Added phi elimination code
llvm-svn: 1265
diff --git a/llvm/lib/Target/Sparc/SparcRegInfo.cpp b/llvm/lib/Target/Sparc/SparcRegInfo.cpp
index cb7009d..4040b02 100644
--- a/llvm/lib/Target/Sparc/SparcRegInfo.cpp
+++ b/llvm/lib/Target/Sparc/SparcRegInfo.cpp
@@ -893,7 +893,6 @@
// register number
//---------------------------------------------------------------------------
-
MachineInstr * UltraSparcRegInfo::cpReg2RegMI(const unsigned SrcReg,
const unsigned DestReg,
const int RegType) const {
@@ -1040,24 +1039,56 @@
-// Following method is Not needed now
-MachineInstr* UltraSparcRegInfo::cpValue2Value(Value *Src, Value *Dest) const {
+//---------------------------------------------------------------------------
+// Generate a copy instruction to copy a value to another. Temporarily
+// used by PhiElimination code.
+//---------------------------------------------------------------------------
+
+
+MachineInstr * UltraSparcRegInfo::cpValue2Value(Value *Src, Value *Dest) const{
+
+ int RegType = getRegType( Src );
+
+ assert( (RegType==getRegType(Src)) && "Src & Dest are diff types");
MachineInstr * MI = NULL;
- MI = new MachineInstr(ADD, 3);
- MI->SetMachineOperand(0, MachineOperand:: MO_VirtualRegister, Src, false);
- MI->SetMachineOperand(1, SparcIntRegOrder::g0, false);
- MI->SetMachineOperand(2, MachineOperand:: MO_VirtualRegister, Dest, true);
-
+ switch( RegType ) {
+
+ case IntRegType:
+
+ MI = new MachineInstr(ADD, 3);
+ MI->SetMachineOperand(0, MachineOperand:: MO_VirtualRegister, Src, false);
+ MI->SetMachineOperand(1, SparcIntRegOrder::g0, false);
+ MI->SetMachineOperand(2, MachineOperand:: MO_VirtualRegister, Dest, true);
+ break;
+
+ case FPSingleRegType:
+ MI = new MachineInstr(FMOVS, 2);
+ MI->SetMachineOperand(0, MachineOperand:: MO_VirtualRegister, Src, false);
+ MI->SetMachineOperand(1, MachineOperand:: MO_VirtualRegister, Dest, true);
+ break;
+
+
+ case FPDoubleRegType:
+ MI = new MachineInstr(FMOVD, 2);
+ MI->SetMachineOperand(0, MachineOperand:: MO_VirtualRegister, Src, false);
+ MI->SetMachineOperand(1, MachineOperand:: MO_VirtualRegister, Dest, true);
+ break;
+
+ default:
+ assert(0 && "Unknow RegType in CpValu2Value");
+ }
return MI;
-
}
+
+
+
//----------------------------------------------------------------------------
// This method inserts caller saving/restoring instructons before/after
// a call machine instruction.