Propagate debug loc info through prologue/epilogue.

[oota-llvm.git] / lib / CodeGen / RegAllocBigBlock.cpp

diff --git a/lib/CodeGen/RegAllocBigBlock.cpp b/lib/CodeGen/RegAllocBigBlock.cpp
index efd86bf8194cb29d280bfd89dd61a7f7577df70e..91e4099d0c45761fea7ca9849b6d062d2984104b 100644 (file)
--- a/lib/CodeGen/RegAllocBigBlock.cpp
+++ b/lib/CodeGen/RegAllocBigBlock.cpp
@@ -52,11 +52,11 @@ STATISTIC(NumStores, "Number of stores added");
 STATISTIC(NumLoads , "Number of loads added");
 STATISTIC(NumFolded, "Number of loads/stores folded into instructions");
 
-namespace {
-  static RegisterRegAlloc
-    bigBlockRegAlloc("bigblock", "  Big-block register allocator",
-                  createBigBlockRegisterAllocator);
+static RegisterRegAlloc
+  bigBlockRegAlloc("bigblock", "Big-block register allocator",
+                createBigBlockRegisterAllocator);
 
+namespace {
 /// VRegKeyInfo - Defines magic values required to use VirtRegs as DenseMap
 /// keys.
   struct VRegKeyInfo {
@@ -82,7 +82,7 @@ namespace {
   class VISIBILITY_HIDDEN RABigBlock : public MachineFunctionPass {
   public:
     static char ID;
-    RABigBlock() : MachineFunctionPass((intptr_t)&ID) {}
+    RABigBlock() : MachineFunctionPass(&ID) {}
   private:
     /// TM - For getting at TargetMachine info 
     ///
@@ -311,7 +311,7 @@ void RABigBlock::spillVirtReg(MachineBasicBlock &MBB,
   assert(VirtReg && "Spilling a physical register is illegal!"
          " Must not have appropriate kill for the register or use exists beyond"
          " the intended one.");
-  DOUT << "  Spilling register " << RegInfo->getPrintableName(PhysReg)
+  DOUT << "  Spilling register " << RegInfo->getName(PhysReg)
        << " containing %reg" << VirtReg;
   
   const TargetInstrInfo* TII = MBB.getParent()->getTarget().getInstrInfo();
@@ -518,7 +518,7 @@ MachineInstr *RABigBlock::reloadVirtReg(MachineBasicBlock &MBB, MachineInstr *MI
     assignVirtToPhysReg(VirtReg, PhysReg);
   } else {  // no free registers available.
     // try to fold the spill into the instruction
-    SmallVector<unsigned, 2> Ops;
+    SmallVector<unsigned, 1> Ops;
     Ops.push_back(OpNum);
     if(MachineInstr* FMI = TII->foldMemoryOperand(*MF, MI, Ops, FrameIndex)) {
       ++NumFolded;
@@ -535,7 +535,7 @@ MachineInstr *RABigBlock::reloadVirtReg(MachineBasicBlock &MBB, MachineInstr *MI
   markVirtRegModified(VirtReg, false);
 
   DOUT << "  Reloading %reg" << VirtReg << " into "
-       << RegInfo->getPrintableName(PhysReg) << "\n";
+       << RegInfo->getName(PhysReg) << "\n";
 
   // Add move instruction(s)
   TII->loadRegFromStackSlot(MBB, MI, PhysReg, FrameIndex, RC);
@@ -560,7 +560,7 @@ void RABigBlock::FillVRegReadTable(MachineBasicBlock &MBB) {
     for (unsigned i = 0; i != MI->getNumOperands(); ++i) {
       MachineOperand& MO = MI->getOperand(i);
       // look for vreg reads..
-      if (MO.isRegister() && !MO.isDef() && MO.getReg() &&
+      if (MO.isReg() && !MO.isDef() && MO.getReg() &&
           TargetRegisterInfo::isVirtualRegister(MO.getReg())) {
           // ..and add them to the read table.
           VRegTimes* &Times = VRegReadTable[MO.getReg()];
@@ -589,7 +589,7 @@ void RABigBlock::FillVRegReadTable(MachineBasicBlock &MBB) {
 static bool isReadModWriteImplicitKill(MachineInstr *MI, unsigned Reg) {
   for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
     MachineOperand& MO = MI->getOperand(i);
-    if (MO.isRegister() && MO.getReg() == Reg && MO.isImplicit() &&
+    if (MO.isReg() && MO.getReg() == Reg && MO.isImplicit() &&
         MO.isDef() && !MO.isDead())
       return true;
   }
@@ -601,7 +601,7 @@ static bool isReadModWriteImplicitKill(MachineInstr *MI, unsigned Reg) {
 static bool isReadModWriteImplicitDef(MachineInstr *MI, unsigned Reg) {
   for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
     MachineOperand& MO = MI->getOperand(i);
-    if (MO.isRegister() && MO.getReg() == Reg && MO.isImplicit() &&
+    if (MO.isReg() && MO.getReg() == Reg && MO.isImplicit() &&
         !MO.isDef() && MO.isKill())
       return true;
   }
@@ -646,14 +646,14 @@ void RABigBlock::AllocateBasicBlock(MachineBasicBlock &MBB) {
           DOUT << "  Regs have values: ";
           for (unsigned i = 0; i != RegInfo->getNumRegs(); ++i)
             if (PhysRegsUsed[i] != -1 && PhysRegsUsed[i] != -2)
-               DOUT << "[" << RegInfo->getPrintableName(i)
+               DOUT << "[" << RegInfo->getName(i)
                     << ",%reg" << PhysRegsUsed[i] << "] ";
           DOUT << "\n");
 
