[MIR] Teach the mir printer how to print the register bank.

For now, we put the register bank in the Class field since a register
may only have one of those at a given time. The downside of that
representation is that if a register class and a register bank have the
same name, we will not be able to distinguish them.

llvm-svn: 265796

1 files changed, 8 insertions, 5 deletions

diff --git a/llvm/lib/CodeGen/MIRPrinter.cpp b/llvm/lib/CodeGen/MIRPrinter.cpp
index 10013a94ddb..1bbb73eed02 100644
--- a/llvm/lib/CodeGen/MIRPrinter.cpp
+++ b/llvm/lib/CodeGen/MIRPrinter.cpp
@@ -14,23 +14,24 @@
 
 #include "MIRPrinter.h"
 #include "llvm/ADT/STLExtras.h"
+#include "llvm/CodeGen/GlobalISel/RegisterBank.h"
+#include "llvm/CodeGen/MIRYamlMapping.h"
 #include "llvm/CodeGen/MachineConstantPool.h"
-#include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineMemOperand.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/MIRYamlMapping.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Constants.h"
-#include "llvm/IR/Instructions.h"
 #include "llvm/IR/IRPrintingPasses.h"
+#include "llvm/IR/Instructions.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/ModuleSlotTracker.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/YAMLTraits.h"
+#include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetSubtargetInfo.h"
 
@@ -210,9 +211,11 @@ void MIRPrinter::convert(yaml::MachineFunction &MF,
     unsigned Reg = TargetRegisterInfo::index2VirtReg(I);
     yaml::VirtualRegisterDefinition VReg;
     VReg.ID = I;
-    if (RegInfo.getRegClass(Reg))
+    if (RegInfo.getRegClassOrNull(Reg))
       VReg.Class =
           StringRef(TRI->getRegClassName(RegInfo.getRegClass(Reg))).lower();
+    else if (RegInfo.getRegBankOrNull(Reg))
+      VReg.Class = StringRef(RegInfo.getRegBankOrNull(Reg)->getName()).lower();
     else {
       VReg.Class = std::string("_");
       assert(RegInfo.getSize(Reg) && "Generic registers must have a size");