Target/XCore/XCoreInstrInfo.cpp

1 //===-- XCoreInstrInfo.cpp - XCore Instruction Information ----------------===//
9 // This file contains the XCore implementation of the TargetInstrInfo class.
14 #include "XCore.h"
34 namespace XCore {
36   // XCore Condition Codes
49   : XCoreGenInstrInfo(XCore::ADJCALLSTACKDOWN, XCore::ADJCALLSTACKUP),
65   if (Opcode == XCore::LDWFI)
85   if (Opcode == XCore::STWFI)
102   return BrOpc == XCore::BRFU_u6
103       || BrOpc == XCore::BRFU_lu6
104       || BrOpc == XCore::BRBU_u6
105       || BrOpc == XCore::BRBU_lu6;
109   return BrOpc == XCore::BRFT_ru6
110       || BrOpc == XCore::BRFT_lru6
111       || BrOpc == XCore::BRBT_ru6
112       || BrOpc == XCore::BRBT_lru6;
116   return BrOpc == XCore::BRFF_ru6
117       || BrOpc == XCore::BRFF_lru6
118       || BrOpc == XCore::BRBF_ru6
119       || BrOpc == XCore::BRBF_lru6;
127   return BrOpc == XCore::BR_JT
128       || BrOpc == XCore::BR_JT32;
131 /// GetCondFromBranchOpc - Return the XCore CC that matches
133 static XCore::CondCode GetCondFromBranchOpc(unsigned BrOpc)
136     return XCore::COND_TRUE;
138     return XCore::COND_FALSE;
140     return XCore::COND_INVALID;
146 static inline unsigned GetCondBranchFromCond(XCore::CondCode CC)
150   case XCore::COND_TRUE   : return XCore::BRFT_lru6;
151   case XCore::COND_FALSE  : return XCore::BRFF_lru6;
157 static inline XCore::CondCode GetOppositeBranchCondition(XCore::CondCode CC)
161   case XCore::COND_TRUE   : return XCore::COND_FALSE;
162   case XCore::COND_FALSE  : return XCore::COND_TRUE;
212     XCore::CondCode BranchCode = GetCondFromBranchOpc(LastInst->getOpcode());
213     if (BranchCode == XCore::COND_INVALID)
233   XCore::CondCode BranchCode = GetCondFromBranchOpc(SecondLastOpc);
237   if (BranchCode != XCore::COND_INVALID
286       BuildMI(&MBB, DL, get(XCore::BRFU_lu6)).addMBB(TBB);
289       unsigned Opc = GetCondBranchFromCond((XCore::CondCode)Cond[0].getImm());
298   unsigned Opc = GetCondBranchFromCond((XCore::CondCode)Cond[0].getImm());
301   BuildMI(&MBB, DL, get(XCore::BRFU_lu6)).addMBB(FBB);
335   bool GRDest = XCore::GRRegsRegClass.contains(DestReg);
336   bool GRSrc  = XCore::GRRegsRegClass.contains(SrcReg);
339     BuildMI(MBB, I, DL, get(XCore::ADD_2rus), DestReg)
345   if (GRDest && SrcReg == XCore::SP) {
346     BuildMI(MBB, I, DL, get(XCore::LDAWSP_ru6), DestReg).addImm(0);
350   if (DestReg == XCore::SP && GRSrc) {
351     BuildMI(MBB, I, DL, get(XCore::SETSP_1r))
371   BuildMI(MBB, I, DL, get(XCore::STWFI))
393   BuildMI(MBB, I, DL, get(XCore::LDWFI), DestReg)
402           "Invalid XCore branch condition!");
403   Cond[0].setImm(GetOppositeBranchCondition((XCore::CondCode)Cond[0].getImm()));
432     return BuildMI(MBB, MI, dl, get(XCore::MKMSK_rus), Reg)
437     int Opcode = isImmU6(Value) ? XCore::LDC_ru6 : XCore::LDC_lru6;
444   return BuildMI(MBB, MI, dl, get(XCore::LDWCP_lru6), Reg)