ghc-8.2.2: The GHC API

Safe Haskell | None
Language | Haskell2010

StgCmmExtCode

Description

Our extended FCode monad.

Synopsis

- data CmmParse a
- unEC :: CmmParse a -> String -> Env -> Decls -> FCode (Decls, a)
- data Named
  - = VarN CmmExpr
  - | FunN UnitId
  - | LabelN BlockId
- type Env = UniqFM Named
- loopDecls :: CmmParse a -> CmmParse a
- getEnv :: CmmParse Env
- withName :: String -> CmmParse a -> CmmParse a
- getName :: CmmParse String
- newLocal :: CmmType -> FastString -> CmmParse LocalReg
- newLabel :: FastString -> CmmParse BlockId
- newBlockId :: MonadUnique m => m BlockId
- newFunctionName :: FastString -> UnitId -> ExtCode
- newImport :: (FastString, CLabel) -> CmmParse ()
- lookupLabel :: FastString -> CmmParse BlockId
- lookupName :: FastString -> CmmParse CmmExpr
- code :: FCode a -> CmmParse a
- emit :: CmmAGraph -> CmmParse ()
- emitLabel :: BlockId -> CmmParse ()
- emitAssign :: CmmReg -> CmmExpr -> CmmParse ()
- emitStore :: CmmExpr -> CmmExpr -> CmmParse ()
- getCode :: CmmParse a -> CmmParse CmmAGraph
- getCodeR :: CmmParse a -> CmmParse (a, CmmAGraph)
- getCodeScoped :: CmmParse a -> CmmParse (a, CmmAGraphScoped)
- emitOutOfLine :: BlockId -> CmmAGraphScoped -> CmmParse ()
- withUpdFrameOff :: UpdFrameOffset -> CmmParse () -> CmmParse ()
- getUpdFrameOff :: CmmParse UpdFrameOffset

# Documentation

data CmmParse a #

Does a computation in the FCode monad, with a current environment and a list of local declarations. Returns the resulting list of declarations.

Instances

Monad CmmParse # |
Methods (>>=) :: CmmParse a -> (a -> CmmParse b) -> CmmParse b Source # (>>) :: CmmParse a -> CmmParse b -> CmmParse b Source # return :: a -> CmmParse a Source # fail :: String -> CmmParse a Source #
Functor CmmParse # |
Methods fmap :: (a -> b) -> CmmParse a -> CmmParse b Source # (<$) :: a -> CmmParse b -> CmmParse a Source #
Applicative CmmParse # |
Methods pure :: a -> CmmParse a Source # (<*>) :: CmmParse (a -> b) -> CmmParse a -> CmmParse b Source # liftA2 :: (a -> b -> c) -> CmmParse a -> CmmParse b -> CmmParse c Source # (*>) :: CmmParse a -> CmmParse b -> CmmParse b Source # (<*) :: CmmParse a -> CmmParse b -> CmmParse a Source #
MonadUnique CmmParse # |
Methods getUniqueSupplyM :: CmmParse UniqSupply # getUniqueM :: CmmParse Unique # getUniquesM :: CmmParse [Unique] #
HasDynFlags CmmParse # |
Methods getDynFlags :: CmmParse DynFlags #

unEC :: CmmParse a -> String -> Env -> Decls -> FCode (Decls, a) #

data Named #

The environment contains variable definitions or blockids.

Constructors

VarN CmmExpr | Holds CmmLit(CmmLabel ..) which gives the label type, eg, RtsLabel, ForeignLabel, CmmLabel etc.
FunN UnitId | A function name from this package
LabelN BlockId | A blockid of some code or data.

type Env = UniqFM Named #

An environment of named things.

loopDecls :: CmmParse a -> CmmParse a #

Takes the variable decarations and imports from the monad and makes an environment, which is looped back into the computation. In this way, we can have embedded declarations that scope over the whole procedure, and imports that scope over the entire module. Discards the local declaration contained within decl'

getEnv :: CmmParse Env #

Get the current environment from the monad.

withName :: String -> CmmParse a -> CmmParse a #

Set context name for a sub-parse

getName :: CmmParse String #

Get the current context name from the monad

newLocal #

Arguments

:: CmmType | data type
-> FastString | name of variable
-> CmmParse LocalReg | register holding the value

Create a fresh local variable of a given type.

newLabel :: FastString -> CmmParse BlockId #

Allocate a fresh label.

newBlockId :: MonadUnique m => m BlockId #

newFunctionName #

Arguments

:: FastString | name of the function
-> UnitId | package of the current module
-> ExtCode |

Add add a local function to the environment.

newImport :: (FastString, CLabel) -> CmmParse () #

Add an imported foreign label to the list of local declarations. If this is done at the start of the module the declaration will scope over the whole module.

lookupLabel :: FastString -> CmmParse BlockId #

Lookup the BlockId bound to the label with this name. If one hasn't been bound yet, create a fresh one based on the Unique of the name.

lookupName :: FastString -> CmmParse CmmExpr #

Lookup the location of a named variable. Unknown names are treated as if they had been 'import'ed from the runtime system. This saves us a lot of bother in the RTS sources, at the expense of deferring some errors to link time.

code :: FCode a -> CmmParse a #

Lift an FCode computation into the CmmParse monad

emit :: CmmAGraph -> CmmParse () #

emitLabel :: BlockId -> CmmParse () #

emitAssign :: CmmReg -> CmmExpr -> CmmParse () #

emitStore :: CmmExpr -> CmmExpr -> CmmParse () #

getCode :: CmmParse a -> CmmParse CmmAGraph #

getCodeR :: CmmParse a -> CmmParse (a, CmmAGraph) #

getCodeScoped :: CmmParse a -> CmmParse (a, CmmAGraphScoped) #

emitOutOfLine :: BlockId -> CmmAGraphScoped -> CmmParse () #

withUpdFrameOff :: UpdFrameOffset -> CmmParse () -> CmmParse () #

getUpdFrameOff :: CmmParse UpdFrameOffset #