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[InstrInfo] Refactor foldOperandImpl to thread through InsertPt. NFC

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Summary:
This was a longstanding FIXME and is a necessary precursor to cases
where foldOperandImpl may have to create more than one instruction
(e.g. to constrain a register class). This is the split out NFC changes from
D6262.

Reviewers: pete, ributzka, uweigand, mcrosier

Reviewed By: mcrosier

Subscribers: mcrosier, ted, llvm-commits

Differential Revision: http://reviews.llvm.org/D10174

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239336 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Keno Fischer
2015-06-08 20:09:58 +00:00
parent 279ef837e8
commit 4332f869bf
13 changed files with 132 additions and 104 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
include/llvm/Target/TargetInstrInfo.h
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@@ -711,20 +711,22 @@ protected:
/// Target-dependent implementation for foldMemoryOperand.
/// Target-independent code in foldMemoryOperand will
/// take care of adding a MachineMemOperand to the newly created instruction.
virtual MachineInstr *foldMemoryOperandImpl(MachineFunction &MF,
MachineInstr *MI,
ArrayRef<unsigned> Ops,
int FrameIndex) const {
/// The instruction and any auxiliary instructions necessary will be inserted
/// at InsertPt.
virtual MachineInstr *foldMemoryOperandImpl(
MachineFunction &MF, MachineInstr *MI, ArrayRef<unsigned> Ops,
MachineBasicBlock::iterator InsertPt, int FrameIndex) const {
return nullptr;
}
/// Target-dependent implementation for foldMemoryOperand.
/// Target-independent code in foldMemoryOperand will
/// take care of adding a MachineMemOperand to the newly created instruction.
virtual MachineInstr *foldMemoryOperandImpl(MachineFunction &MF,
MachineInstr *MI,
ArrayRef<unsigned> Ops,
MachineInstr *LoadMI) const {
/// The instruction and any auxiliary instructions necessary will be inserted
/// at InsertPt.
virtual MachineInstr *foldMemoryOperandImpl(
MachineFunction &MF, MachineInstr *MI, ArrayRef<unsigned> Ops,
MachineBasicBlock::iterator InsertPt, MachineInstr *LoadMI) const {
return nullptr;
}