Taints the non-acquire RMW's store address with the load part

[oota-llvm.git] / lib / CodeGen / AsmPrinter / ARMException.cpp

diff --git a/lib/CodeGen/AsmPrinter/ARMException.cpp b/lib/CodeGen/AsmPrinter/ARMException.cpp
index 4aed1ccfc0418adbac2310d108386a071ecd83cd..ade2d7105b884d5c09eaa035a51c8ea48de14e2c 100644 (file)
--- a/lib/CodeGen/AsmPrinter/ARMException.cpp
+++ b/lib/CodeGen/AsmPrinter/ARMException.cpp
@@ -36,95 +36,94 @@
 #include "llvm/Target/TargetRegisterInfo.h"
 using namespace llvm;
 
-static cl::opt<bool>
-EnableARMEHABIDescriptors("arm-enable-ehabi-descriptors", cl::Hidden,
-  cl::desc("Generate ARM EHABI tables with unwinding descriptors"),
-  cl::init(false));
-
-
-ARMException::ARMException(AsmPrinter *A)
-  : DwarfException(A) {}
+ARMException::ARMException(AsmPrinter *A) : DwarfCFIExceptionBase(A) {}
 
 ARMException::~ARMException() {}
 
 ARMTargetStreamer &ARMException::getTargetStreamer() {
-  MCTargetStreamer &TS = Asm->OutStreamer.getTargetStreamer();
+  MCTargetStreamer &TS = *Asm->OutStreamer->getTargetStreamer();
   return static_cast<ARMTargetStreamer &>(TS);
 }
 
+/// endModule - Emit all exception information that should come after the
+/// content.
 void ARMException::endModule() {
+  if (shouldEmitCFI)
+    Asm->OutStreamer->EmitCFISections(false, true);
 }
 
-/// beginFunction - Gather pre-function exception information. Assumes it's
-/// being emitted immediately after the function entry point.
 void ARMException::beginFunction(const MachineFunction *MF) {
-  getTargetStreamer().emitFnStart();
-  if (Asm->MF->getFunction()->needsUnwindTableEntry())
-    Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_begin",
-                                                  Asm->getFunctionNumber()));
+  if (Asm->MAI->getExceptionHandlingType() == ExceptionHandling::ARM)
+    getTargetStreamer().emitFnStart();
+  // See if we need call frame info.
+  AsmPrinter::CFIMoveType MoveType = Asm->needsCFIMoves();
+  assert(MoveType != AsmPrinter::CFI_M_EH &&
+         "non-EH CFI not yet supported in prologue with EHABI lowering");
+  if (MoveType == AsmPrinter::CFI_M_Debug) {
+    shouldEmitCFI = true;
+    Asm->OutStreamer->EmitCFIStartProc(false);
+  }
 }
 
 /// endFunction - Gather and emit post-function exception information.
 ///
-void ARMException::endFunction(const MachineFunction *) {
+void ARMException::endFunction(const MachineFunction *MF) {
   ARMTargetStreamer &ATS = getTargetStreamer();
-  if (!Asm->MF->getFunction()->needsUnwindTableEntry())
+  const Function *F = MF->getFunction();
+  const Function *Per = nullptr;
+  if (F->hasPersonalityFn())
+    Per = dyn_cast<Function>(F->getPersonalityFn()->stripPointerCasts());
+  bool forceEmitPersonality =
+    F->hasPersonalityFn() && !isNoOpWithoutInvoke(classifyEHPersonality(Per)) &&
+    F->needsUnwindTableEntry();
+  bool shouldEmitPersonality = forceEmitPersonality ||
+    !MMI->getLandingPads().empty();
+  if (!Asm->MF->getFunction()->needsUnwindTableEntry() &&
+      !shouldEmitPersonality)
     ATS.emitCantUnwind();
-  else {
-    Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_end",
-                                                  Asm->getFunctionNumber()));
-
-    if (EnableARMEHABIDescriptors) {
-      // Map all labels and get rid of any dead landing pads.
-      MMI->TidyLandingPads();
-
-      if (!MMI->getLandingPads().empty()) {
-        // Emit references to personality.
-        if (const Function * Personality =
-            MMI->getPersonalities()[MMI->getPersonalityIndex()]) {
-          MCSymbol *PerSym = Asm->getSymbol(Personality);
-          Asm->OutStreamer.EmitSymbolAttribute(PerSym, MCSA_Global);
-          ATS.emitPersonality(PerSym);
-        }
-
-        // Emit .handlerdata directive.
-        ATS.emitHandlerData();
-
-        // Emit actual exception table
-        EmitExceptionTable();
-      }
+  else if (shouldEmitPersonality) {
+    // Emit references to personality.
+    if (Per) {
+      MCSymbol *PerSym = Asm->getSymbol(Per);
+      Asm->OutStreamer->EmitSymbolAttribute(PerSym, MCSA_Global);
+      ATS.emitPersonality(PerSym);
     }
+
+    // Emit .handlerdata directive.
+    ATS.emitHandlerData();
+
+    // Emit actual exception table
+    emitExceptionTable();
   }
 
