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Add a RegisterMaskSDNode class.

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This SelectionDAG node will be attached to call nodes by LowerCall(),
and eventually becomes a MO_RegisterMask MachineOperand on the
MachineInstr representing the call instruction.

LowerCall() will attach a register mask that depends on the calling
convention.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148436 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-01-18 23:52:12 +00:00
parent 8887a0f341
commit 9cf37e8b48
7 changed files with 41 additions and 3 deletions
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lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+2
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@@ -351,6 +351,8 @@ void InstrEmitter::AddOperand(MachineInstr *MI, SDValue Op,
MI->addOperand(MachineOperand::CreateFPImm(CFP));
} else if (RegisterSDNode *R = dyn_cast<RegisterSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateReg(R->getReg(), false));
} else if (RegisterMaskSDNode *RM = dyn_cast<RegisterMaskSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateRegMask(RM->getRegMask()));
} else if (GlobalAddressSDNode *TGA = dyn_cast<GlobalAddressSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateGA(TGA->getGlobal(), TGA->getOffset(),
TGA->getTargetFlags()));