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GHC 9.14.1 · lts/ghc-9.14.x · b2f3bfd · 2026-10-11

Moduleghc-9.14.1GHC2021

GHC.StgToJS.Regs

3 types
19 values

Packageghc-9.14.1
Exports22
LanguageGHC2021
LicenceBSD-3-Clause
SourceRegs.hs

datadata StgReg

General purpose "registers"

The JS backend arbitrarily supports 128 registers

R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R39 R40 R41 R42 R43 R44 R45 R46 R47 R48 R49 R50 R51 R52 R53 R54 R55 R56 R57 R58 R59 R60 R61 R62 R63 R64 R65 R66 R67 R68 R69 R70 R71 R72 R73 R74 R75 R76 R77 R78 R79 R80 R81 R82 R83 R84 R85 R86 R87 R88 R89 R90 R91 R92 R93 R94 R95 R96 R97 R98 R99 R100 R101 R102 R103 R104 R105 R106 R107 R108 R109 R110 R111 R112 R113 R114 R115 R116 R117 R118 R119 R120 R121 R122 R123 R124 R125 R126 R127 R128

Instances7Bounded, Enum, Eq, Ord, Show, Ix, …

Bounded StgRegDefined in ghc-9.14.1 · GHC.StgToJS.Regs
Enum StgRegDefined in ghc-9.14.1 · GHC.StgToJS.Regs
Eq StgRegDefined in ghc-9.14.1 · GHC.StgToJS.Regs
Ord StgRegDefined in ghc-9.14.1 · GHC.StgToJS.Regs
Show StgRegDefined in ghc-9.14.1 · GHC.StgToJS.Regs
Ix StgRegDefined in ghc-9.14.1 · GHC.StgToJS.Regs
ToJExpr StgRegDefined in ghc-9.14.1 · GHC.StgToJS.Regs

datadata Special

Stack registers

Instances3Eq, Show, ToJExpr

Eq SpecialDefined in ghc-9.14.1 · GHC.StgToJS.Regs
Show SpecialDefined in ghc-9.14.1 · GHC.StgToJS.Regs
ToJExpr SpecialDefined in ghc-9.14.1 · GHC.StgToJS.Regs

valuesp :: JStgExpr

valuestack :: JStgExpr

valuer1 :: JStgExpr

valuer2 :: JStgExpr

valuer3 :: JStgExpr

valuer4 :: JStgExpr

valueregsFromR1 :: [StgReg]

List of registers, starting from R1

valueregsFromR2 :: [StgReg]

List of registers, starting from R2

valuejsRegsFromR1 :: [JStgExpr]

List of registers, starting from R1 as JStgExpr

valuejsRegsFromR2 :: [JStgExpr]

List of registers, starting from R2 as JExpr

datadata StgRet

Return registers

Extra results from foreign calls can be stored here (while first result is directly returned)

Ret1 Ret2 Ret3 Ret4 Ret5 Ret6 Ret7 Ret8 Ret9 Ret10

Instances7Bounded, Enum, Eq, Ord, Show, Ix, …

Bounded StgRetDefined in ghc-9.14.1 · GHC.StgToJS.Regs
Enum StgRetDefined in ghc-9.14.1 · GHC.StgToJS.Regs
Eq StgRetDefined in ghc-9.14.1 · GHC.StgToJS.Regs
Ord StgRetDefined in ghc-9.14.1 · GHC.StgToJS.Regs
Show StgRetDefined in ghc-9.14.1 · GHC.StgToJS.Regs
Ix StgRetDefined in ghc-9.14.1 · GHC.StgToJS.Regs
ToJExpr StgRetDefined in ghc-9.14.1 · GHC.StgToJS.Regs

valuejsRegToInt :: StgReg -> Int

valueintToJSReg :: Int -> StgReg

valuejsReg :: Int -> JStgExpr

valuemaxReg :: Int

valueminReg :: Int

valuelowRegs :: [Ident]

valueretRegs :: [Ident]

valueregister :: StgReg -> JStgExpr

Given a register, return the JS syntax object representing that register

valueforeignRegister :: StgRet -> JStgExpr

Given a register, return the JS syntax object representing that register