ghc-7.0.3: The GHC API

SPARC.CodeGen.Base

Synopsis

- type InstrBlock = OrdList Instr
- data CondCode = CondCode Bool Cond InstrBlock
- data ChildCode64 = ChildCode64 InstrBlock Reg
- data Amode = Amode AddrMode InstrBlock
- data Register
  - = Fixed Size Reg InstrBlock
  - | Any Size (Reg -> InstrBlock)
- setSizeOfRegister :: Register -> Size -> Register
- getRegisterReg :: CmmReg -> Reg
- mangleIndexTree :: CmmExpr -> CmmExpr

# Documentation

type InstrBlock = OrdList Instr

`InstrBlock`s are the insn sequences generated by the insn selectors. They are really trees of insns to facilitate fast appending, where a left-to-right traversal yields the insns in the correct order.

data CondCode

Condition codes passed up the tree.

Constructors

CondCode Bool Cond InstrBlock |

data ChildCode64

a.k.a Register64 Reg is the lower 32-bit temporary which contains the result. Use getHiVRegFromLo to find the other VRegUnique.

Rules of this simplified insn selection game are therefore that the returned Reg may be modified

Constructors

ChildCode64 InstrBlock Reg |

data Amode

Holds code that references a memory address.

Constructors

Amode AddrMode InstrBlock |

data Register

Code to produce a result into a register. If the result must go in a specific register, it comes out as Fixed. Otherwise, the parent can decide which register to put it in.

Constructors

Fixed Size Reg InstrBlock |
Any Size (Reg -> InstrBlock) |

setSizeOfRegister :: Register -> Size -> Register

Change the size field in a Register.

getRegisterReg :: CmmReg -> Reg

Grab the Reg for a CmmReg

mangleIndexTree :: CmmExpr -> CmmExpr