writeCs :: DynFlags -> Handle -> [Cmm] -> IO ()
writeCs dflags handle cmms
- = printForUser handle alwaysQualify (pprCs dflags cmms)
- -- ToDo: should be printForC
+ = printForC handle (pprCs dflags cmms)
-- --------------------------------------------------------------------------
-- Now do some real work
-> ptext SLIT("ASSIGN_Word64") <>
parens (mkP_ <> pprExpr1 dest <> comma <> pprExpr src) <> semi
+ | rep == F64 && wordRep /= I64
+ -> ptext SLIT("ASSIGN_DBL") <>
+ parens (mkP_ <> pprExpr1 dest <> comma <> pprExpr src) <> semi
+
| otherwise
-> hsep [ pprExpr (CmmLoad dest rep), equals, pprExpr src <> semi ]
where
CmmLoad e I64 | wordRep /= I64
-> ptext SLIT("PK_Word64") <> parens (mkP_ <> pprExpr1 e)
+ CmmLoad e F64 | wordRep /= I64
+ -> ptext SLIT("PK_DBL") <> parens (mkP_ <> pprExpr1 e)
+
CmmLoad (CmmReg r) rep
| isPtrReg r && rep == wordRep
-> char '*' <> pprAsPtrReg r
strangeRegType :: CmmReg -> Maybe SDoc
strangeRegType (CmmGlobal CurrentTSO) = Just (ptext SLIT("struct StgTSO_ *"))
strangeRegType (CmmGlobal CurrentNursery) = Just (ptext SLIT("struct bdescr_ *"))
+strangeRegType (CmmGlobal BaseReg) = Just (ptext SLIT("struct StgRegTable_ *"))
strangeRegType _ = Nothing
-- pprReg just prints the register name.
where
ppr_results [] = empty
ppr_results [(one,hint)]
- = pprExpr (CmmReg one) <> ptext SLIT(" = ")
+ | Just ty <- strangeRegType one
+ = pprReg one <> ptext SLIT(" = ") <> parens ty
+ | otherwise
+ = pprReg one <> ptext SLIT(" = ")
<> pprUnHint hint (cmmRegRep one)
ppr_results _other = panic "pprCall: multiple results"
VanillaReg n -> char 'R' <> int n -- without the .w suffix
_ -> pprGlobalReg gr
+-- Currently we only have these two calling conventions, but this might
+-- change in the future...
is_cish CCallConv = True
is_cish StdCallConv = True
-is_cish _ = False
-- ---------------------------------------------------------------------
-- Find and print local and external declarations for a list of
te_Expr :: CmmExpr -> TE ()
te_Expr (CmmLit lit) = te_Lit lit
-te_Expr (CmmReg r) = te_Reg r
te_Expr (CmmLoad e _) = te_Expr e
+te_Expr (CmmReg r) = te_Reg r
te_Expr (CmmMachOp _ es) = mapM_ te_Expr es
te_Expr (CmmRegOff r _) = te_Reg r
-te_Expr _ = return ()
te_Reg :: CmmReg -> TE ()
te_Reg (CmmLocal l) = te_temp l
| otherwise = ptext SLIT("0x") <> go w <> repsuffix rep
where
-- type suffix for literals:
- -- on 32-bit platforms, add "LL" to 64-bit literals
- repsuffix I64 | wORD_SIZE == 4 = ptext SLIT("LL")
+ -- Integer literals are unsigned in Cmm/C. We explicitly cast to
+ -- signed values for doing signed operations, but at all other
+ -- times values are unsigned. This also helps eliminate occasional
+ -- warnings about integer overflow from gcc.
+
+ -- on 32-bit platforms, add "ULL" to 64-bit literals
+ repsuffix I64 | wORD_SIZE == 4 = ptext SLIT("ULL")
-- on 64-bit platforms with 32-bit int, add "L" to 64-bit literals
- repsuffix I64 | cINT_SIZE == 4 = ptext SLIT("L")
- repsuffix _ = empty
+ repsuffix I64 | cINT_SIZE == 4 = ptext SLIT("UL")
+ repsuffix _ = char 'U'
go 0 = empty
go w' = go q <> dig