Module rustc_middle::mir::syntax

This defines the syntax of MIR, i.e., the set of available MIR operations, and other definitions closely related to MIR semantics. This is in a dedicated file so that changes to this file can be reviewed more carefully. The intention is that this file only contains datatype declarations, no code.

Modules

size_asserts 🔒

Structs

CopyNonOverlapping

Coverage

Place

Places roughly correspond to a “location in memory.” Places in MIR are the same mathematical object as places in Rust. This of course means that what exactly they are is undecided and part of the Rust memory model. However, they will likely contain at least the following pieces of information in some form:

Enums

AggregateKind

AnalysisPhase

See MirPhase::Analysis.

AssertKind

Information about an assertion failure.

BinOp

BorrowKind

CastKind

FakeReadCause

The FakeReadCause describes the type of pattern why a FakeRead statement exists.

InlineAsmOperand

MirPhase

Represents the “flavors” of MIR.

NonDivergingIntrinsic

NullOp

Operand

An operand in MIR represents a “value” in Rust, the definition of which is undecided and part of the memory model. One proposal for a definition of values can be found on UCG.

ProjectionElem

The different kinds of projections that can be used in the projection of a Place.

RetagKind

Describes what kind of retag is to be performed.

RuntimePhase

See MirPhase::Runtime.

Rvalue

The various kinds of rvalues that can appear in MIR.

StatementKind

The various kinds of statements that can appear in MIR.

TerminatorKind

The various kinds of terminators, representing ways of exiting from a basic block.

UnOp

Type Definitions

AssertMessage

Type for MIR Assert terminator error messages.

PlaceElem

Alias for projections as they appear in places, where the base is a place and the index is a local.

UpvarProjectionElem

Alias for projections that appear in PlaceBuilder::Upvar, for which we cannot provide any field types.