Introduce virtual ParseRegister method in TargetAsmParser.

Create override of this method in X86/ARM/MBlaze.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124378 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 21 insertions, 6 deletions

diff --git a/include/llvm/Target/TargetAsmParser.h b/include/llvm/Target/TargetAsmParser.h
index 6b38b8c7e1..9ff50cb275 100644
--- a/include/llvm/Target/TargetAsmParser.h
+++ b/include/llvm/Target/TargetAsmParser.h
@@ -42,6 +42,8 @@ public:
   unsigned getAvailableFeatures() const { return AvailableFeatures; }
   void setAvailableFeatures(unsigned Value) { AvailableFeatures = Value; }
 
+  virtual bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) = 0;
+
   /// ParseInstruction - Parse one assembly instruction.
   ///
   /// The parser is positioned following the instruction name. The target
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index b388dced01..018e17d032 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -53,6 +53,7 @@ class ARMAsmParser : public TargetAsmParser {
   bool Error(SMLoc L, const Twine &Msg) { return Parser.Error(L, Msg); }
 
   int TryParseRegister();
+  virtual bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc);
   bool TryParseCoprocessorOperandName(SmallVectorImpl<MCParsedAsmOperand*>&);
   bool TryParseRegisterWithWriteBack(SmallVectorImpl<MCParsedAsmOperand*> &);
   bool ParseRegisterList(SmallVectorImpl<MCParsedAsmOperand*> &);
@@ -549,6 +550,12 @@ static unsigned MatchRegisterName(StringRef Name);
 
 /// }
 
+bool ARMAsmParser::ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) {
+  RegNo = TryParseRegister();
+
+  return (RegNo == (unsigned)-1);
+}
+
 /// Try to parse a register name.  The token must be an Identifier when called,
 /// and if it is a register name the token is eaten and the register number is
 /// returned.  Otherwise return -1.
diff --git a/lib/Target/MBlaze/AsmParser/MBlazeAsmParser.cpp b/lib/Target/MBlaze/AsmParser/MBlazeAsmParser.cpp
index 7012ab0284..c9e89536bd 100644
--- a/lib/Target/MBlaze/AsmParser/MBlazeAsmParser.cpp
+++ b/lib/Target/MBlaze/AsmParser/MBlazeAsmParser.cpp
@@ -41,11 +41,13 @@ class MBlazeAsmParser : public TargetAsmParser {
   bool Error(SMLoc L, const Twine &Msg) { return Parser.Error(L, Msg); }
 
   MBlazeOperand *ParseMemory(SmallVectorImpl<MCParsedAsmOperand*> &Operands);
-  MBlazeOperand *ParseRegister();
+  MBlazeOperand *ParseRegister(unsigned &RegNo);
   MBlazeOperand *ParseImmediate();
   MBlazeOperand *ParseFsl();
   MBlazeOperand* ParseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands);
 
+  virtual bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc);
+
   bool ParseDirectiveWord(unsigned Size, SMLoc L);
 
   bool MatchAndEmitInstruction(SMLoc IDLoc,
@@ -384,14 +386,18 @@ ParseMemory(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
   return Op;
 }
 
-MBlazeOperand *MBlazeAsmParser::ParseRegister() {
+bool MBlazeAsmParser::ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) {
+  return (ParseRegister(RegNo) == 0);
+}
+
+MBlazeOperand *MBlazeAsmParser::ParseRegister(unsigned &RegNo) {
   SMLoc S = Parser.getTok().getLoc();
   SMLoc E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
 
   switch (getLexer().getKind()) {
   default: return 0;
   case AsmToken::Identifier:
-    unsigned RegNo = MatchRegisterName(getLexer().getTok().getIdentifier());
+    RegNo = MatchRegisterName(getLexer().getTok().getIdentifier());
     if (RegNo == 0)
       return 0;
 
@@ -452,7 +458,8 @@ ParseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
   MBlazeOperand *Op;
 
   // Attempt to parse the next token as a register name
-  Op = ParseRegister();
+  unsigned RegNo;
+  Op = ParseRegister(RegNo);
 
   // Attempt to parse the next token as an FSL immediate
   if (!Op)
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index b3f3dbbedd..b5d42ffc8c 100644
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -44,8 +44,6 @@ private:
 
   bool Error(SMLoc L, const Twine &Msg) { return Parser.Error(L, Msg); }
 
-  bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc);
-
   X86Operand *ParseOperand();
   X86Operand *ParseMemOperand(unsigned SegReg, SMLoc StartLoc);
 
@@ -71,6 +69,7 @@ public:
     setAvailableFeatures(ComputeAvailableFeatures(
                            &TM.getSubtarget<X86Subtarget>()));
   }
+  virtual bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc);
 
   virtual bool ParseInstruction(StringRef Name, SMLoc NameLoc,
                                 SmallVectorImpl<MCParsedAsmOperand*> &Operands);