-- | The RegM Monad
-instance Monad RegM where
+instance Monad (RegM freeRegs) where
m >>= k = RegM $ \s -> case unReg m s of { (# s, a #) -> unReg (k a) s }
return a = RegM $ \s -> (# s, a #)
-> RegMap Loc
-> StackMap
-> UniqSupply
- -> RegM a
+ -> RegM FreeRegs a
-> (BlockAssignment, StackMap, RegAllocStats, a)
runR block_assig freeregs assig stack us thing =
-- | Make register allocator stats from its final state.
-makeRAStats :: RA_State -> RegAllocStats
+makeRAStats :: RA_State FreeRegs -> RegAllocStats
makeRAStats state
= RegAllocStats
{ ra_spillInstrs = binSpillReasons (ra_spills state) }
spillR :: Instruction instr
- => Reg -> Unique -> RegM (instr, Int)
+ => Reg -> Unique -> RegM FreeRegs (instr, Int)
spillR reg temp = RegM $ \ s@RA_State{ra_delta=delta, ra_stack=stack} ->
let (stack',slot) = getStackSlotFor stack temp
loadR :: Instruction instr
- => Reg -> Int -> RegM instr
+ => Reg -> Int -> RegM FreeRegs instr
loadR reg slot = RegM $ \ s@RA_State{ra_delta=delta} ->
(# s, mkLoadInstr reg delta slot #)
-getFreeRegsR :: RegM FreeRegs
+getFreeRegsR :: RegM FreeRegs FreeRegs
getFreeRegsR = RegM $ \ s@RA_State{ra_freeregs = freeregs} ->
(# s, freeregs #)
-setFreeRegsR :: FreeRegs -> RegM ()
+setFreeRegsR :: FreeRegs -> RegM FreeRegs ()
setFreeRegsR regs = RegM $ \ s ->
(# s{ra_freeregs = regs}, () #)
-getAssigR :: RegM (RegMap Loc)
+getAssigR :: RegM FreeRegs (RegMap Loc)
getAssigR = RegM $ \ s@RA_State{ra_assig = assig} ->
(# s, assig #)
-setAssigR :: RegMap Loc -> RegM ()
+setAssigR :: RegMap Loc -> RegM FreeRegs ()
setAssigR assig = RegM $ \ s ->
(# s{ra_assig=assig}, () #)
-getBlockAssigR :: RegM BlockAssignment
+getBlockAssigR :: RegM FreeRegs BlockAssignment
getBlockAssigR = RegM $ \ s@RA_State{ra_blockassig = assig} ->
(# s, assig #)
-setBlockAssigR :: BlockAssignment -> RegM ()
+setBlockAssigR :: BlockAssignment -> RegM FreeRegs ()
setBlockAssigR assig = RegM $ \ s ->
(# s{ra_blockassig = assig}, () #)
-setDeltaR :: Int -> RegM ()
+setDeltaR :: Int -> RegM FreeRegs ()
setDeltaR n = RegM $ \ s ->
(# s{ra_delta = n}, () #)
-getDeltaR :: RegM Int
+getDeltaR :: RegM FreeRegs Int
getDeltaR = RegM $ \s -> (# s, ra_delta s #)
-getUniqueR :: RegM Unique
+getUniqueR :: RegM FreeRegs Unique
getUniqueR = RegM $ \s ->
case takeUniqFromSupply (ra_us s) of
(uniq, us) -> (# s{ra_us = us}, uniq #)
-- | Record that a spill instruction was inserted, for profiling.
-recordSpill :: SpillReason -> RegM ()
+recordSpill :: SpillReason -> RegM FreeRegs ()
recordSpill spill
= RegM $ \s -> (# s { ra_spills = spill : ra_spills s}, () #)