Safe Haskell	None
Language	GHC2021

GHC.Wasm.ControlFlow

Synopsis

data WasmControl a b (c :: [WasmType]) (d :: [WasmType]) where
- WasmPush :: forall (t :: WasmType) b a (c :: [WasmType]). WasmTypeTag t -> b -> WasmControl a b c (t ': c)
- WasmBlock :: forall (c :: [WasmType]) (d :: [WasmType]) a b. WasmFunctionType c d -> WasmControl a b c d -> WasmControl a b c d
- WasmLoop :: forall (c :: [WasmType]) (d :: [WasmType]) a b. WasmFunctionType c d -> WasmControl a b c d -> WasmControl a b c d
- WasmIfTop :: forall (pre :: [WasmType]) (d :: [WasmType]) a b. WasmFunctionType pre d -> WasmControl a b pre d -> WasmControl a b pre d -> WasmControl a b ('I32 ': pre) d
- WasmBr :: forall a b (c :: [WasmType]) (d :: [WasmType]). Int -> WasmControl a b c d
- WasmFallthrough :: forall a b (c :: [WasmType]) (d :: [WasmType]). WasmControl a b c d
- WasmBrTable :: forall b a (c :: [WasmType]) (d :: [WasmType]). b -> BrTableInterval -> [Int] -> Int -> WasmControl a b c d
- WasmTailCall :: forall b a (c :: [WasmType]) (d :: [WasmType]). b -> WasmControl a b c d
- WasmActions :: forall a b (c :: [WasmType]). a -> WasmControl a b c c
- WasmSeq :: forall a b (c :: [WasmType]) (mid :: [WasmType]) (d :: [WasmType]). WasmControl a b c mid -> WasmControl a b mid d -> WasmControl a b c d
(<>) :: forall s e (pre :: [WasmType]) (mid :: [WasmType]) (post :: [WasmType]). WasmControl s e pre mid -> WasmControl s e mid post -> WasmControl s e pre post
pattern WasmIf :: WasmFunctionType pre post -> e -> WasmControl s e pre post -> WasmControl s e pre post -> WasmControl s e pre post
data BrTableInterval = BrTableInterval {
- bti_lo :: Integer
- bti_count :: Integer
}
inclusiveInterval :: Integer -> Integer -> BrTableInterval
data WasmType
data WasmTypeTag (a :: WasmType) where
- TagI32 :: WasmTypeTag 'I32
- TagI64 :: WasmTypeTag 'I64
- TagF32 :: WasmTypeTag 'F32
- TagF64 :: WasmTypeTag 'F64
data TypeList (a :: [WasmType]) where
- TypeListNil :: TypeList ('[] :: [WasmType])
- TypeListCons :: forall (t :: WasmType) (ts :: [WasmType]). WasmTypeTag t -> TypeList ts -> TypeList (t ': ts)
data WasmFunctionType (pre :: [WasmType]) (post :: [WasmType]) = WasmFunctionType {
- ft_pops :: TypeList pre
- ft_pushes :: TypeList post
}

Documentation

data WasmControl a b (c :: [WasmType]) (d :: [WasmType]) where Source #

Representation of WebAssembly control flow. Normally written as WasmControl s e pre post Type parameter s is the type of (unspecified) statements. It might be instantiated with an open Cmm block or with a sequence of Wasm instructions. Parameter e is the type of expressions. Parameter pre represents the values that are expected on the WebAssembly stack when the code runs, and post represents the state of the stack on completion.

