LLVM 20.0.0git |
This class tracks both per-statepoint and per-selectiondag information.More...
#include "CodeGen/SelectionDAG/StatepointLowering.h"
Public Member Functions | |
| StatepointLoweringState ()=default | |
| void | startNewStatepoint (SelectionDAGBuilder &Builder) |
| Reset all state tracking for a newly encountered safepoint. | |
| void | clear () |
| Clear the memory usage of this object. | |
| SDValue | getLocation (SDValue Val) |
| Returns the spill location of a value incoming to the current statepoint. | |
| void | setLocation (SDValue Val,SDValue Location) |
| void | scheduleRelocCall (constGCRelocateInst &RelocCall) |
| Record the fact that we expect to encounter a given gc_relocate before the next statepoint. | |
| void | relocCallVisited (constGCRelocateInst &RelocCall) |
| Remove this gc_relocate from the list we're expecting to see before the next statepoint. | |
| SDValue | allocateStackSlot (EVTValueType,SelectionDAGBuilder &Builder) |
| Get a stack slot we can use to store an value of type ValueType. | |
| void | reserveStackSlot (intOffset) |
| bool | isStackSlotAllocated (intOffset) |
This class tracks both per-statepoint and per-selectiondag information.
For each statepoint it tracks locations of it's gc valuess (incoming and relocated) and list of gcreloc calls scheduled for visiting (this is used for a debug mode consistency check only). The spill slot tracking works in concert with information inFunctionLoweringInfo.
Definition at line33 of fileStatepointLowering.h.
| default |
| SDValue StatepointLoweringState::allocateStackSlot | ( | EVT | ValueType, |
| SelectionDAGBuilder & | Builder | ||
| ) |
Get a stack slot we can use to store an value of type ValueType.
This will hopefully be a recylced slot from another statepoint.
Definition at line107 of fileStatepointLowering.cpp.
Referencesassert(),llvm::SelectionDAG::CreateStackTemporary(),llvm::SelectionDAGBuilder::DAG,llvm::SelectionDAGBuilder::FuncInfo,llvm::SelectionDAG::getFrameIndex(),llvm::MachineFunction::getFrameInfo(),llvm::SelectionDAG::getMachineFunction(),llvm::MachineFrameInfo::getObjectSize(),llvm::MachineFrameInfo::markAsStatepointSpillSlotObjectIndex(),llvm::SmallVectorTemplateBase< T, bool >::push_back(),llvm::SmallBitVector::resize(),llvm::SmallBitVector::set(),llvm::SmallBitVector::size(),llvm::SmallVectorBase< Size_T >::size(),llvm::FunctionLoweringInfo::StatepointStackSlots, andllvm::SmallBitVector::test().
Referenced byspillIncomingStatepointValue().
| void StatepointLoweringState::clear | ( | ) |
Clear the memory usage of this object.
This is called fromSelectionDAGBuilder::clear. We require this is never called in the midst of processing a statepoint sequence.
Definition at line99 of fileStatepointLowering.cpp.
Referencesassert(), andllvm::SmallBitVector::clear().
Referenced byllvm::SelectionDAGBuilder::clear().
Returns the spill location of a value incoming to the current statepoint.
Will return SDValue() if this value hasn't been spilled. Otherwise, the value has already been spilled and no further action is required by the caller.
Definition at line50 of fileStatepointLowering.h.
ReferencesI.
Referenced byllvm::SelectionDAGBuilder::LowerAsSTATEPOINT(),reservePreviousStackSlotForValue(), andspillIncomingStatepointValue().
| inline |
Definition at line100 of fileStatepointLowering.h.
Referencesassert(),llvm::Offset,llvm::SmallBitVector::size(), andllvm::SmallBitVector::test().
Referenced byreservePreviousStackSlotForValue().
| inline |
Remove this gc_relocate from the list we're expecting to see before the next statepoint.
If we weren't expecting to see it, we'll report an assertion.
Definition at line75 of fileStatepointLowering.h.
Referencesassert(),llvm::find(),I, andllvm::Value::use_empty().
| inline |
Definition at line92 of fileStatepointLowering.h.
Referencesassert(),llvm::Offset,llvm::SmallBitVector::set(),llvm::SmallBitVector::size(), andllvm::SmallBitVector::test().
Referenced byreservePreviousStackSlotForValue().
| inline |
Record the fact that we expect to encounter a given gc_relocate before the next statepoint.
If we don't see it, we'll report an assertion.
Definition at line66 of fileStatepointLowering.h.
Referencesllvm::Value::use_empty().
Referenced byllvm::SelectionDAGBuilder::LowerAsSTATEPOINT().
Definition at line57 of fileStatepointLowering.h.
Referencesassert().
Referenced byllvm::SelectionDAGBuilder::LowerAsSTATEPOINT(),reservePreviousStackSlotForValue(), andspillIncomingStatepointValue().
| void StatepointLoweringState::startNewStatepoint | ( | SelectionDAGBuilder & | Builder | ) |
Reset all state tracking for a newly encountered safepoint.
Also performs some consistency checking.
Definition at line86 of fileStatepointLowering.cpp.
Referencesassert(),llvm::SmallBitVector::clear(),llvm::SelectionDAGBuilder::FuncInfo,llvm::SmallBitVector::resize(),llvm::SmallVectorBase< Size_T >::size(), andllvm::FunctionLoweringInfo::StatepointStackSlots.
Referenced byllvm::SelectionDAGBuilder::LowerAsSTATEPOINT().
1.9.6