-- -----------------------------------------------------------------------------
\begin{code}
-{-# OPTIONS -w #-}
--- The above warning supression flag is a temporary kludge.
--- While working on this module you are encouraged to remove it and fix
--- any warnings in the module. See
--- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
--- for details
-
module AsmCodeGen ( nativeCodeGen ) where
#include "HsVersions.h"
#elif i386_TARGET_ARCH || x86_64_TARGET_ARCH
import X86.CodeGen
import X86.Regs
-import X86.RegInfo
import X86.Instr
import X86.Ppr
#elif sparc_TARGET_ARCH
import SPARC.CodeGen
+import SPARC.CodeGen.Expand
import SPARC.Regs
import SPARC.Instr
import SPARC.Ppr
import qualified GraphColor as Color
import qualified RegAlloc.Graph.Main as Color
import qualified RegAlloc.Graph.Stats as Color
-import qualified RegAlloc.Graph.Coalesce as Color
import qualified RegAlloc.Graph.TrivColorable as Color
-import qualified SPARC.CodeGen.Expand as SPARC
-
import TargetReg
import Platform
import Instruction
import PIC
import Reg
-import RegClass
import NCGMonad
import BlockId
import CmmOpt ( cmmMiniInline, cmmMachOpFold )
import PprCmm
import CLabel
-import State
import UniqFM
import Unique ( Unique, getUnique )
import UniqSupply
import DynFlags
-#if powerpc_TARGET_ARCH
-import StaticFlags ( opt_Static, opt_PIC )
-#endif
+import StaticFlags
import Util
-import Config ( cProjectVersion )
-import Module
+import Config
import Digraph
import qualified Pretty
import FastString
import UniqSet
import ErrUtils
+import Module
-- DEBUGGING ONLY
--import OrdList
import Data.List
-import Data.Int
-import Data.Word
-import Data.Bits
import Data.Maybe
-import GHC.Exts
import Control.Monad
import System.IO
+import Distribution.System
{-
The native-code generator has machine-independent and
-- | Do native code generation on all these cmms.
--
-cmmNativeGens dflags h us [] impAcc profAcc count
+cmmNativeGens :: DynFlags
+ -> BufHandle
+ -> UniqSupply
+ -> [RawCmmTop]
+ -> [[CLabel]]
+ -> [ ([NatCmmTop Instr],
+ Maybe [Color.RegAllocStats Instr],
+ Maybe [Linear.RegAllocStats]) ]
+ -> Int
+ -> IO ( [[CLabel]],
+ [([NatCmmTop Instr],
+ Maybe [Color.RegAllocStats Instr],
+ Maybe [Linear.RegAllocStats])] )
+
+cmmNativeGens _ _ _ [] impAcc profAcc _
= return (reverse impAcc, reverse profAcc)
cmmNativeGens dflags h us (cmm : cmms) impAcc profAcc count
#if sparc_TARGET_ARCH
let expanded =
{-# SCC "sparc_expand" #-}
- map SPARC.expandTop kludged
+ map expandTop kludged
dumpIfSet_dyn dflags
Opt_D_dump_asm_expanded "Synthetic instructions expanded"
#if i386_TARGET_ARCH
x86fp_kludge :: NatCmmTop Instr -> NatCmmTop Instr
x86fp_kludge top@(CmmData _ _) = top
-x86fp_kludge top@(CmmProc info lbl params (ListGraph code)) =
+x86fp_kludge (CmmProc info lbl params (ListGraph code)) =
CmmProc info lbl params (ListGraph $ i386_insert_ffrees code)
#endif
[one] -> [getUnique one]
_many -> []
+mkNode :: (Instruction t)
+ => GenBasicBlock t
+ -> (GenBasicBlock t, Unique, [Unique])
mkNode block@(BasicBlock id instrs) = (block, getUnique id, getOutEdges instrs)
+seqBlocks :: (Eq t) => [(GenBasicBlock t1, t, [t])] -> [GenBasicBlock t1]
seqBlocks [] = []
seqBlocks ((block,_,[]) : rest)
= block : seqBlocks rest
-- fallthroughs within a loop.
