Safe Haskell	Safe-Inferred
Language	Haskell2010

GHC.StgToCmm.Types

Synopsis

data CmmCgInfos = CmmCgInfos {
- cgNonCafs :: !NonCaffySet
- cgLFInfos :: !ModuleLFInfos
- cgIPEStub :: !CStub
}
data LambdaFormInfo
- = LFReEntrant !TopLevelFlag !RepArity !Bool !ArgDescr
- | LFThunk !TopLevelFlag !Bool !Bool !StandardFormInfo !Bool
- | LFCon !DataCon
- | LFUnknown !Bool
- | LFUnlifted
- | LFLetNoEscape
type ModuleLFInfos = NameEnv LambdaFormInfo
data StandardFormInfo
- = NonStandardThunk
- | SelectorThunk !WordOff
- | ApThunk !RepArity
type DoSCCProfiling = Bool
type DoExtDynRefs = Bool

Documentation

data CmmCgInfos Source #

Codegen-generated Id infos, to be passed to downstream via interfaces.

This stuff is for optimization purposes only, they're not compulsory.

When CafInfo of an imported Id is not known it's safe to treat it as CAFFY.
When LambdaFormInfo of an imported Id is not known it's safe to treat it as `LFUnknown True` (which just says "it could be anything" and we do slow entry).

See also Note [Conveying CAF-info and LFInfo between modules] above.

Constructors

CmmCgInfos
Fields cgNonCafs :: !NonCaffySet Exported Non-CAFFY closures in the current module. Everything else is either not exported of CAFFY. cgLFInfos :: !ModuleLFInfos LambdaFormInfos of exported closures in the current module. cgIPEStub :: !CStub The C stub which is used for IPE information

data LambdaFormInfo Source #

Information about an identifier, from the code generator's point of view. Every identifier is bound to a LambdaFormInfo in the environment, which gives the code generator enough info to be able to tail call or return that identifier.

Constructors

LFReEntrant !TopLevelFlag !RepArity !Bool !ArgDescr
LFThunk !TopLevelFlag !Bool !Bool !StandardFormInfo !Bool
LFCon !DataCon
LFUnknown !Bool
LFUnlifted
LFLetNoEscape

Instances

Instances details

Outputable LambdaFormInfo Source #
Instance details Defined in GHC.StgToCmm.Types Methods ppr :: LambdaFormInfo -> SDoc Source #

type ModuleLFInfos = NameEnv LambdaFormInfo Source #

Maps names in the current module to their LambdaFormInfos

data StandardFormInfo Source #

StandardFormInfo tells whether this thunk has one of a small number of standard forms

Constructors

NonStandardThunk
SelectorThunk !WordOff
ApThunk !RepArity

Instances

Instances details

Outputable StandardFormInfo Source #
Instance details Defined in GHC.StgToCmm.Types Methods ppr :: StandardFormInfo -> SDoc Source #
Eq StandardFormInfo Source #
Instance details Defined in GHC.StgToCmm.Types Methods (==) :: StandardFormInfo -> StandardFormInfo -> Bool # (/=) :: StandardFormInfo -> StandardFormInfo -> Bool #

type DoSCCProfiling = Bool Source #

type DoExtDynRefs = Bool Source #