-  ATS.emitFnEnd();
+  if (Asm->MAI->getExceptionHandlingType() == ExceptionHandling::ARM)
+    ATS.emitFnEnd();
 }
 
-void ARMException::EmitTypeInfos(unsigned TTypeEncoding) {
-  const std::vector<const GlobalVariable *> &TypeInfos = MMI->getTypeInfos();
+void ARMException::emitTypeInfos(unsigned TTypeEncoding) {
+  const std::vector<const GlobalValue *> &TypeInfos = MMI->getTypeInfos();
   const std::vector<unsigned> &FilterIds = MMI->getFilterIds();
 
-  bool VerboseAsm = Asm->OutStreamer.isVerboseAsm();
+  bool VerboseAsm = Asm->OutStreamer->isVerboseAsm();
 
   int Entry = 0;
   // Emit the Catch TypeInfos.
   if (VerboseAsm && !TypeInfos.empty()) {
-    Asm->OutStreamer.AddComment(">> Catch TypeInfos <<");
-    Asm->OutStreamer.AddBlankLine();
+    Asm->OutStreamer->AddComment(">> Catch TypeInfos <<");
+    Asm->OutStreamer->AddBlankLine();
     Entry = TypeInfos.size();
   }
 
-  for (std::vector<const GlobalVariable *>::const_reverse_iterator
-         I = TypeInfos.rbegin(), E = TypeInfos.rend(); I != E; ++I) {
-    const GlobalVariable *GV = *I;
+  for (const GlobalValue *GV : reverse(TypeInfos)) {
     if (VerboseAsm)
-      Asm->OutStreamer.AddComment("TypeInfo " + Twine(Entry--));
+      Asm->OutStreamer->AddComment("TypeInfo " + Twine(Entry--));
     Asm->EmitTTypeReference(GV, TTypeEncoding);
   }
 
   // Emit the Exception Specifications.
   if (VerboseAsm && !FilterIds.empty()) {
-    Asm->OutStreamer.AddComment(">> Filter TypeInfos <<");
-    Asm->OutStreamer.AddBlankLine();
+    Asm->OutStreamer->AddComment(">> Filter TypeInfos <<");
+    Asm->OutStreamer->AddBlankLine();
     Entry = 0;
   }
   for (std::vector<unsigned>::const_iterator
@@ -133,10 +132,10 @@ void ARMException::EmitTypeInfos(unsigned TTypeEncoding) {
     if (VerboseAsm) {
       --Entry;
       if (TypeID != 0)
-        Asm->OutStreamer.AddComment("FilterInfo " + Twine(Entry));
+        Asm->OutStreamer->AddComment("FilterInfo " + Twine(Entry));
     }
 
-    Asm->EmitTTypeReference((TypeID == 0 ? 0 : TypeInfos[TypeID - 1]),
+    Asm->EmitTTypeReference((TypeID == 0 ? nullptr : TypeInfos[TypeID - 1]),
                             TTypeEncoding);
   }
 }