result[Index] = JustLoad;
-      }
-      ++Index;
-    }
-  }
-  return std::make_pair(Result, Result + Num);
-}
-
-std::pair<MachineInstr::mmo_iterator, MachineInstr::mmo_iterator>
-MachineFunction::extractStoreMemRefs(MachineInstr::mmo_iterator Begin,
-                                     MachineInstr::mmo_iterator End) {
-  // Count the number of load mem refs.
-  unsigned Num = 0;
-  for (MachineInstr::mmo_iterator I = Begin; I != End; ++I)
-    if ((*I)->isStore())
-      ++Num;
-
-  // Allocate a new array and populate it with the store information.
-  MachineInstr::mmo_iterator Result = allocateMemRefsArray(Num);
-  unsigned Index = 0;
-  for (MachineInstr::mmo_iterator I = Begin; I != End; ++I) {
-    if ((*I)->isStore()) {
-      if (!(*I)->isLoad())
-        // Reuse the MMO.
-        Result[Index] = *I;
-      else {
-        // Clone the MMO and unset the load flag.
-        MachineMemOperand *JustStore =
-          getMachineMemOperand((*I)->getPointerInfo(),
-                               (*I)->getFlags() & ~MachineMemOperand::MOLoad,
-                               (*I)->getSize(), (*I)->getBaseAlignment(),
-                               (*I)->getAAInfo(), nullptr,
-                               (*I)->getSyncScopeID(), (*I)->getOrdering(),
-                               (*I)->getFailureOrdering());
-        Result[Index] = JustStore;
-      }
-      ++Index;
-    }
-  }
-  return std::make_pair(Result, Result + Num);
+MachineInstr::ExtraInfo *
+MachineFunction::createMIExtraInfo(ArrayRef<MachineMemOperand *> MMOs,
+                                   MCSymbol *PreInstrSymbol,
+                                   MCSymbol *PostInstrSymbol) {
+  return MachineInstr::ExtraInfo::create(Allocator, MMOs, PreInstrSymbol,
+                                         PostInstrSymbol);
 }
 
 const char *MachineFunction::createExternalSymbolName(StringRef Name) {
   char *Dest = Allocator.Allocate<char>(Name.size() + 1);
-  std::copy(Name.begin(), Name.end(), Dest);
+  llvm::copy(Name, Dest);
   Dest[Name.size()] = 0;
   return Dest;
 }
@@ -678,6 +632,46 @@ MCSymbol *MachineFunction::addLandingPad(MachineBasicBlock *LandingPad) {
   MCSymbol *LandingPadLabel = Ctx.createTempSymbol();
   LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
   LP.LandingPadLabel = LandingPadLabel;
+
+  const Instruction *FirstI = LandingPad->getBasicBlock()->getFirstNonPHI();
+  if (const auto *LPI = dyn_cast<LandingPadInst>(FirstI)) {
+    if (const auto *PF =
+            dyn_cast<Function>(F.getPersonalityFn()->stripPointerCasts()))
+      getMMI().addPersonality(PF);
+
+    if (LPI->isCleanup())
+      addCleanup(LandingPad);
+
+    // FIXME: New EH - Add the clauses in reverse order. This isn't 100%
+    //        correct, but we need to do it this way because of how the DWARF EH
+    //        emitter processes the clauses.
+    for (unsigned I = LPI->getNumClauses(); I != 0; --I) {
+      Value *Val = LPI->getClause(I - 1);
+      if (LPI->isCatch(I - 1)) {
+        addCatchTypeInfo(LandingPad,
+                         dyn_cast<GlobalValue>(Val->stripPointerCasts()));
+      } else {
+        // Add filters in a list.
+        auto *CVal = cast<Constant>(Val);
+        SmallVector<const GlobalValue *, 4> FilterList;
+        for (User::op_iterator II = CVal->op_begin(), IE = CVal->op_end();
+             II != IE; ++II)
+          FilterList.push_back(cast<GlobalValue>((*II)->stripPointerCasts()));
+
+        addFilterTypeInfo(LandingPad, FilterList);
+      }
+    }
+
+  } else if (const auto *CPI = dyn_cast<CatchPadInst>(FirstI)) {
+    for (unsigned I = CPI->getNumArgOperands(); I != 0; --I) {
+      Value *TypeInfo = CPI->getArgOperand(I - 1)->stripPointerCasts();
+      addCatchTypeInfo(LandingPad, dyn_cast<GlobalValue>(TypeInfo));
+    }
+
+  } else {
+    assert(isa<CleanupPadInst>(FirstI) && "Invalid landingpad!");
+  }
+
   return LandingPadLabel;
 }
 
