RegAlloc.Graph.ArchX86

ghc-7.8.3: The GHC API

Safe Haskell | None
Language | Haskell98

RegAlloc.Graph.ArchX86

Description

A description of the register set of the X86.

This isn't used directly in GHC proper.

See RegArchBase.hs for the reference. See MachRegs.hs for the actual trivColorable function used in GHC.

Synopsis

- classOfReg :: Reg -> RegClass
- regsOfClass :: RegClass -> UniqSet Reg
- regName :: Reg -> Maybe String
- regAlias :: Reg -> UniqSet Reg
- worst :: Int -> RegClass -> RegClass -> Int
- squeese :: RegClass -> [(Int, RegClass)] -> Int

# Documentation

classOfReg :: Reg -> RegClass Source

Determine the class of a register

regsOfClass :: RegClass -> UniqSet Reg Source

Determine all the regs that make up a certain class.

regName :: Reg -> Maybe String Source

Determine the common name of a reg returns Nothing if this reg is not part of the machine.

regAlias :: Reg -> UniqSet Reg Source

Which regs alias what other regs.

worst :: Int -> RegClass -> RegClass -> Int Source

Optimised versions of RegColorBase.{worst, squeese} specific to x86

squeese :: RegClass -> [(Int, RegClass)] -> Int Source