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.

Structs

• ConstOperand
• 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:
• SwitchTargets

Enums

• AggregateKind
• AnalysisPhase
  See MirPhase::Analysis.
• AssertKind
  Information about an assertion failure.
• BinOp
• BorrowKind
• CallSource
  Represents how a TerminatorKind::Call was constructed, used for diagnostics
• CastKind
• FakeReadCause
  The FakeReadCause describes the type of pattern why a FakeRead statement exists.
• InlineAsmOperand
• MirPhase
  Represents the “flavors” of MIR.
• MutBorrowKind
• 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
• 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
• UnwindAction
  Action to be taken when a stack unwind happens.
• UnwindTerminateReason
  The reason we are terminating the process during unwinding.

Type Aliases

• 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.