module Llvm.Types where
#include "HsVersions.h"
-#include "ghcconfig.h"
import Data.Char
import Numeric
--
-- | A global mutable variable. Maybe defined or external
-type LMGlobal = (LlvmVar, Maybe LlvmStatic)
+type LMGlobal = (LlvmVar, Maybe LlvmStatic)
-- | A String in LLVM
-type LMString = FastString
+type LMString = FastString
+-- | A type alias
+type LlvmAlias = (LMString, LlvmType)
--- | Llvm Types.
+-- | Llvm Types
data LlvmType
- = LMInt Int -- ^ An integer with a given width in bits.
- | LMFloat -- ^ 32 bit floating point
- | LMDouble -- ^ 64 bit floating point
- | LMFloat80 -- ^ 80 bit (x86 only) floating point
- | LMFloat128 -- ^ 128 bit floating point
- | LMPointer LlvmType -- ^ A pointer to a 'LlvmType'
- | LMArray Int LlvmType -- ^ An array of 'LlvmType'
- | LMLabel -- ^ A 'LlvmVar' can represent a label (address)
- | LMVoid -- ^ Void type
- | LMStruct [LlvmType] -- ^ Structure type
- | LMAlias LMString LlvmType -- ^ A type alias
+ = LMInt Int -- ^ An integer with a given width in bits.
+ | LMFloat -- ^ 32 bit floating point
+ | LMDouble -- ^ 64 bit floating point
+ | LMFloat80 -- ^ 80 bit (x86 only) floating point
+ | LMFloat128 -- ^ 128 bit floating point
+ | LMPointer LlvmType -- ^ A pointer to a 'LlvmType'
+ | LMArray Int LlvmType -- ^ An array of 'LlvmType'
+ | LMLabel -- ^ A 'LlvmVar' can represent a label (address)
+ | LMVoid -- ^ Void type
+ | LMStruct [LlvmType] -- ^ Structure type
+ | LMAlias LlvmAlias -- ^ A type alias
-- | Function type, used to create pointers to functions
| LMFunction LlvmFunctionDecl
show (LMArray nr tp ) = "[" ++ show nr ++ " x " ++ show tp ++ "]"
show (LMLabel ) = "label"
show (LMVoid ) = "void"
- show (LMStruct tys ) = "{" ++ (commaCat tys) ++ "}"
+ show (LMStruct tys ) = "<{" ++ (commaCat tys) ++ "}>"
show (LMFunction (LlvmFunctionDecl _ _ _ r varg p _))
= let args = ((drop 1).concat) $ -- use drop since it can handle empty lists
_otherwise -> ""
in show r ++ " (" ++ args ++ varg' ++ ")"
- show (LMAlias s _ ) = "%" ++ unpackFS s
+ show (LMAlias (s,_)) = "%" ++ unpackFS s
--- | An LLVM section defenition. If Nothing then let LLVM decide the section
+-- | An LLVM section definition. If Nothing then let LLVM decide the section
type LMSection = Maybe LMString
type LMAlign = Maybe Int
type LMConst = Bool -- ^ is a variable constant or not
= LMIntLit Integer LlvmType
-- | Floating point literal
| LMFloatLit Double LlvmType
+ -- | Literal NULL, only applicable to pointer types
+ | LMNullLit LlvmType
+ -- | Undefined value, random bit pattern. Useful for optimisations.