     SmallVector<unsigned, 8> Kills;
     for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
       MachineOperand& MO = MI->getOperand(i);
-      if (MO.isRegister() && MO.isKill()) {
+      if (MO.isReg() && MO.isKill()) {
         if (!MO.isImplicit())
           Kills.push_back(MO.getReg());
         else if (!isReadModWriteImplicitKill(MI, MO.getReg()))
@@ -673,7 +673,7 @@ void RABigBlock::AllocateBasicBlock(MachineBasicBlock &MBB) {
     for (unsigned i = 0; i != MI->getNumOperands(); ++i) {
       MachineOperand& MO = MI->getOperand(i);
       // here we are looking for only used operands (never def&use)
-      if (MO.isRegister() && !MO.isDef() && MO.getReg() && !MO.isImplicit() &&
+      if (MO.isReg() && !MO.isDef() && MO.getReg() && !MO.isImplicit() &&
           TargetRegisterInfo::isVirtualRegister(MO.getReg()))
         MI = reloadVirtReg(MBB, MI, i);
     }
@@ -700,14 +700,14 @@ void RABigBlock::AllocateBasicBlock(MachineBasicBlock &MBB) {
       }
 
       if (PhysReg) {
-        DOUT << "  Last use of " << RegInfo->getPrintableName(PhysReg)
+        DOUT << "  Last use of " << RegInfo->getName(PhysReg)
              << "[%reg" << VirtReg <<"], removing it from live set\n";
         removePhysReg(PhysReg);
         for (const unsigned *AliasSet = RegInfo->getSubRegisters(PhysReg);
              *AliasSet; ++AliasSet) {
           if (PhysRegsUsed[*AliasSet] != -2) {
             DOUT  << "  Last use of "
-                  << RegInfo->getPrintableName(*AliasSet)
+                  << RegInfo->getName(*AliasSet)
                   << "[%reg" << VirtReg <<"], removing it from live set\n";
             removePhysReg(*AliasSet);
           }
@@ -719,7 +719,7 @@ void RABigBlock::AllocateBasicBlock(MachineBasicBlock &MBB) {
     // are defined, and marking explicit destinations in the PhysRegsUsed map.
     for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
       MachineOperand& MO = MI->getOperand(i);
-      if (MO.isRegister() && MO.isDef() && !MO.isImplicit() && MO.getReg() &&
+      if (MO.isReg() && MO.isDef() && !MO.isImplicit() && MO.getReg() &&
           TargetRegisterInfo::isPhysicalRegister(MO.getReg())) {
         unsigned Reg = MO.getReg();
         if (PhysRegsUsed[Reg] == -2) continue;  // Something like ESP.
@@ -764,7 +764,7 @@ void RABigBlock::AllocateBasicBlock(MachineBasicBlock &MBB) {
     SmallVector<unsigned, 8> DeadDefs;
     for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
       MachineOperand& MO = MI->getOperand(i);
-      if (MO.isRegister() && MO.isDead())
+      if (MO.isReg() && MO.isDead())
         DeadDefs.push_back(MO.getReg());
     }
 
@@ -775,7 +775,7 @@ void RABigBlock::AllocateBasicBlock(MachineBasicBlock &MBB) {
     //
     for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
       MachineOperand& MO = MI->getOperand(i);
-      if (MO.isRegister() && MO.isDef() && MO.getReg() &&
+      if (MO.isReg() && MO.isDef() && MO.getReg() &&
           TargetRegisterInfo::isVirtualRegister(MO.getReg())) {
         unsigned DestVirtReg = MO.getReg();
         unsigned DestPhysReg;
@@ -806,16 +806,16 @@ void RABigBlock::AllocateBasicBlock(MachineBasicBlock &MBB) {
       }
 
       if (PhysReg) {
-        DOUT  << "  Register " << RegInfo->getPrintableName(PhysReg)
+        DOUT  << "  Register " << RegInfo->getName(PhysReg)
               << " [%reg" << VirtReg
-              << "] is never used, removing it frame live list\n";
+              << "] is never used, removing it from live set\n";
         removePhysReg(PhysReg);
         for (const unsigned *AliasSet = RegInfo->getAliasSet(PhysReg);
              *AliasSet; ++AliasSet) {
           if (PhysRegsUsed[*AliasSet] != -2) {
-            DOUT  << "  Register " << RegInfo->getPrintableName(*AliasSet)
+            DOUT  << "  Register " << RegInfo->getName(*AliasSet)
                   << " [%reg" << *AliasSet
-                  << "] is never used, removing it frame live list\n";
+                  << "] is never used, removing it from live set\n";
             removePhysReg(*AliasSet);
           }
         }
@@ -823,8 +823,9 @@ void RABigBlock::AllocateBasicBlock(MachineBasicBlock &MBB) {
     }
     
     // Finally, if this is a noop copy instruction, zap it.
-    unsigned SrcReg, DstReg;
-    if (TII.isMoveInstr(*MI, SrcReg, DstReg) && SrcReg == DstReg)
+    unsigned SrcReg, DstReg, SrcSubReg, DstSubReg;
+    if (TII.isMoveInstr(*MI, SrcReg, DstReg, SrcSubReg, DstSubReg) &&
+        SrcReg == DstReg)
       MBB.erase(MI);
   }