Make AsmPrinter::emitImplicitDef a virtual method so targets can emit custom comments for implicit defs

For NVPTX, this fixes a crash where the emitImplicitDef implementation was expecting physical registers,
while NVPTX uses virtual registers (with a couple of exceptions).  Now, the implicit def comment will be
emitted as a true PTX register name. Other targets can use this to customize the output of implicit def
comments.

Fixes PR17519

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192444 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/Target/NVPTX/NVPTXAsmPrinter.h b/lib/Target/NVPTX/NVPTXAsmPrinter.h
index 06ea102827..df49d54da0 100644
--- a/lib/Target/NVPTX/NVPTXAsmPrinter.h
+++ b/lib/Target/NVPTX/NVPTXAsmPrinter.h
@@ -188,6 +188,7 @@ private:
   void EmitFunctionEntryLabel();
   void EmitFunctionBodyStart();
   void EmitFunctionBodyEnd();
+  void emitImplicitDef(const MachineInstr *MI) const;
 
   void EmitInstruction(const MachineInstr *);
   void lowerToMCInst(const MachineInstr *MI, MCInst &OutMI);
@@ -213,7 +214,7 @@ private:
   void emitGlobals(const Module &M);
   void emitHeader(Module &M, raw_ostream &O);
   void emitKernelFunctionDirectives(const Function &F, raw_ostream &O) const;
-  void emitVirtualRegister(unsigned int vr, bool isVec, raw_ostream &O);
+  void emitVirtualRegister(unsigned int vr, raw_ostream &);
   void emitFunctionExternParamList(const MachineFunction &MF);
   void emitFunctionParamList(const Function *, raw_ostream &O);
   void emitFunctionParamList(const MachineFunction &MF, raw_ostream &O);
@@ -294,7 +295,7 @@ public:
 
   bool ignoreLoc(const MachineInstr &);
 
-  virtual void getVirtualRegisterName(unsigned, bool, raw_ostream &);
+  std::string getVirtualRegisterName(unsigned) const;
 
   DebugLoc prevDebugLoc;
   void emitLineNumberAsDotLoc(const MachineInstr &);