zap dead code.

[oota-llvm.git] / lib / Target / PowerPC / AsmPrinter / PPCAsmPrinter.cpp

diff --git a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
index 91954d234337f7315bb4d5f5044aa640749851c5..c05a640017027bf48731d2f474bded24c139faef 100644 (file)
--- a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
@@ -21,6 +21,7 @@
 #include "PPCPredicates.h"
 #include "PPCTargetMachine.h"
 #include "PPCSubtarget.h"
+#include "llvm/Analysis/DebugInfo.h"
 #include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
 #include "llvm/Module.h"
@@ -42,6 +43,7 @@
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetOptions.h"
 #include "llvm/Target/TargetRegistry.h"
+#include "llvm/Support/Debug.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
@@ -65,10 +67,6 @@ namespace {
       return "PowerPC Assembly Printer";
     }
 
-    PPCTargetMachine &getTM() {
-      return static_cast<PPCTargetMachine&>(TM);
-    }
-
     unsigned enumRegToMachineReg(unsigned enumReg) {
       switch (enumReg) {
       default: llvm_unreachable("Unhandled register!");
@@ -199,7 +197,7 @@ namespace {
                           raw_ostream &O) {
       const MachineOperand &MO = MI->getOperand(OpNo);
       if (TM.getRelocationModel() != Reloc::Static) {
-        if (MO.getType() == MachineOperand::MO_GlobalAddress) {
+        if (MO.isGlobal()) {
           const GlobalValue *GV = MO.getGlobal();
           if (GV->isDeclaration() || GV->isWeakForLinker()) {
             // Dynamically-resolved functions need a stub for the function.
@@ -213,7 +211,7 @@ namespace {
             return;
           }
         }
-        if (MO.getType() == MachineOperand::MO_ExternalSymbol) {
+        if (MO.isSymbol()) {
           SmallString<128> TempNameStr;
           TempNameStr += StringRef(MO.getSymbolName());
           TempNameStr += StringRef("$stub");
@@ -311,7 +309,7 @@ namespace {
     void printTOCEntryLabel(const MachineInstr *MI, unsigned OpNo,
                             raw_ostream &O) {
       const MachineOperand &MO = MI->getOperand(OpNo);
-      assert(MO.getType() == MachineOperand::MO_GlobalAddress);
+      assert(MO.isGlobal());
       MCSymbol *Sym = Mang->getSymbol(MO.getGlobal());
 
       // Map symbol -> label of TOC entry.
@@ -326,6 +324,19 @@ namespace {
 
     void printPredicateOperand(const MachineInstr *MI, unsigned OpNo,
                                raw_ostream &O, const char *Modifier);
+
+    MachineLocation getDebugValueLocation(const MachineInstr *MI) const {
+
+      MachineLocation Location;
+      assert (MI->getNumOperands() == 4 && "Invalid no. of machine operands!");
+      // Frame address.  Currently handles register +- offset only.
+      if (MI->getOperand(0).isReg() && MI->getOperand(2).isImm())
+        Location.set(MI->getOperand(0).getReg(), MI->getOperand(2).getImm());
+      else {
+        DEBUG(dbgs() << "DBG_VALUE instruction ignored! " << *MI << "\n");
+      }
+      return Location;
+    }
   };
 
   /// PPCLinuxAsmPrinter - PowerPC assembly printer, customized for Linux
@@ -535,6 +546,23 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
   SmallString<128> Str;
   raw_svector_ostream O(Str);
 
+  if (MI->getOpcode() == TargetOpcode::DBG_VALUE) {
+    unsigned NOps = MI->getNumOperands();
+    assert(NOps==4);
+    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()));
+    O << V.getName();
+    O << " <- ";
+    // Frame address.  Currently handles register +- offset only.
+    assert(MI->getOperand(0).isReg() && MI->getOperand(1).isImm());
+    O << '['; printOperand(MI, 0, O); O << '+'; printOperand(MI, 1, O);
+    O << ']';
+    O << "+";
+    printOperand(MI, NOps-2, O);
+    OutStreamer.EmitRawText(O.str());
+    return;
+  }
   // Check for slwi/srwi mnemonics.
   if (MI->getOpcode() == PPC::RLWINM) {
     unsigned char SH = MI->getOperand(2).getImm();
@@ -649,8 +677,8 @@ void PPCDarwinAsmPrinter::EmitStartOfAsmFile(Module &M) {
 
   // Prime text sections so they are adjacent.  This reduces the likelihood a
   // large data or debug section causes a branch to exceed 16M limit.
-  TargetLoweringObjectFileMachO &TLOFMacho = 
-    static_cast<TargetLoweringObjectFileMachO &>(getObjFileLowering());
+  const TargetLoweringObjectFileMachO &TLOFMacho = 
+    static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
   OutStreamer.SwitchSection(TLOFMacho.getTextCoalSection());
   if (TM.getRelocationModel() == Reloc::PIC_) {
     OutStreamer.SwitchSection(
@@ -686,8 +714,8 @@ void PPCDarwinAsmPrinter::
 EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
   bool isPPC64 = TM.getTargetData()->getPointerSizeInBits() == 64;
   
-  TargetLoweringObjectFileMachO &TLOFMacho = 
-    static_cast<TargetLoweringObjectFileMachO &>(getObjFileLowering());
+  const TargetLoweringObjectFileMachO &TLOFMacho = 
+    static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
 
   // .lazy_symbol_pointer
   const MCSection *LSPSection = TLOFMacho.getLazySymbolPointerSection();
@@ -782,8 +810,8 @@ bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
   bool isPPC64 = TM.getTargetData()->getPointerSizeInBits() == 64;
 
   // Darwin/PPC always uses mach-o.
-  TargetLoweringObjectFileMachO &TLOFMacho = 
-    static_cast<TargetLoweringObjectFileMachO &>(getObjFileLowering());
+  const TargetLoweringObjectFileMachO &TLOFMacho = 
+    static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
   MachineModuleInfoMachO &MMIMacho =
     MMI->getObjFileInfo<MachineModuleInfoMachO>();