--
-----------------------------------------------------------------------------
-{-# OPTIONS #-}
--- 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 StgCmmLayout (
mkArgDescr,
emitCall, emitReturn,
import StgCmmUtils
import StgCmmMonad
-import MkZipCfgCmm
+import MkGraph
import SMRep
+import CmmDecl
+import CmmExpr
import CmmUtils
-import Cmm
import CLabel
import StgSyn
import DataCon
import Bitmap
import Data.Bits
-import Maybes
import Constants
import Util
import Data.List
import Outputable
-import FastString ( mkFastString, LitString, sLit )
+import FastString ( mkFastString, FastString, fsLit )
------------------------------------------------------------------------
-- Call and return sequences
; emit (mkMultiAssign regs results) }
}
-emitCall :: Convention -> CmmExpr -> [CmmExpr] -> FCode ()
+emitCall :: (Convention, Convention) -> CmmExpr -> [CmmExpr] -> FCode ()
-- (cgCall fun args) makes a call to the entry-code of 'fun',
-- passing 'args', and returning the results to the current sequel
-emitCall conv fun args
+emitCall convs@(callConv, _) fun args
= do { adjustHpBackwards
; sequel <- getSequel
; updfr_off <- getUpdFrameOff
; emit $ mkComment $ mkFastString ("emitCall: " ++ show sequel)
; case sequel of
- Return _ -> emit (mkForeignJump conv fun args updfr_off)
- AssignTo res_regs _ -> emit (mkCall fun conv res_regs args updfr_off)
+ Return _ -> emit (mkForeignJump callConv fun args updfr_off)
+ AssignTo res_regs _ -> emit (mkCall fun convs res_regs args updfr_off)
}
adjustHpBackwards :: FCode ()
<+> ppr args <+> ppr reps )
| null rest_reps -- Precisely the right number of arguments
- = emitCall Native target args
+ = emitCall (NativeDirectCall, NativeReturn) target args
| otherwise -- Over-saturated call
= ASSERT( arity == length initial_reps )
do { pap_id <- newTemp gcWord
; withSequel (AssignTo [pap_id] True)
- (emitCall Native target fast_args)
+ (emitCall (NativeDirectCall, NativeReturn) target fast_args)
; slow_call (CmmReg (CmmLocal pap_id))
rest_args rest_reps }
where
slow_call fun args reps
= do call <- getCode $ direct_call "slow_call" (mkRtsApFastLabel rts_fun) arity args reps
emit $ mkComment $ mkFastString ("slow_call for " ++ showSDoc (ppr fun) ++
- " with pat " ++ showSDoc (ptext rts_fun))
+ " with pat " ++ showSDoc (ftext rts_fun))
emit (mkAssign nodeReg fun <*> call)
where
(rts_fun, arity) = slowCallPattern reps
-- These cases were found to cover about 99% of all slow calls:
-slowCallPattern :: [LRep] -> (LitString, Arity)
+slowCallPattern :: [LRep] -> (FastString, Arity)
-- Returns the generic apply function and arity
-slowCallPattern (P: P: P: P: P: P: _) = (sLit "stg_ap_pppppp", 6)
-slowCallPattern (P: P: P: P: P: _) = (sLit "stg_ap_ppppp", 5)
-slowCallPattern (P: P: P: P: _) = (sLit "stg_ap_pppp", 4)
-slowCallPattern (P: P: P: V: _) = (sLit "stg_ap_pppv", 4)
-slowCallPattern (P: P: P: _) = (sLit "stg_ap_ppp", 3)
-slowCallPattern (P: P: V: _) = (sLit "stg_ap_ppv", 3)
-slowCallPattern (P: P: _) = (sLit "stg_ap_pp", 2)
-slowCallPattern (P: V: _) = (sLit "stg_ap_pv", 2)
-slowCallPattern (P: _) = (sLit "stg_ap_p", 1)
-slowCallPattern (V: _) = (sLit "stg_ap_v", 1)
-slowCallPattern (N: _) = (sLit "stg_ap_n", 1)
-slowCallPattern (F: _) = (sLit "stg_ap_f", 1)
-slowCallPattern (D: _) = (sLit "stg_ap_d", 1)
-slowCallPattern (L: _) = (sLit "stg_ap_l", 1)
-slowCallPattern [] = (sLit "stg_ap_0", 0)
+slowCallPattern (P: P: P: P: P: P: _) = (fsLit "stg_ap_pppppp", 6)
+slowCallPattern (P: P: P: P: P: _) = (fsLit "stg_ap_ppppp", 5)
+slowCallPattern (P: P: P: P: _) = (fsLit "stg_ap_pppp", 4)
+slowCallPattern (P: P: P: V: _) = (fsLit "stg_ap_pppv", 4)
+slowCallPattern (P: P: P: _) = (fsLit "stg_ap_ppp", 3)
+slowCallPattern (P: P: V: _) = (fsLit "stg_ap_ppv", 3)
+slowCallPattern (P: P: _) = (fsLit "stg_ap_pp", 2)
+slowCallPattern (P: V: _) = (fsLit "stg_ap_pv", 2)
+slowCallPattern (P: _) = (fsLit "stg_ap_p", 1)
+slowCallPattern (V: _) = (fsLit "stg_ap_v", 1)
+slowCallPattern (N: _) = (fsLit "stg_ap_n", 1)
+slowCallPattern (F: _) = (fsLit "stg_ap_f", 1)
+slowCallPattern (D: _) = (fsLit "stg_ap_d", 1)
+slowCallPattern (L: _) = (fsLit "stg_ap_l", 1)
+slowCallPattern [] = (fsLit "stg_ap_0", 0)
-------------------------------------------------------------------------
-------------------------------------------------------------------------
-- bring in ARG_P, ARG_N, etc.
