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[oota-llvm.git] / lib / Target / Mips / MipsAsmPrinter.cpp

diff --git a/lib/Target/Mips/MipsAsmPrinter.cpp b/lib/Target/Mips/MipsAsmPrinter.cpp
index 4dac59105de35e029410675f64e3943f2a4f6703..6bce5d2be0f046b868a7fd84bbf4e6e05fcbafcc 100644 (file)
--- a/lib/Target/Mips/MipsAsmPrinter.cpp
+++ b/lib/Target/Mips/MipsAsmPrinter.cpp
@@ -14,10 +14,11 @@
 
 #define DEBUG_TYPE "mips-asm-printer"
 #include "MipsAsmPrinter.h"
-#include "Mips.h"
-#include "MipsInstrInfo.h"
 #include "InstPrinter/MipsInstPrinter.h"
 #include "MCTargetDesc/MipsBaseInfo.h"
+#include "Mips.h"
+#include "MipsInstrInfo.h"
+#include "MipsMCInstLower.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/Twine.h"
@@ -27,16 +28,16 @@
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/CodeGen/MachineInstr.h"
 #include "llvm/CodeGen/MachineMemOperand.h"
+#include "llvm/DataLayout.h"
 #include "llvm/InlineAsm.h"
 #include "llvm/Instructions.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCInst.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
-#include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/Mangler.h"
-#include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetLoweringObjectFile.h"
 #include "llvm/Target/TargetOptions.h"
 
@@ -48,6 +49,13 @@ bool MipsAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
   return true;
 }
 
+bool MipsAsmPrinter::lowerOperand(const MachineOperand &MO, MCOperand &MCOp) {
+  MCOp = MCInstLowering.LowerOperand(MO);
+  return MCOp.isValid();
+}
+
+#include "MipsGenMCPseudoLowering.inc"
+
 void MipsAsmPrinter::EmitInstruction(const MachineInstr *MI) {
   if (MI->isDebugValue()) {
     SmallString<128> Str;
@@ -57,14 +65,19 @@ void MipsAsmPrinter::EmitInstruction(const MachineInstr *MI) {
     return;
   }
 
+  // Do any auto-generated pseudo lowerings.
+  if (emitPseudoExpansionLowering(OutStreamer, MI))
+    return;
+
   MachineBasicBlock::const_instr_iterator I = MI;
   MachineBasicBlock::const_instr_iterator E = MI->getParent()->instr_end();
 
   do {
     MCInst TmpInst0;
     MCInstLowering.Lower(I++, TmpInst0);
+
     OutStreamer.EmitInstruction(TmpInst0);
-  } while ((I != E) && I->isInsideBundle());
+  } while ((I != E) && I->isInsideBundle()); // Delay slot check
 }
 
 //===----------------------------------------------------------------------===//
@@ -194,7 +207,7 @@ const char *MipsAsmPrinter::getCurrentABIString() const {
   case MipsSubtarget::N32:  return "abiN32";
   case MipsSubtarget::N64:  return "abi64";
   case MipsSubtarget::EABI: return "eabi32"; // TODO: handle eabi64
-  default: llvm_unreachable("Unknown Mips ABI");;
+  default: llvm_unreachable("Unknown Mips ABI");
   }
 }
 
@@ -226,8 +239,7 @@ void MipsAsmPrinter::EmitFunctionBodyStart() {
 
     OutStreamer.EmitRawText(StringRef("\t.set\tnoreorder"));
     OutStreamer.EmitRawText(StringRef("\t.set\tnomacro"));
-    if (MipsFI->getEmitNOAT())
-      OutStreamer.EmitRawText(StringRef("\t.set\tnoat"));
+    OutStreamer.EmitRawText(StringRef("\t.set\tnoat"));
   }
 }
 
@@ -238,9 +250,7 @@ void MipsAsmPrinter::EmitFunctionBodyEnd() {
   // always be at the function end, and we can't emit and
   // break with BB logic.
   if (OutStreamer.hasRawTextSupport()) {
-    if (MipsFI->getEmitNOAT())
-      OutStreamer.EmitRawText(StringRef("\t.set\tat"));
-
+    OutStreamer.EmitRawText(StringRef("\t.set\tat"));
     OutStreamer.EmitRawText(StringRef("\t.set\tmacro"));
     OutStreamer.EmitRawText(StringRef("\t.set\treorder"));
     OutStreamer.EmitRawText("\t.end\t" + Twine(CurrentFnSym->getName()));
@@ -335,6 +345,7 @@ bool MipsAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
     }
     case 'D': // Second part of a double word register operand
     case 'L': // Low order register of a double word register operand
+    case 'M': // High order register of a double word register operand
     {
       if (OpNum == 0)
         return true;
@@ -357,12 +368,16 @@ bool MipsAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum,
       unsigned RegOp = OpNum;
       if (!Subtarget->isGP64bit()){
         // Endianess reverses which register holds the high or low value
+        // between M and L.
         switch(ExtraCode[0]) {
-        case 'D':
-          RegOp = (Subtarget->isLittle()) ? OpNum : OpNum+1;
+        case 'M':
+          RegOp = (Subtarget->isLittle()) ? OpNum + 1 : OpNum;
           break;
         case 'L':
-          RegOp = (Subtarget->isLittle()) ? OpNum+1 : OpNum;
+          RegOp = (Subtarget->isLittle()) ? OpNum : OpNum + 1;
+          break;
+        case 'D': // Always the second part
+          RegOp = OpNum + 1;
         }
         if (RegOp >= MI->getNumOperands())
           return true;