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Split JMPL into JMPLCALL and JMPLRET so that IsCall and IsReturn can

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be used to distinguish those uses of the `jmpl' instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@940 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve 2001-10-22 13:41:12 +00:00
parent fb36112c8d
commit 53fec86ffd
1 changed files with 9 additions and 11 deletions
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18
lib/Target/SparcV9/SparcV9RegInfo.cpp
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@ -35,7 +35,7 @@ UltraSparcRegInfo::getCallInstRetVal(const MachineInstr *CallMI) const{
return CallMI->getImplicitRef(NumOfImpRefs-2); return CallMI->getImplicitRef(NumOfImpRefs-2);
} }
else if( OpCode == JMPL) { else if( OpCode == JMPLCALL) {
// The last implicit operand is the return value of a JMPL in // The last implicit operand is the return value of a JMPL in
if( NumOfImpRefs > 0 ) if( NumOfImpRefs > 0 )
@ -67,7 +67,7 @@ UltraSparcRegInfo::getCallInstRetAddr(const MachineInstr *CallMI)const {
return CallMI->getImplicitRef(NumOfImpRefs-1); return CallMI->getImplicitRef(NumOfImpRefs-1);
} }
else if( OpCode == JMPL ) { else if( OpCode == JMPLCALL ) {
MachineOperand & MO = ( MachineOperand &) CallMI->getOperand(2); MachineOperand & MO = ( MachineOperand &) CallMI->getOperand(2);
return MO.getVRegValue(); return MO.getVRegValue();
@ -84,7 +84,7 @@ UltraSparcRegInfo::getCallInstRetAddr(const MachineInstr *CallMI)const {
//--------------------------------------------------------------------------- //---------------------------------------------------------------------------
// Finds the # of actaul arguments of the call instruction // Finds the # of actual arguments of the call instruction
//--------------------------------------------------------------------------- //---------------------------------------------------------------------------
const unsigned const unsigned
@ -111,7 +111,7 @@ UltraSparcRegInfo::getCallInstNumArgs(const MachineInstr *CallMI) const {
} }
} }
else if( OpCode == JMPL ) { else if( OpCode == JMPLCALL ) {
// The last implicit operand is the return value of a JMPL instr // The last implicit operand is the return value of a JMPL instr
if( NumOfImpRefs > 0 ) { if( NumOfImpRefs > 0 ) {
@ -136,19 +136,17 @@ UltraSparcRegInfo::getCallInstNumArgs(const MachineInstr *CallMI) const {
//--------------------------------------------------------------------------- //---------------------------------------------------------------------------
// Suggests a register for the ret address in the RET machine instruction // Suggests a register for the ret address in the RET machine instruction
//--------------------------------------------------------------------------- //---------------------------------------------------------------------------
void UltraSparcRegInfo::suggestReg4RetAddr(const MachineInstr * RetMI, void UltraSparcRegInfo::suggestReg4RetAddr(const MachineInstr * RetMI,
LiveRangeInfo& LRI) const { LiveRangeInfo& LRI) const {
assert( (RetMI->getNumOperands() == 2) && "RETURN must have 2 operands"); assert( (RetMI->getNumOperands() >= 2)
&& "JMPL/RETURN must have 3 and 2 operands respectively");
MachineOperand & MO = ( MachineOperand &) RetMI->getOperand(0); MachineOperand & MO = ( MachineOperand &) RetMI->getOperand(0);
MO.setRegForValue( getUnifiedRegNum( IntRegClassID, SparcIntRegOrder::i7) ); MO.setRegForValue( getUnifiedRegNum( IntRegClassID, SparcIntRegOrder::i7) );
// ***TODO: If the JMPL can be also used as a return instruction,
// change the assertion. The return address register of JMPL will still
// be Operand(0)
// TODO (Optimize): // TODO (Optimize):
// Instead of setting the color, we can suggest one. In that case, // Instead of setting the color, we can suggest one. In that case,
// we have to test later whether it received the suggested color. // we have to test later whether it received the suggested color.