seqBlocks _ = panic "AsmCodegen:seqBlocks"
-reorder id accum [] = (False, reverse accum)
+reorder :: (Eq a) => a -> [(t, a, t1)] -> [(t, a, t1)] -> (Bool, [(t, a, t1)])
+reorder _ accum [] = (False, reverse accum)
reorder id accum (b@(block,id',out) : rest)
| id == id' = (True, (block,id,out) : reverse accum ++ rest)
| otherwise = reorder id (b:accum) rest
handleBlock addr (BasicBlock id instrs)
= BasicBlock id (zipWith makeFar [addr..] instrs)
- makeFar addr (BCC ALWAYS tgt) = BCC ALWAYS tgt
+ makeFar _ (BCC ALWAYS tgt) = BCC ALWAYS tgt
makeFar addr (BCC cond tgt)
| abs (addr - targetAddr) >= nearLimit
= BCCFAR cond tgt
| otherwise
= BCC cond tgt
where Just targetAddr = lookupUFM blockAddressMap tgt
- makeFar addr other = other
+ makeFar _ other = other
nearLimit = 7000 -- 8192 instructions are allowed; let's keep some
-- distance, as we have a few pseudo-insns that are
(tops', mappings) = mapAndUnzip build_mapping tops
mapping = foldr plusUFM emptyUFM mappings
+build_mapping :: GenCmmTop d t (ListGraph Instr)
+ -> (GenCmmTop d t (ListGraph Instr), UniqFM JumpDest)
build_mapping top@(CmmData _ _) = (top, emptyUFM)
build_mapping (CmmProc info lbl params (ListGraph []))
= (CmmProc info lbl params (ListGraph []), emptyUFM)
mapping = foldl add emptyUFM shortcut_blocks
add ufm (id,dest) = addToUFM ufm id dest
+apply_mapping :: UniqFM JumpDest
+ -> GenCmmTop CmmStatic h (ListGraph Instr)
+ -> GenCmmTop CmmStatic h (ListGraph Instr)
apply_mapping ufm (CmmData sec statics)
= CmmData sec (map (shortcutStatic (lookupUFM ufm)) statics)
-- we need to get the jump tables, so apply the mapping to the entries
CmmOptM g' -> g' (imports', dflags)
addImportCmmOpt :: CLabel -> CmmOptM ()
-addImportCmmOpt lbl = CmmOptM $ \(imports, dflags) -> (# (), lbl:imports #)
+addImportCmmOpt lbl = CmmOptM $ \(imports, _dflags) -> (# (), lbl:imports #)
getDynFlagsCmmOpt :: CmmOptM DynFlags
getDynFlagsCmmOpt = CmmOptM $ \(imports, dflags) -> (# dflags, imports #)
stmts' <- mapM cmmStmtConFold stmts
return $ BasicBlock id stmts'
+cmmStmtConFold :: CmmStmt -> CmmOptM CmmStmt
cmmStmtConFold stmt
= case stmt of
CmmAssign reg src
CmmComment (mkFastString ("deleted: " ++
showSDoc (pprStmt stmt)))
- CmmLit (CmmInt n _) -> CmmBranch dest
- other -> CmmCondBranch test' dest
+ CmmLit (CmmInt _ _) -> CmmBranch dest
+ _other -> CmmCondBranch test' dest
CmmSwitch expr ids
-> do expr' <- cmmExprConFold DataReference expr
-> return other
+cmmExprConFold :: ReferenceKind -> CmmExpr -> CmmOptM CmmExpr
cmmExprConFold referenceKind expr
= case expr of
CmmLoad addr rep
(CmmLit $ CmmInt (fromIntegral off) wordWidth)
]
-#if powerpc_TARGET_ARCH
- -- On powerpc (non-PIC), it's easier to jump directly to a label than
- -- to use the register table, so we replace these registers
- -- with the corresponding labels:
+ -- On powerpc (non-PIC), it's easier to jump directly to a label than
+ -- to use the register table, so we replace these registers
+ -- with the corresponding labels:
CmmReg (CmmGlobal EagerBlackholeInfo)
- | not opt_PIC
+ | cTargetArch == PPC && not opt_PIC
-> cmmExprConFold referenceKind $
CmmLit (CmmLabel (mkCmmCodeLabel rtsPackageId (fsLit "__stg_EAGER_BLACKHOLE_info")))
CmmReg (CmmGlobal GCEnter1)
- | not opt_PIC
+ | cTargetArch == PPC && not opt_PIC
-> cmmExprConFold referenceKind $
CmmLit (CmmLabel (mkCmmCodeLabel rtsPackageId (fsLit "__stg_gc_enter_1")))
CmmReg (CmmGlobal GCFun)
- | not opt_PIC
+ | cTargetArch == PPC && not opt_PIC
-> cmmExprConFold referenceKind $
CmmLit (CmmLabel (mkCmmCodeLabel rtsPackageId (fsLit "__stg_gc_fun")))
-#endif
other
-> return other