Sink getDwarfRegNum, getLLVMRegNum, getSEHRegNum from TargetRegisterInfo down

to MCRegisterInfo. Also initialize the mapping at construction time.

This patch eliminate TargetRegisterInfo from TargetAsmInfo. It's another step
towards fixing the layering violation.

llvm-svn: 135424

1 files changed, 13 insertions, 19 deletions

diff --git a/llvm/lib/Target/X86/X86CodeEmitter.cpp b/llvm/lib/Target/X86/X86CodeEmitter.cpp
index 4b11db7c033..b9b1128eb41 100644
--- a/llvm/lib/Target/X86/X86CodeEmitter.cpp
+++ b/llvm/lib/Target/X86/X86CodeEmitter.cpp
@@ -98,8 +98,6 @@ namespace {
     void emitMemModRMByte(const MachineInstr &MI,
                           unsigned Op, unsigned RegOpcodeField,
                           intptr_t PCAdj = 0);
-
-    unsigned getX86RegNum(unsigned RegNo) const;
   };
 
 template<class CodeEmitter>
@@ -346,11 +344,6 @@ void Emitter<CodeEmitter>::emitJumpTableAddress(unsigned JTI, unsigned Reloc,
     MCE.emitWordLE(0);
 }
 
-template<class CodeEmitter>
-unsigned Emitter<CodeEmitter>::getX86RegNum(unsigned RegNo) const {
-  return X86RegisterInfo::getX86RegNum(RegNo);
-}
-
 inline static unsigned char ModRMByte(unsigned Mod, unsigned RegOpcode,
                                       unsigned RM) {
   assert(Mod < 4 && RegOpcode < 8 && RM < 8 && "ModRM Fields out of range!");
@@ -360,7 +353,7 @@ inline static unsigned char ModRMByte(unsigned Mod, unsigned RegOpcode,
 template<class CodeEmitter>
 void Emitter<CodeEmitter>::emitRegModRMByte(unsigned ModRMReg,
                                             unsigned RegOpcodeFld){
-  MCE.emitByte(ModRMByte(3, RegOpcodeFld, getX86RegNum(ModRMReg)));
+  MCE.emitByte(ModRMByte(3, RegOpcodeFld, X86_MC::getX86RegNum(ModRMReg)));
 }
 
 template<class CodeEmitter>
@@ -498,7 +491,7 @@ void Emitter<CodeEmitter>::emitMemModRMByte(const MachineInstr &MI,
   // 2-7) and absolute references.
   unsigned BaseRegNo = -1U;
   if (BaseReg != 0 && BaseReg != X86::RIP)
-    BaseRegNo = getX86RegNum(BaseReg);
+    BaseRegNo = X86_MC::getX86RegNum(BaseReg);
 
   if (// The SIB byte must be used if there is an index register.
       IndexReg.getReg() == 0 && 
@@ -574,15 +567,15 @@ void Emitter<CodeEmitter>::emitMemModRMByte(const MachineInstr &MI,
     // Manual 2A, table 2-7. The displacement has already been output.
     unsigned IndexRegNo;
     if (IndexReg.getReg())
-      IndexRegNo = getX86RegNum(IndexReg.getReg());
+      IndexRegNo = X86_MC::getX86RegNum(IndexReg.getReg());
     else // Examples: [ESP+1*<noreg>+4] or [scaled idx]+disp32 (MOD=0,BASE=5)
       IndexRegNo = 4;
     emitSIBByte(SS, IndexRegNo, 5);
   } else {
-    unsigned BaseRegNo = getX86RegNum(BaseReg);
+    unsigned BaseRegNo = X86_MC::getX86RegNum(BaseReg);
     unsigned IndexRegNo;
     if (IndexReg.getReg())
-      IndexRegNo = getX86RegNum(IndexReg.getReg());
+      IndexRegNo = X86_MC::getX86RegNum(IndexReg.getReg());
     else
       IndexRegNo = 4;   // For example [ESP+1*<noreg>+4]
     emitSIBByte(SS, IndexRegNo, BaseRegNo);
@@ -809,7 +802,8 @@ void Emitter<CodeEmitter>::emitInstruction(MachineInstr &MI,
   }
       
   case X86II::AddRegFrm: {
-    MCE.emitByte(BaseOpcode + getX86RegNum(MI.getOperand(CurOp++).getReg()));
+    MCE.emitByte(BaseOpcode +
+                 X86_MC::getX86RegNum(MI.getOperand(CurOp++).getReg()));
     
     if (CurOp == NumOps)
       break;
@@ -844,7 +838,7 @@ void Emitter<CodeEmitter>::emitInstruction(MachineInstr &MI,
   case X86II::MRMDestReg: {
     MCE.emitByte(BaseOpcode);
     emitRegModRMByte(MI.getOperand(CurOp).getReg(),
-                     getX86RegNum(MI.getOperand(CurOp+1).getReg()));
+                     X86_MC::getX86RegNum(MI.getOperand(CurOp+1).getReg()));
     CurOp += 2;
     if (CurOp != NumOps)
       emitConstant(MI.getOperand(CurOp++).getImm(),
@@ -854,7 +848,7 @@ void Emitter<CodeEmitter>::emitInstruction(MachineInstr &MI,
   case X86II::MRMDestMem: {
     MCE.emitByte(BaseOpcode);
     emitMemModRMByte(MI, CurOp,
-                     getX86RegNum(MI.getOperand(CurOp + X86::AddrNumOperands)
+                X86_MC::getX86RegNum(MI.getOperand(CurOp + X86::AddrNumOperands)
                                   .getReg()));
     CurOp +=  X86::AddrNumOperands + 1;
     if (CurOp != NumOps)
@@ -866,7 +860,7 @@ void Emitter<CodeEmitter>::emitInstruction(MachineInstr &MI,
   case X86II::MRMSrcReg:
     MCE.emitByte(BaseOpcode);
     emitRegModRMByte(MI.getOperand(CurOp+1).getReg(),
-                     getX86RegNum(MI.getOperand(CurOp).getReg()));
+                     X86_MC::getX86RegNum(MI.getOperand(CurOp).getReg()));
     CurOp += 2;
     if (CurOp != NumOps)
       emitConstant(MI.getOperand(CurOp++).getImm(),
@@ -880,8 +874,8 @@ void Emitter<CodeEmitter>::emitInstruction(MachineInstr &MI,
       X86II::getSizeOfImm(Desc->TSFlags) : 0;
 
     MCE.emitByte(BaseOpcode);
-    emitMemModRMByte(MI, CurOp+1, getX86RegNum(MI.getOperand(CurOp).getReg()),
-                     PCAdj);
+    emitMemModRMByte(MI, CurOp+1,
+                     X86_MC::getX86RegNum(MI.getOperand(CurOp).getReg()),PCAdj);
     CurOp += AddrOperands + 1;
     if (CurOp != NumOps)
       emitConstant(MI.getOperand(CurOp++).getImm(),
@@ -968,7 +962,7 @@ void Emitter<CodeEmitter>::emitInstruction(MachineInstr &MI,
     MCE.emitByte(BaseOpcode);
     // Duplicate register, used by things like MOV8r0 (aka xor reg,reg).
     emitRegModRMByte(MI.getOperand(CurOp).getReg(),
-                     getX86RegNum(MI.getOperand(CurOp).getReg()));
+                     X86_MC::getX86RegNum(MI.getOperand(CurOp).getReg()));
     ++CurOp;
     break;