Simplify LiveInterval::print().

Don't print out the register number and spill weight, making the TRI
argument unnecessary.

This allows callers to interpret the reg field. It can currently be a
virtual register, a physical register, a spill slot, or a register unit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158031 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/LiveInterval.h

@@ -486,7 +486,7 @@ namespace llvm {
               (thisIndex == otherIndex && reg < other.reg));
     }
 
-    void print(raw_ostream &OS, const TargetRegisterInfo *TRI = 0) const;
+    void print(raw_ostream &OS) const;
     void dump() const;
 
   private:

lib/CodeGen/LiveInterval.cpp

@@ -592,15 +592,10 @@ void LiveRange::dump() const {
   dbgs() << *this << "\n";
 }
 
-void LiveInterval::print(raw_ostream &OS, const TargetRegisterInfo *TRI) const {
-  OS << PrintReg(reg, TRI);
-  if (weight != 0)
-    OS << ',' << weight;
-
+void LiveInterval::print(raw_ostream &OS) const {
   if (empty())
-    OS << " EMPTY";
+    OS << "EMPTY";
   else {
-    OS << " = ";
     for (LiveInterval::Ranges::const_iterator I = ranges.begin(),
            E = ranges.end(); I != E; ++I) {
       OS << *I;

lib/CodeGen/LiveIntervalAnalysis.cpp

@@ -138,10 +138,8 @@ void LiveIntervals::print(raw_ostream &OS, const Module* ) const {
 
   // Dump the physregs.
   for (unsigned Reg = 1, RegE = TRI->getNumRegs(); Reg != RegE; ++Reg)
-    if (const LiveInterval *LI = R2IMap.lookup(Reg)) {
-      LI->print(OS, TRI);
-      OS << '\n';
-    }
+    if (const LiveInterval *LI = R2IMap.lookup(Reg))
+      OS << PrintReg(Reg, TRI) << '\t' << *LI << '\n';
 
   // Dump the regunits.
   for (unsigned i = 0, e = RegUnitIntervals.size(); i != e; ++i)
@@ -151,10 +149,8 @@ void LiveIntervals::print(raw_ostream &OS, const Module* ) const {
   // Dump the virtregs.
   for (unsigned Reg = 0, RegE = MRI->getNumVirtRegs(); Reg != RegE; ++Reg)
     if (const LiveInterval *LI =
-        R2IMap.lookup(TargetRegisterInfo::index2VirtReg(Reg))) {
-      LI->print(OS, TRI);
-      OS << '\n';
-    }
+        R2IMap.lookup(TargetRegisterInfo::index2VirtReg(Reg)))
+      OS << PrintReg(LI->reg) << '\t' << *LI << '\n';
 
   printInstrs(OS);
 }
@@ -352,10 +348,7 @@ void LiveIntervals::handleVirtualRegisterDef(MachineBasicBlock *mbb,
         interval.addRange(LiveRange(RedefIndex, RedefIndex.getDeadSlot(),
                                     OldValNo));
 
-      DEBUG({
-          dbgs() << " RESULT: ";
-          interval.print(dbgs(), TRI);
-        });
+      DEBUG(dbgs() << " RESULT: " << interval);
     } else if (LV->isPHIJoin(interval.reg)) {
       // In the case of PHI elimination, each variable definition is only
       // live until the end of the block.  We've already taken care of the

lib/CodeGen/RegAllocBase.cpp

@@ -189,7 +189,7 @@ void RegAllocBase::allocatePhysRegs() {
     // result from splitting.
     DEBUG(dbgs() << "\nselectOrSplit "
                  << MRI->getRegClass(VirtReg->reg)->getName()
-                 << ':' << *VirtReg << '\n');
+                 << ':' << PrintReg(VirtReg->reg) << ' ' << *VirtReg << '\n');
     typedef SmallVector<LiveInterval*, 4> VirtRegVec;
     VirtRegVec SplitVRegs;
     unsigned AvailablePhysReg = selectOrSplit(*VirtReg, SplitVRegs);

lib/CodeGen/RegisterCoalescer.cpp

@@ -451,10 +451,7 @@ bool RegisterCoalescer::adjustCopiesBackFrom(const CoalescerPair &CP,
   // IntB, we can merge them.
   if (ValLR+1 != BLR) return false;
 
-  DEBUG({
-      dbgs() << "Extending: ";
-      IntB.print(dbgs(), TRI);
-    });
+  DEBUG(dbgs() << "Extending: " << PrintReg(IntB.reg, TRI));
 
