fPair,
-- allocatable
- freeReg,
allocatableRegs,
- globalRegMaybe,
get_GlobalReg_reg_or_addr,
-- args
where
+import SPARC.RegPlate
import Reg
import RegClass
import Size
import Cmm
+import PprCmm
import CgUtils ( get_GlobalReg_addr )
import Unique
fPair (VirtualRegD u)
= Just (VirtualRegHi u)
-fPair _
- = trace ("MachInstrs.fPair: can't get high half of supposed double reg ")
+fPair reg
+ = trace ("MachInstrs.fPair: can't get high half of supposed double reg " ++ showPpr reg)
Nothing
+
+-- allocatableRegs is allMachRegNos with the fixed-use regs removed.
+-- i.e., these are the regs for which we are prepared to allow the
+-- register allocator to attempt to map VRegs to.
+allocatableRegs :: [RegNo]
+allocatableRegs
+ = let isFree i = isFastTrue (freeReg i)
+ in filter isFree allMachRegNos
+
+
+
+-- We map STG registers onto appropriate CmmExprs. Either they map
+-- to real machine registers or stored as offsets from BaseReg. Given
+-- a GlobalReg, get_GlobalReg_reg_or_addr produces either the real
+-- register it is in, on this platform, or a CmmExpr denoting the
+-- address in the register table holding it.
+-- (See also get_GlobalReg_addr in CgUtils.)
+
+get_GlobalReg_reg_or_addr :: GlobalReg -> Either Reg CmmExpr
+get_GlobalReg_reg_or_addr mid
+ = case globalRegMaybe mid of
+ Just rr -> Left rr
+ Nothing -> Right (get_GlobalReg_addr mid)
+
+
+-- | The registers to place arguments for function calls,
+-- for some number of arguments.
+--
+argRegs :: RegNo -> [Reg]
+argRegs r
+ = case r of
+ 0 -> []
+ 1 -> map (RealReg . oReg) [0]
+ 2 -> map (RealReg . oReg) [0,1]
+ 3 -> map (RealReg . oReg) [0,1,2]
+ 4 -> map (RealReg . oReg) [0,1,2,3]
+ 5 -> map (RealReg . oReg) [0,1,2,3,4]
+ 6 -> map (RealReg . oReg) [0,1,2,3,4,5]
+ _ -> panic "MachRegs.argRegs(sparc): don't know about >6 arguments!"
+
+
+-- | All all the regs that could possibly be returned by argRegs
+--
+allArgRegs :: [Reg]
+allArgRegs
+ = map RealReg [oReg i | i <- [0..5]]
+
+
+-- These are the regs that we cannot assume stay alive over a C call.
+-- TODO: Why can we assume that o6 isn't clobbered? -- BL 2009/02
+--
+callClobberedRegs :: [Reg]
+callClobberedRegs
+ = map RealReg
+ ( oReg 7 :
+ [oReg i | i <- [0..5]] ++
+ [gReg i | i <- [1..7]] ++
+ [fReg i | i <- [0..31]] )
+
+
+
+-- | Make a virtual reg with this size.
+mkVReg :: Unique -> Size -> Reg
+mkVReg u size
+ | not (isFloatSize size)
+ = VirtualRegI u
+
+ | otherwise
+ = case size of
+ FF32 -> VirtualRegF u
+ FF64 -> VirtualRegD u
+ _ -> panic "mkVReg"
+
+
+regDotColor :: Reg -> SDoc
+regDotColor reg
+ = case regClass reg of
+ RcInteger -> text "blue"
+ RcFloat -> text "red"
+ RcDouble -> text "green"
+
+
+
+
+
+-- Hard coded freeReg / globalRegMaybe -----------------------------------------
+-- This isn't being used at the moment because we're generating
+-- these functions from the information in includes/MachRegs.hs via RegPlate.hs
+
-- | Check whether a machine register is free for allocation.
-- This needs to match the info in includes/MachRegs.h otherwise modules
-- compiled with the NCG won't be compatible with via-C ones.
--
+{-
freeReg :: RegNo -> FastBool
freeReg regno
= case regno of
-- regs not matched above are allocable.
_ -> fastBool True
-
--- allocatableRegs is allMachRegNos with the fixed-use regs removed.
--- i.e., these are the regs for which we are prepared to allow the
--- register allocator to attempt to map VRegs to.
-allocatableRegs :: [RegNo]
-allocatableRegs
- = let isFree i = isFastTrue (freeReg i)
- in filter isFree allMachRegNos
-
+-}
-- | Returns Just the real register that a global register is stored in.
-- Returns Nothing if the global has no real register, and is stored
-- in the in-memory register table instead.
--
+{-
globalRegMaybe :: GlobalReg -> Maybe Reg
globalRegMaybe gg
= case gg of
BaseReg -> Just (RealReg 25) -- %i1
_ -> Nothing
-
-
--- We map STG registers onto appropriate CmmExprs. Either they map
--- to real machine registers or stored as offsets from BaseReg. Given
--- a GlobalReg, get_GlobalReg_reg_or_addr produces either the real
--- register it is in, on this platform, or a CmmExpr denoting the
--- address in the register table holding it.
--- (See also get_GlobalReg_addr in CgUtils.)
-
-get_GlobalReg_reg_or_addr :: GlobalReg -> Either Reg CmmExpr
-get_GlobalReg_reg_or_addr mid
- = case globalRegMaybe mid of
- Just rr -> Left rr
- Nothing -> Right (get_GlobalReg_addr mid)
-
-
--- | The registers to place arguments for function calls,
--- for some number of arguments.
---
-argRegs :: RegNo -> [Reg]
-argRegs r
- = case r of
- 0 -> []
- 1 -> map (RealReg . oReg) [0]
- 2 -> map (RealReg . oReg) [0,1]
- 3 -> map (RealReg . oReg) [0,1,2]
- 4 -> map (RealReg . oReg) [0,1,2,3]
- 5 -> map (RealReg . oReg) [0,1,2,3,4]
- 6 -> map (RealReg . oReg) [0,1,2,3,4,5]
- _ -> panic "MachRegs.argRegs(sparc): don't know about >6 arguments!"
-
-
--- | All all the regs that could possibly be returned by argRegs
---
-allArgRegs :: [Reg]
-allArgRegs
- = map RealReg [oReg i | i <- [0..5]]
-
-
--- These are the regs that we cannot assume stay alive over a C call.
--- TODO: Why can we assume that o6 isn't clobbered? -- BL 2009/02
---
-callClobberedRegs :: [Reg]
-callClobberedRegs
- = map RealReg
- ( oReg 7 :
- [oReg i | i <- [0..5]] ++
- [gReg i | i <- [1..7]] ++
- [fReg i | i <- [0..31]] )
-
-
-
--- | Make a virtual reg with this size.
-mkVReg :: Unique -> Size -> Reg
-mkVReg u size
- | not (isFloatSize size)
- = VirtualRegI u
-
- | otherwise
- = case size of
- FF32 -> VirtualRegF u
- FF64 -> VirtualRegD u
- _ -> panic "mkVReg"
-
-
-regDotColor :: Reg -> SDoc
-regDotColor reg
- = case regClass reg of
- RcInteger -> text "blue"
- RcFloat -> text "red"
- RcDouble -> text "green"
+-}
projects / ghc-hetmet.git / blobdiff