Revert "Re-commit r192758 - MC: quote tricky symbol names in asm output"

[oota-llvm.git] / lib / Target / X86 / X86AsmPrinter.cpp

diff --git a/lib/Target/X86/X86AsmPrinter.cpp b/lib/Target/X86/X86AsmPrinter.cpp
index ac5daec2b25e30520450affcdc267fcdc34f888c..7d7a1add2219a1ce69846b52991241ae0062eb44 100644 (file)
--- a/lib/Target/X86/X86AsmPrinter.cpp
+++ b/lib/Target/X86/X86AsmPrinter.cpp
@@ -201,7 +201,7 @@ void X86AsmPrinter::printSymbolOperand(const MachineOperand &MO,
   case X86II::MO_TLVP_PIC_BASE:
     O << "@TLVP" << '-' << *MF->getPICBaseSymbol();
     break;
-  case X86II::MO_SECREL:      O << "@SECREL";      break;
+  case X86II::MO_SECREL:    O << "@SECREL32";  break;
   }
 }
 
@@ -518,6 +518,26 @@ bool X86AsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
 void X86AsmPrinter::EmitStartOfAsmFile(Module &M) {
   if (Subtarget->isTargetEnvMacho())
     OutStreamer.SwitchSection(getObjFileLowering().getTextSection());
+
+  if (Subtarget->isTargetCOFF()) {
+    // Emit an absolute @feat.00 symbol.  This appears to be some kind of
+    // compiler features bitfield read by link.exe.
+    if (!Subtarget->is64Bit()) {
+      MCSymbol *S = MMI->getContext().GetOrCreateSymbol(StringRef("@feat.00"));
+      OutStreamer.BeginCOFFSymbolDef(S);
+      OutStreamer.EmitCOFFSymbolStorageClass(COFF::IMAGE_SYM_CLASS_STATIC);
+      OutStreamer.EmitCOFFSymbolType(COFF::IMAGE_SYM_DTYPE_NULL);
+      OutStreamer.EndCOFFSymbolDef();
+      // According to the PE-COFF spec, the LSB of this value marks the object
+      // for "registered SEH".  This means that all SEH handler entry points
+      // must be registered in .sxdata.  Use of any unregistered handlers will
+      // cause the process to terminate immediately.  LLVM does not know how to
+      // register any SEH handlers, so its object files should be safe.
+      S->setAbsolute();
+      OutStreamer.EmitAssignment(
+          S, MCConstantExpr::Create(int64_t(1), MMI->getContext()));
+    }
+  }
 }
 
 
@@ -702,48 +722,6 @@ void X86AsmPrinter::EmitEndOfAsmFile(Module &M) {
   }
 }
 
-MachineLocation
-X86AsmPrinter::getDebugValueLocation(const MachineInstr *MI) const {
-  MachineLocation Location;
-  assert (MI->getNumOperands() == 7 && "Invalid no. of machine operands!");
-  // Frame address.  Currently handles register +- offset only.
-
-  if (MI->getOperand(0).isReg() && MI->getOperand(3).isImm())
-    Location.set(MI->getOperand(0).getReg(), MI->getOperand(3).getImm());
-  else {
-    DEBUG(dbgs() << "DBG_VALUE instruction ignored! " << *MI << "\n");
-  }
-  return Location;
-}
-
-void X86AsmPrinter::PrintDebugValueComment(const MachineInstr *MI,
-                                           raw_ostream &O) {
-  // Only the target-dependent form of DBG_VALUE should get here.
-  // Referencing the offset and metadata as NOps-2 and NOps-1 is
-  // probably portable to other targets; frame pointer location is not.
-  unsigned NOps = MI->getNumOperands();
-  assert(NOps==7);
-  O << '\t' << MAI->getCommentString() << "DEBUG_VALUE: ";
-  // cast away const; DIetc do not take const operands for some reason.
-  DIVariable V(const_cast<MDNode *>(MI->getOperand(NOps-1).getMetadata()));
-  if (V.getContext().isSubprogram())
-    O << DISubprogram(V.getContext()).getDisplayName() << ":";
-  O << V.getName();
-  O << " <- ";
-  // Frame address.  Currently handles register +- offset only.
-  O << '[';
-  if (MI->getOperand(0).isReg() && MI->getOperand(0).getReg())
-    printOperand(MI, 0, O);
-  else
-    O << "undef";
-  O << '+'; printOperand(MI, 3, O);
-  O << ']';
-  O << "+";
-  printOperand(MI, NOps-2, O);
-}
-
-
-
 //===----------------------------------------------------------------------===//
 // Target Registry Stuff
 //===----------------------------------------------------------------------===//