Add TargetRegisterInfo::printReg() to pretty-print registers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121780 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/Target/TargetRegisterInfo.cpp b/lib/Target/TargetRegisterInfo.cpp
index 3beddf5fc7..078320d42f 100644
--- a/lib/Target/TargetRegisterInfo.cpp
+++ b/lib/Target/TargetRegisterInfo.cpp
@@ -17,6 +17,7 @@
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/ADT/BitVector.h"
+#include "llvm/Support/raw_ostream.h"
 
 using namespace llvm;
 
@@ -39,6 +40,13 @@ TargetRegisterInfo::TargetRegisterInfo(const TargetRegisterDesc *D, unsigned NR,
 
 TargetRegisterInfo::~TargetRegisterInfo() {}
 
+void TargetRegisterInfo::printReg(unsigned Reg, raw_ostream &OS) const {
+  if (Reg && isVirtualRegister(Reg))
+    OS << "%reg" << Reg;
+  else
+    OS << '%' << getName(Reg);
+}
+
 /// getMinimalPhysRegClass - Returns the Register Class of a physical
 /// register of the given type, picking the most sub register class of
 /// the right type that contains this physreg.