+ | LMUndefLit LlvmType
deriving (Eq)
instance Show LlvmLit where
show (LMStaticStruc d t)
= let struc = case d of
- [] -> "{}"
- ts -> "{" ++ show (head ts) ++
- concat (map (\x -> "," ++ show x) (tail ts)) ++ "}"
+ [] -> "<{}>"
+ ts -> "<{" ++ show (head ts) ++
+ concat (map (\x -> "," ++ show x) (tail ts)) ++ "}>"
in show t ++ " " ++ struc
show (LMStaticPointer v) = show v
show (LMAdd s1 s2)
= let ty1 = getStatType s1
+ op = if isFloat ty1 then " fadd (" else " add ("
in if ty1 == getStatType s2
- then show ty1 ++ " add (" ++ show s1 ++ "," ++ show s2 ++ ")"
+ then show ty1 ++ op ++ show s1 ++ "," ++ show s2 ++ ")"
else error $ "LMAdd with different types! s1: "
++ show s1 ++ ", s2: " ++ show s2
show (LMSub s1 s2)
= let ty1 = getStatType s1
+ op = if isFloat ty1 then " fsub (" else " sub ("
in if ty1 == getStatType s2
- then show ty1 ++ " sub (" ++ show s1 ++ "," ++ show s2 ++ ")"
+ then show ty1 ++ op ++ show s1 ++ "," ++ show s2 ++ ")"
else error $ "LMSub with different types! s1: "
++ show s1 ++ ", s2: " ++ show s2
-- in a plain textual representation (e.g. @x@, @y@ or @42@).
getPlainName :: LlvmVar -> String
getPlainName (LMGlobalVar x _ _ _ _ _) = unpackFS x
-getPlainName (LMLocalVar x _ ) = show x
+getPlainName (LMLocalVar x LMLabel ) = show x
+getPlainName (LMLocalVar x _ ) = "l" ++ show x
getPlainName (LMNLocalVar x _ ) = unpackFS x
getPlainName (LMLitVar x ) = getLit x
getLit (LMFloatLit r LMFloat ) = fToStr $ realToFrac r
getLit (LMFloatLit r LMDouble) = dToStr r
getLit f@(LMFloatLit _ _) = error $ "Can't print this float literal!" ++ show f
+getLit (LMNullLit _) = "null"
+getLit (LMUndefLit _) = "undef"
-- | Return the 'LlvmType' of the 'LlvmVar'
getVarType :: LlvmVar -> LlvmType
getLitType :: LlvmLit -> LlvmType
getLitType (LMIntLit _ t) = t
getLitType (LMFloatLit _ t) = t
+getLitType (LMNullLit t) = t
+getLitType (LMUndefLit t) = t
-- | Return the 'LlvmType' of the 'LlvmStatic'
getStatType :: LlvmStatic -> LlvmType
llvmWidthInBits LMVoid = 0
llvmWidthInBits (LMStruct tys) = sum $ map llvmWidthInBits tys
llvmWidthInBits (LMFunction _) = 0
-llvmWidthInBits (LMAlias _ t) = llvmWidthInBits t
+llvmWidthInBits (LMAlias (_,t)) = llvmWidthInBits t
-- -----------------------------------------------------------------------------
| LM_MO_Mul -- ^ multiply ..
| LM_MO_UDiv -- ^ unsigned integer or vector division.
| LM_MO_SDiv -- ^ signed integer ..
- | LM_MO_FDiv -- ^ floating point ..
| LM_MO_URem -- ^ unsigned integer or vector remainder (mod)
| LM_MO_SRem -- ^ signed ...
- | LM_MO_FRem -- ^ floating point ...
+
+ | LM_MO_FAdd -- ^ add two floating point or vector values.
+ | LM_MO_FSub -- ^ subtract two ...
+ | LM_MO_FMul -- ^ multiply ...
+ | LM_MO_FDiv -- ^ divide ...
+ | LM_MO_FRem -- ^ remainder ...
-- | Left shift
| LM_MO_Shl
show LM_MO_Mul = "mul"
show LM_MO_UDiv = "udiv"
show LM_MO_SDiv = "sdiv"
- show LM_MO_FDiv = "fdiv"
show LM_MO_URem = "urem"
show LM_MO_SRem = "srem"
+ show LM_MO_FAdd = "fadd"
+ show LM_MO_FSub = "fsub"
+ show LM_MO_FMul = "fmul"
+ show LM_MO_FDiv = "fdiv"
show LM_MO_FRem = "frem"
show LM_MO_Shl = "shl"
show LM_MO_LShr = "lshr"