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Add a new kind of MachineOperand: MO_TargetIndex.

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A target index operand looks a lot like a constant pool reference, but
it is completely target-defined. It contains the 8-bit TargetFlags, a
32-bit index, and a 64-bit offset. It is preserved by all code generator
passes.

TargetIndex operands can be used to carry target-specific information in
cases where immediate operands won't suffice.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161441 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-08-07 18:56:39 +00:00
parent ea708d1071
commit 0b40d09ff6
3 changed files with 30 additions and 6 deletions
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7
lib/CodeGen/MachineInstr.cpp
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@@ -208,6 +208,7 @@ bool MachineOperand::isIdenticalTo(const MachineOperand &Other) const {
case MachineOperand::MO_FrameIndex:
return getIndex() == Other.getIndex();
case MachineOperand::MO_ConstantPoolIndex:
case MachineOperand::MO_TargetIndex:
return getIndex() == Other.getIndex() && getOffset() == Other.getOffset();
case MachineOperand::MO_JumpTableIndex:
return getIndex() == Other.getIndex();
@@ -245,6 +246,7 @@ hash_code llvm::hash_value(const MachineOperand &MO) {
case MachineOperand::MO_FrameIndex:
return hash_combine(MO.getType(), MO.getTargetFlags(), MO.getIndex());
case MachineOperand::MO_ConstantPoolIndex:
case MachineOperand::MO_TargetIndex:
return hash_combine(MO.getType(), MO.getTargetFlags(), MO.getIndex(),
MO.getOffset());
case MachineOperand::MO_JumpTableIndex:
@@ -353,6 +355,11 @@ void MachineOperand::print(raw_ostream &OS, const TargetMachine *TM) const {
if (getOffset()) OS << "+" << getOffset();
OS << '>';
break;
case MachineOperand::MO_TargetIndex:
OS << "<ti#" << getIndex();
if (getOffset()) OS << "+" << getOffset();
OS << '>';
break;
case MachineOperand::MO_JumpTableIndex:
OS << "<jt#" << getIndex() << '>';
break;