Fix a pair of use after free. Should bring the bots back.

[oota-llvm.git] / lib / CodeGen / AsmPrinter / Win64Exception.cpp

diff --git a/lib/CodeGen/AsmPrinter/Win64Exception.cpp b/lib/CodeGen/AsmPrinter/Win64Exception.cpp
index 8ef4587836fe52e0b0b3decaa199c4568ac176ca..81285d55d63628e92f2750351219be3fe628008f 100644 (file)
--- a/lib/CodeGen/AsmPrinter/Win64Exception.cpp
+++ b/lib/CodeGen/AsmPrinter/Win64Exception.cpp
@@ -12,48 +12,45 @@
 //===----------------------------------------------------------------------===//
 
 #include "DwarfException.h"
-#include "llvm/Module.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Twine.h"
 #include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/Mangler.h"
+#include "llvm/IR/Module.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCExpr.h"
 #include "llvm/MC/MCSection.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
-#include "llvm/Target/Mangler.h"
-#include "llvm/Target/TargetData.h"
+#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FormattedStream.h"
 #include "llvm/Target/TargetFrameLowering.h"
 #include "llvm/Target/TargetLoweringObjectFile.h"
-#include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetOptions.h"
 #include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/Support/Dwarf.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/FormattedStream.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/ADT/Twine.h"
 using namespace llvm;
 
 Win64Exception::Win64Exception(AsmPrinter *A)
-  : DwarfException(A),
-    shouldEmitPersonality(false), shouldEmitLSDA(false), shouldEmitMoves(false)
-    {}
+  : EHStreamer(A), shouldEmitPersonality(false), shouldEmitLSDA(false),
+    shouldEmitMoves(false) {}
 
 Win64Exception::~Win64Exception() {}
 
-/// EndModule - Emit all exception information that should come after the
+/// endModule - Emit all exception information that should come after the
 /// content.
-void Win64Exception::EndModule() {
+void Win64Exception::endModule() {
 }
 
-/// BeginFunction - Gather pre-function exception information. Assumes it's
+/// beginFunction - Gather pre-function exception information. Assumes it's
 /// being emitted immediately after the function entry point.
-void Win64Exception::BeginFunction(const MachineFunction *MF) {
+void Win64Exception::beginFunction(const MachineFunction *MF) {
   shouldEmitMoves = shouldEmitPersonality = shouldEmitLSDA = false;
 
   // If any landing pads survive, we need an EH table.
@@ -75,21 +72,36 @@ void Win64Exception::BeginFunction(const MachineFunction *MF) {
   if (!shouldEmitPersonality && !shouldEmitMoves)
     return;
 
-  Asm->OutStreamer.EmitWin64EHStartProc(Asm->CurrentFnSym);
+  Asm->OutStreamer.EmitWinCFIStartProc(Asm->CurrentFnSym);
 
   if (!shouldEmitPersonality)
     return;
 
-  MCSymbol *GCCHandlerSym =
-    Asm->GetExternalSymbolSymbol("_GCC_specific_handler");
-  Asm->OutStreamer.EmitWin64EHHandler(GCCHandlerSym, true, true);
+  const MCSymbol *PersHandlerSym =
+      TLOF.getCFIPersonalitySymbol(Per, *Asm->Mang, Asm->TM, MMI);
+  Asm->OutStreamer.EmitWinEHHandler(PersHandlerSym, true, true);
+
+  Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_begin",
+                                                Asm->getFunctionNumber()));
 }
 
-/// EndFunction - Gather and emit post-function exception information.
+/// endFunction - Gather and emit post-function exception information.
 ///
-void Win64Exception::EndFunction() {
+void Win64Exception::endFunction(const MachineFunction *) {
   if (!shouldEmitPersonality && !shouldEmitMoves)
     return;
 
-  Asm->OutStreamer.EmitWin64EHEndProc();
+  Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_end",
+                                                Asm->getFunctionNumber()));
+
+  // Map all labels and get rid of any dead landing pads.
+  MMI->TidyLandingPads();
+
+  if (shouldEmitPersonality) {
+    Asm->OutStreamer.PushSection();
+    Asm->OutStreamer.EmitWinEHHandlerData();
+    emitExceptionTable();
+    Asm->OutStreamer.PopSection();
+  }
+  Asm->OutStreamer.EmitWinCFIEndProc();
 }