Constructors

WasmPush :: forall (t :: WasmType) b a (c :: [WasmType]). WasmTypeTag t -> b -> WasmControl a b c (t ': c)
WasmBlock :: forall (c :: [WasmType]) (d :: [WasmType]) a b. WasmFunctionType c d -> WasmControl a b c d -> WasmControl a b c d
WasmLoop :: forall (c :: [WasmType]) (d :: [WasmType]) a b. WasmFunctionType c d -> WasmControl a b c d -> WasmControl a b c d
WasmIfTop :: forall (pre :: [WasmType]) (d :: [WasmType]) a b. WasmFunctionType pre d -> WasmControl a b pre d -> WasmControl a b pre d -> WasmControl a b ('I32 ': pre) d
WasmBr :: forall a b (c :: [WasmType]) (d :: [WasmType]). Int -> WasmControl a b c d
WasmFallthrough :: forall a b (c :: [WasmType]) (d :: [WasmType]). WasmControl a b c d
WasmBrTable :: forall b a (c :: [WasmType]) (d :: [WasmType]). b -> BrTableInterval -> [Int] -> Int -> WasmControl a b c d
WasmTailCall :: forall b a (c :: [WasmType]) (d :: [WasmType]). b -> WasmControl a b c d
WasmActions :: forall a b (c :: [WasmType]). a -> WasmControl a b c c
WasmSeq :: forall a b (c :: [WasmType]) (mid :: [WasmType]) (d :: [WasmType]). WasmControl a b c mid -> WasmControl a b mid d -> WasmControl a b c d

(<>) :: forall s e (pre :: [WasmType]) (mid :: [WasmType]) (post :: [WasmType]). WasmControl s e pre mid -> WasmControl s e mid post -> WasmControl s e pre post Source #

pattern WasmIf :: WasmFunctionType pre post -> e -> WasmControl s e pre post -> WasmControl s e pre post -> WasmControl s e pre post Source #

data BrTableInterval Source #

Constructors

BrTableInterval
Fields bti_lo :: Integer bti_count :: Integer

Instances

Instances details

Outputable BrTableInterval Source #
Instance details Defined in GHC.CmmToAsm.Wasm.Types Methods ppr :: BrTableInterval -> SDoc Source #
Show BrTableInterval Source #
Instance details Defined in GHC.CmmToAsm.Wasm.Types Methods showsPrec :: Int -> BrTableInterval -> ShowS # show :: BrTableInterval -> String # showList :: [BrTableInterval] -> ShowS #

inclusiveInterval :: Integer -> Integer -> BrTableInterval Source #

Module : GHC.Wasm.ControlFlow Description : Representation of control-flow portion of the WebAssembly instruction set

data WasmType Source #

WebAssembly type of a WebAssembly value that WebAssembly code could either expect on the evaluation stack or leave on the evaluation stack.

Instances

Instances details

TestEquality WasmTypeTag Source #
Instance details Defined in GHC.CmmToAsm.Wasm.Types Methods testEquality :: forall (a :: WasmType) (b :: WasmType). WasmTypeTag a -> WasmTypeTag b -> Maybe (a :~: b) #

data WasmTypeTag (a :: WasmType) where Source #

Singleton type useful for programming with WasmType at the type level.

Constructors

TagI32 :: WasmTypeTag 'I32
TagI64 :: WasmTypeTag 'I64
TagF32 :: WasmTypeTag 'F32
TagF64 :: WasmTypeTag 'F64

Instances

Instances details

TestEquality WasmTypeTag Source #
Instance details Defined in GHC.CmmToAsm.Wasm.Types Methods testEquality :: forall (a :: WasmType) (b :: WasmType). WasmTypeTag a -> WasmTypeTag b -> Maybe (a :~: b) #
Show (WasmTypeTag t) Source #
Instance details Defined in GHC.CmmToAsm.Wasm.Types Methods showsPrec :: Int -> WasmTypeTag t -> ShowS # show :: WasmTypeTag t -> String # showList :: [WasmTypeTag t] -> ShowS #

data TypeList (a :: [WasmType]) where Source #

List of WebAssembly types used to describe the sequence of WebAssembly values that a block of code may expect on the stack or leave on the stack.

Constructors

TypeListNil :: TypeList ('[] :: [WasmType])
TypeListCons :: forall (t :: WasmType) (ts :: [WasmType]). WasmTypeTag t -> TypeList ts -> TypeList (t ': ts)

data WasmFunctionType (pre :: [WasmType]) (post :: [WasmType]) Source #

The type of a WebAssembly function, loop, block, or conditional. This type says what values the code expects to pop off the stack and what values it promises to push. The WebAssembly standard requires that this type appear explicitly in the code.

Constructors

WasmFunctionType
Fields ft_pops :: TypeList pre ft_pushes :: TypeList post