-#include "../includes/StgFun.h"
+#include "../includes/rts/storage/FunTypes.h"
-------------------------
-- argDescrType :: ArgDescr -> StgHalfWord
= case reps of
[] -> Just ARG_NONE -- just void args, probably
[N] -> Just ARG_N
- [P] -> Just ARG_N
+ [P] -> Just ARG_P
[F] -> Just ARG_F
[D] -> Just ARG_D
[L] -> Just ARG_L
= let
small_bits = case bits of
[] -> 0
- [b] -> fromIntegral b
+ [b] -> b
_ -> panic "livenessToAddrMode"
in
return (smallLiveness size small_bits)
-> Id -- name of the closure
-> ClosureInfo -- lots of info abt the closure
-> [NonVoid Id] -- incoming arguments
- -> ((LocalReg, [LocalReg]) -> FCode ()) -- function body
+ -> ((Int, LocalReg, [LocalReg]) -> FCode ()) -- function body
-> FCode ()
emitClosureProcAndInfoTable top_lvl bndr cl_info args body
= do { let lf_info = closureLFInfo cl_info
- -- Bind the binder itself, but only if it's not a top-level
+ -- Bind the binder itself, but only if it's not a top-level
-- binding. We need non-top let-bindings to refer to the
-- top-level binding, which this binding would incorrectly shadow.
; node <- if top_lvl then return $ idToReg (NonVoid bndr)
else bindToReg (NonVoid bndr) lf_info
+ ; let node_points = nodeMustPointToIt lf_info
; arg_regs <- bindArgsToRegs args
- ; emitClosureAndInfoTable cl_info (node : arg_regs) $ body (node, arg_regs)
+ ; let args' = if node_points then (node : arg_regs) else arg_regs
+ conv = if nodeMustPointToIt lf_info then NativeNodeCall
+ else NativeDirectCall
+ (offset, _) = mkCallEntry conv args'
+ ; emitClosureAndInfoTable cl_info conv args' $ body (offset, node, arg_regs)
}
-- Data constructors need closures, but not with all the argument handling
-- needed for functions. The shared part goes here.
-emitClosureAndInfoTable :: ClosureInfo -> [LocalReg] -> FCode () -> FCode ()
-emitClosureAndInfoTable cl_info args body
+emitClosureAndInfoTable ::
+ ClosureInfo -> Convention -> [LocalReg] -> FCode () -> FCode ()
+emitClosureAndInfoTable cl_info conv args body
= do { info <- mkCmmInfo cl_info
; blks <- getCode body
- ; emitProc info (infoLblToEntryLbl info_lbl) args blks
+ ; emitProcWithConvention conv info (infoLblToEntryLbl info_lbl) args blks
}
where
info_lbl = infoTableLabelFromCI cl_info
--- Convert from 'ClosureInfo' to 'CmmInfo'.
+-- Convert from 'ClosureInfo' to 'CmmInfoTable'.
-- Not used for return points. (The 'smRepClosureTypeInt' call would panic.)
-mkCmmInfo :: ClosureInfo -> FCode CmmInfo
+mkCmmInfo :: ClosureInfo -> FCode CmmInfoTable
mkCmmInfo cl_info
= do { info <- closureTypeInfo cl_info k_with_con_name return
; prof <- if opt_SccProfilingOn then
ad_lit <- mkStringCLit (closureValDescr cl_info)
return $ ProfilingInfo fd_lit ad_lit
else return $ ProfilingInfo (mkIntCLit 0) (mkIntCLit 0)
- ; return (CmmInfo gc_target Nothing
- (CmmInfoTable (isStaticClosure cl_info) prof cl_type info)) }
+ ; return (CmmInfoTable (isStaticClosure cl_info) prof cl_type info) }
where
k_with_con_name con_info con info_lbl =
do cstr <- mkByteStringCLit $ dataConIdentity con
return $ con_info $ makeRelativeRefTo info_lbl cstr
cl_type = smRepClosureTypeInt (closureSMRep cl_info)
- -- The gc_target is to inform the CPS pass when it inserts a stack check.
- -- Since that pass isn't used yet we'll punt for now.
- -- When the CPS pass is fully integrated, this should
- -- be replaced by the label that any heap check jumped to,
- -- so that branch can be shared by both the heap (from codeGen)
- -- and stack checks (from the CPS pass).
- -- JD: Actually, we've decided to go a different route here:
- -- the code generator is now responsible for producing the
- -- stack limit check explicitly, so this field is now obsolete.
- gc_target = Nothing
-
-----------------------------------------------------------------------------
--
-- Info table offsets
projects / ghc-hetmet.git / blobdiff