@@ -697,7 +691,8 @@ void MachineFunction::addFilterTypeInfo(MachineBasicBlock *LandingPad,
   LP.TypeIds.push_back(getFilterIDFor(IdsInFilter));
 }
 
-void MachineFunction::tidyLandingPads(DenseMap<MCSymbol*, uintptr_t> *LPMap) {
+void MachineFunction::tidyLandingPads(DenseMap<MCSymbol *, uintptr_t> *LPMap,
+                                      bool TidyIfNoBeginLabels) {
   for (unsigned i = 0; i != LandingPads.size(); ) {
     LandingPadInfo &LandingPad = LandingPads[i];
     if (LandingPad.LandingPadLabel &&
@@ -712,24 +707,25 @@ void MachineFunction::tidyLandingPads(DenseMap<MCSymbol*, uintptr_t> *LPMap) {
       continue;
     }
 
-    for (unsigned j = 0, e = LandingPads[i].BeginLabels.size(); j != e; ++j) {
-      MCSymbol *BeginLabel = LandingPad.BeginLabels[j];
-      MCSymbol *EndLabel = LandingPad.EndLabels[j];
-      if ((BeginLabel->isDefined() ||
-           (LPMap && (*LPMap)[BeginLabel] != 0)) &&
-          (EndLabel->isDefined() ||
-           (LPMap && (*LPMap)[EndLabel] != 0))) continue;
-
-      LandingPad.BeginLabels.erase(LandingPad.BeginLabels.begin() + j);
-      LandingPad.EndLabels.erase(LandingPad.EndLabels.begin() + j);
-      --j;
-      --e;
-    }
+    if (TidyIfNoBeginLabels) {
+      for (unsigned j = 0, e = LandingPads[i].BeginLabels.size(); j != e; ++j) {
+        MCSymbol *BeginLabel = LandingPad.BeginLabels[j];
+        MCSymbol *EndLabel = LandingPad.EndLabels[j];
+        if ((BeginLabel->isDefined() || (LPMap && (*LPMap)[BeginLabel] != 0)) &&
+            (EndLabel->isDefined() || (LPMap && (*LPMap)[EndLabel] != 0)))
+          continue;
+
+        LandingPad.BeginLabels.erase(LandingPad.BeginLabels.begin() + j);
+        LandingPad.EndLabels.erase(LandingPad.EndLabels.begin() + j);
+        --j;
+        --e;
+      }
 
-    // Remove landing pads with no try-ranges.
-    if (LandingPads[i].BeginLabels.empty()) {
-      LandingPads.erase(LandingPads.begin() + i);
-      continue;
+      // Remove landing pads with no try-ranges.
+      if (LandingPads[i].BeginLabels.empty()) {
+        LandingPads.erase(LandingPads.begin() + i);
+        continue;
+      }
     }
 
     // If there is no landing pad, ensure that the list of typeids is empty.
@@ -806,36 +802,6 @@ try_next:;
   return FilterID;
 }
 
-void llvm::addLandingPadInfo(const LandingPadInst &I, MachineBasicBlock &MBB) {
-  MachineFunction &MF = *MBB.getParent();
-  if (const auto *PF = dyn_cast<Function>(
-          I.getParent()->getParent()->getPersonalityFn()->stripPointerCasts()))
-    MF.getMMI().addPersonality(PF);
-
-  if (I.isCleanup())
-    MF.addCleanup(&MBB);
-
-  // FIXME: New EH - Add the clauses in reverse order. This isn't 100% correct,
-  //        but we need to do it this way because of how the DWARF EH emitter
-  //        processes the clauses.
-  for (unsigned i = I.getNumClauses(); i != 0; --i) {
-    Value *Val = I.getClause(i - 1);
-    if (I.isCatch(i - 1)) {
-      MF.addCatchTypeInfo(&MBB,
-                          dyn_cast<GlobalValue>(Val->stripPointerCasts()));
-    } else {
-      // Add filters in a list.
-      Constant *CVal = cast<Constant>(Val);
-      SmallVector<const GlobalValue *, 4> FilterList;
-      for (User::op_iterator II = CVal->op_begin(), IE = CVal->op_end();
-           II != IE; ++II)
-        FilterList.push_back(cast<GlobalValue>((*II)->stripPointerCasts()));
-
-      MF.addFilterTypeInfo(&MBB, FilterList);
-    }
-  }
-}
-
 /// \}
 
 //===----------------------------------------------------------------------===//