class RegBankSelect::EdgeInsertPoint

Declaration

class RegBankSelect::EdgeInsertPoint : public InsertPoint { /* full declaration omitted */ };

Description

Insertion point on an edge.

Declared at: llvm/include/llvm/CodeGen/GlobalISel/RegBankSelect.h:273

Inherits from: RegBankSelect::InsertPoint

Member Variables

private llvm::MachineBasicBlock& Src

Source of the edge.

private llvm::MachineBasicBlock* DstOrSplit

Destination of the edge. After the materialization is done, this hold the basic block that resulted from the splitting.

private llvm::Pass& P

P is used to update the analysis passes as applicable.

Inherited from RegBankSelect::InsertPoint:

protected WasMaterialized = false

Method Overview

• public EdgeInsertPoint(llvm::MachineBasicBlock & Src, llvm::MachineBasicBlock & Dst, llvm::Pass & P)
• public bool canMaterialize() const
• public uint64_t frequency(const llvm::Pass & P) const
• private llvm::MachineBasicBlock & getInsertMBBImpl()
• private MachineBasicBlock::iterator getPointImpl()
• public bool isSplit() const
• private void materialize()

Inherited from RegBankSelect::InsertPoint:

• public canMaterialize
• public frequency
• public getInsertMBB
• protected getInsertMBBImpl
• public getPoint
• protected getPointImpl
• public insert
• public isSplit
• protected materialize

Methods

¶EdgeInsertPoint(llvm::MachineBasicBlock& Src,
                llvm::MachineBasicBlock& Dst,
                llvm::Pass& P)

Declared at: llvm/include/llvm/CodeGen/GlobalISel/RegBankSelect.h:301

Parameters

llvm::MachineBasicBlock& Src

llvm::MachineBasicBlock& Dst

llvm::Pass& P

¶bool canMaterialize() const

Description

Check whether this insertion point can be materialized. As soon as ::getPoint is called and thus, the point materialized calling this method does not make sense.

Declared at: llvm/include/llvm/CodeGen/GlobalISel/RegBankSelect.h:309

¶uint64_t frequency(const llvm::Pass& P) const

Description

Frequency of the insertion point.\p P is used to access the various analysis that will help to get that information, like MachineBlockFrequencyInfo. If \p P does not contain enough enough to return the actual frequency, this returns 1.

Declared at: llvm/include/llvm/CodeGen/GlobalISel/RegBankSelect.h:308

Parameters

const llvm::Pass& P

¶llvm::MachineBasicBlock& getInsertMBBImpl()

Description

Return the materialized insertion basic block. Code will be inserted into that basic block.

Declared at: llvm/include/llvm/CodeGen/GlobalISel/RegBankSelect.h:298

¶MachineBasicBlock::iterator getPointImpl()

Description

Return the materialized insertion point. Code will be inserted before that point.

Declared at: llvm/include/llvm/CodeGen/GlobalISel/RegBankSelect.h:288

¶bool isSplit() const

Description

Does this point involve splitting an edge or block? As soon as ::getPoint is called and thus, the point materialized, the point will not require splitting anymore, i.e., this will return false.

Declared at: llvm/include/llvm/CodeGen/GlobalISel/RegBankSelect.h:304

¶void materialize()

Description

Materialize the insertion point. If isSplit() is true, this involves actually splitting the block or edge.

Declared at: llvm/include/llvm/CodeGen/GlobalISel/RegBankSelect.h:286