Improve stack object printing. NFC.

[madhur13490]

remove redundant print

[madhur13490]

rebase

[arsenm]

llvm/lib/CodeGen/MachineFrameInfo.cpp

213–217

This is noise

215

This is kind of noise too

236

It would be more consistent to add an is spill after the rest of the info

llvm/include/llvm/CodeGen/MachineFrameInfo.h

public:
   /// but that must be preserved - they are callee saved registers that are not
   /// saved.
   ///
   /// Before the PrologueEpilogueInserter has placed the CSR spill code, this
   /// method always returns an empty set.
   BitVector getPristineRegs(const MachineFunction &MF) const;
 
   /// Used by the MachineFunction printer to print information about
-  /// stack objects. Implemented in MachineFunction.cpp.
+  /// stack objects.
   void print(const MachineFunction &MF, raw_ostream &OS) const;
 
   /// dump - Print the function to stderr.
   void dump(const MachineFunction &MF) const;
 };
 
 } // End llvm namespace
 
 #endif

llvm/lib/CodeGen/MachineFrameInfo.cpp

for (const MachineInstr &MI : MBB) {
         if (ExtraInfo & InlineAsm::Extra_IsAlignStack)
           AdjustsStack = true;
       }
     }
   }
 }
 
 void MachineFrameInfo::print(const MachineFunction &MF, raw_ostream &OS) const{
-  if (Objects.empty()) return;
-
+  OS << "MF name: " << MF.getName() << "\n";
+  if (Objects.empty()) {
+    OS << "No stack objects.\n";
+    return;
+  }
   const TargetFrameLowering *FI = MF.getSubtarget().getFrameLowering();
   int ValOffset = (FI ? FI->getOffsetOfLocalArea() : 0);
 
+  OS << "NumFixedObjects=" << static_cast<unsigned>(NumFixedObjects) << "\n";
+
   OS << "Frame Objects:\n";
 
   for (unsigned i = 0, e = Objects.size(); i != e; ++i) {
     const StackObject &SO = Objects[i];
     OS << "  fi#" << (int)(i-NumFixedObjects) << ": ";
 
     if (SO.StackID != 0)
-      OS << "id=" << static_cast<unsigned>(SO.StackID) << ' ';
+      OS << "stackid=" << static_cast<unsigned>(SO.StackID) << ", ";
 
     if (SO.Size == ~0ULL) {
       OS << "dead\n";
       continue;
     }
+    OS << "isSplitSplot=" << static_cast<bool>(SO.isSpillSlot) << ", ";
     if (SO.Size == 0)
       OS << "variable sized";
     else
       OS << "size=" << SO.Size;
     OS << ", align=" << SO.Alignment.value();
 
     if (i < NumFixedObjects)
-      OS << ", fixed";
+      OS << ", fixed objects:";
     if (i < NumFixedObjects || SO.SPOffset != -1) {
       int64_t Off = SO.SPOffset - ValOffset;
       OS << ", at location [SP";
       if (Off > 0)
         OS << "+" << Off;
       else if (Off < 0)
         OS << Off;
       OS << "]";