llvm::InstructionSelector

Name

Description

GIMatchTableExecutor

Executes GlobalISel match tables for instruction selection and combining.

Name

Description

ExecInfoTy

Tables and maps used while interpreting a target match table.

Name

Description

~InstructionSelector [destructor] [virtual]

Destroy this instruction selector.

select [virtual]

Select instruction I to use only target‐specific opcodes.

setupGeneratedPerFunctionState [virtual]

Set up target‐generated per‐function state for MF.

setupMF [virtual]

Setup per‐MF executor state.

Name

Description

fastDecodeULEB128

Decode a ULEB128 value from MatchTable at CurrentIdx.

Name

Description

AllObservers

Note: InstructionSelect does not track changed instructions. changingInstr() and changedInstr() will never be called on these observers.

BFI

Optional block frequency info for size‐optimization decisions.

CoverageInfo

Optional rule coverage tracking for matched patterns.

CurMBB

Basic block currently being matched, when needed by predicates.

MF

Machine function currently being processed.

MORE

Remark emitter used to report instruction selection diagnostics.

PSI

Optional profile summary info for size‐optimization decisions.

VT

Optional value tracking analysis for the current function.

Name

Description

MatcherState

Mutable state shared across match‐table opcode handlers.

Name

Description

ComplexRendererFns

Optional list of complex‐pattern operand renderer callbacks.

NewMIVector

Small vector of newly built machine instructions.

RecordedMIVector

Small vector of recorded machine instructions from the match.

Name

Description

executeMatchTable

Execute a given matcher table and return true if the match was successful and false otherwise.

getMatchTable [virtual]

Return the match table used by this executor.

isBaseWithConstantOffset

Return true if the operand is a G_PTR_ADD with a G_CONSTANT RHS.

isObviouslySafeToFold

Return true if MI can obviously be folded into IntoMI.

isOperandImmEqual

Return true if MO equals immediate Value (or a splat of it).

renderFrameIndex

Render a G_FRAME_INDEX operand into MIB.

runCustomAction [virtual]

Run a custom match‐table action and optionally emit new instructions.

shouldOptForSize

Return true if the current function or block should be optimized for size.

testImmPredicate_APFloat [virtual]

Test an APFloat immediate predicate against Imm.

testImmPredicate_APInt [virtual]

Test an APInt immediate predicate against Imm.

testImmPredicate_I64 [virtual]

Test an I64 immediate predicate against Imm.

testMIPredicate_MI [virtual]

Test a C++ machine‐instruction predicate on MI.

testMOPredicate_MO [virtual]

Test a C++ machine‐operand predicate on MO.

testSimplePredicate [virtual]

Test a simple predicate that takes no match‐table arguments.

Name

Description

getRemainingOperands

Return the operands of MI starting at index FirstVarOp.

readBytesAs

Read a value of type Ty from the start of MatchTable.