   SlotIndex FillerStart = ValLR->end, FillerEnd = BLR->start;
   // We are about to delete CopyMI, so need to remove it as the 'instruction
@@ -489,11 +486,7 @@ bool RegisterCoalescer::adjustCopiesBackFrom(const CoalescerPair &CP,
     if (HasPHIKill)
       ValLR->valno->setHasPHIKill(true);
   }
-  DEBUG({
-      dbgs() << "   result = ";
-      IntB.print(dbgs(), TRI);
-      dbgs() << "\n";
-    });
+  DEBUG(dbgs() << "   result = " << IntB << '\n');
 
   // If the source instruction was killing the source register before the
   // merge, unset the isKill marker given the live range has been extended.
@@ -1084,12 +1077,8 @@ bool RegisterCoalescer::joinCopy(MachineInstr *CopyMI, bool &Again) {
   // Update regalloc hint.
   TRI->UpdateRegAllocHint(CP.getSrcReg(), CP.getDstReg(), *MF);
 
-  DEBUG({
-    LiveInterval &DstInt = LIS->getInterval(CP.getDstReg());
-    dbgs() << "\tJoined. Result = ";
-    DstInt.print(dbgs(), TRI);
-    dbgs() << "\n";
-  });
+  DEBUG(dbgs() << "\tJoined. Result = " << PrintReg(CP.getDstReg(), TRI)
+               << ' ' << LIS->getInterval(CP.getDstReg()) << '\n');
 
   ++numJoins;
   return true;
@@ -1100,7 +1089,8 @@ bool RegisterCoalescer::joinReservedPhysReg(CoalescerPair &CP) {
   assert(CP.isPhys() && "Must be a physreg copy");
   assert(RegClassInfo.isReserved(CP.getDstReg()) && "Not a reserved register");
   LiveInterval &RHS = LIS->getInterval(CP.getSrcReg());
-  DEBUG({ dbgs() << "\t\tRHS = "; RHS.print(dbgs(), TRI); dbgs() << "\n"; });
+  DEBUG(dbgs() << "\t\tRHS = " << PrintReg(CP.getSrcReg()) << ' ' << RHS
+               << '\n');
 
   assert(CP.isFlipped() && RHS.containsOneValue() &&
          "Invalid join with reserved register");
@@ -1263,7 +1253,8 @@ bool RegisterCoalescer::joinIntervals(CoalescerPair &CP) {
     return joinReservedPhysReg(CP);
 
   LiveInterval &RHS = LIS->getInterval(CP.getSrcReg());
-  DEBUG({ dbgs() << "\t\tRHS = "; RHS.print(dbgs(), TRI); dbgs() << "\n"; });
+  DEBUG(dbgs() << "\t\tRHS = " << PrintReg(CP.getSrcReg()) << ' ' << RHS
+               << '\n');
 
   // Compute the final value assignment, assuming that the live ranges can be
   // coalesced.
@@ -1277,7 +1268,8 @@ bool RegisterCoalescer::joinIntervals(CoalescerPair &CP) {
   SmallVector<MachineInstr*, 8> DeadCopies;
 
   LiveInterval &LHS = LIS->getOrCreateInterval(CP.getDstReg());
-  DEBUG({ dbgs() << "\t\tLHS = "; LHS.print(dbgs(), TRI); dbgs() << "\n"; });
+  DEBUG(dbgs() << "\t\tLHS = " << PrintReg(CP.getDstReg(), TRI) << ' ' << LHS
+               << '\n');
 
   // Loop over the value numbers of the LHS, seeing if any are defined from
   // the RHS.
@@ -1619,17 +1611,8 @@ bool RegisterCoalescer::runOnMachineFunction(MachineFunction &fn) {
   RegClassInfo.runOnMachineFunction(fn);
 
   // Join (coalesce) intervals if requested.
-  if (EnableJoining) {
+  if (EnableJoining)
     joinAllIntervals();
-    DEBUG({
-        dbgs() << "********** INTERVALS POST JOINING **********\n";
-        for (LiveIntervals::iterator I = LIS->begin(), E = LIS->end();
-             I != E; ++I){
-          I->second->print(dbgs(), TRI);
-          dbgs() << "\n";
-        }
-      });
-  }
 
   // After deleting a lot of copies, register classes may be less constrained.
   // Removing sub-register operands may allow GR32_ABCD -> GR32 and DPR_VFP2 ->