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|
-----------------------------------------------------------------------------
--
-- Code generation for coverage
--
-- (c) Galois Connections, Inc. 2006
--
-----------------------------------------------------------------------------
module GHC.StgToCmm.Hpc ( initHpc, mkTickBox ) where
import GHC.Prelude
import GHC.StgToCmm.Monad
import GHC.Platform
import GHC.Cmm.Graph
import GHC.Cmm.Expr
import GHC.Cmm.CLabel
import GHC.Types.Module
import GHC.Cmm.Utils
import GHC.StgToCmm.Utils
import GHC.Driver.Types
import GHC.Driver.Session
import Control.Monad
mkTickBox :: Platform -> Module -> Int -> CmmAGraph
mkTickBox platform mod n
= mkStore tick_box (CmmMachOp (MO_Add W64)
[ CmmLoad tick_box b64
, CmmLit (CmmInt 1 W64)
])
where
tick_box = cmmIndex platform W64
(CmmLit $ CmmLabel $ mkHpcTicksLabel $ mod)
n
-- | Emit top-level tables for HPC and return code to initialise
initHpc :: Module -> HpcInfo -> FCode ()
initHpc _ (NoHpcInfo {})
= return ()
initHpc this_mod (HpcInfo tickCount _hashNo)
= do dflags <- getDynFlags
when (gopt Opt_Hpc dflags) $
emitDataLits (mkHpcTicksLabel this_mod)
[ (CmmInt 0 W64)
| _ <- take tickCount [0 :: Int ..]
]
|
