-- TODO: Add support for interruptible/uninterruptible foreign call specification
{
-{-# OPTIONS -Wwarn -w -XNoMonomorphismRestriction #-}
--- The NoMonomorphismRestriction deals with a Happy infelicity
--- With OutsideIn's more conservativ monomorphism restriction
--- we aren't generalising
--- notHappyAtAll = error "urk"
--- which is terrible. Switching off the restriction allows
--- the generalisation. Better would be to make Happy generate
--- an appropriate signature.
---
+{-# LANGUAGE BangPatterns #-} -- required for versions of Happy before 1.18.6
+{-# OPTIONS -Wwarn -w #-}
-- 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
import CostCentre
import BlockId
-import Cmm
-import PprCmm
+import OldCmm
+import OldPprCmm()
import CmmUtils
import CmmLex
import CLabel
| NAME '(' exprs0 ')' ';'
{% stmtMacro $1 $3 }
| 'switch' maybe_range expr '{' arms default '}'
- { doSwitch $2 $3 $5 $6 }
+ { do as <- sequence $5; doSwitch $2 $3 as $6 }
| 'goto' NAME ';'
{ do l <- lookupLabel $2; stmtEC (CmmBranch l) }
| 'jump' expr maybe_actuals ';'
{ do e1 <- $2; e2 <- sequence $3; stmtEC (CmmJump e1 e2) }
| 'return' maybe_actuals ';'
{ do e <- sequence $2; stmtEC (CmmReturn e) }
+ | 'if' bool_expr 'goto' NAME
+ { do l <- lookupLabel $4; cmmRawIf $2 l }
| 'if' bool_expr '{' body '}' else
- { ifThenElse $2 $4 $6 }
+ { cmmIfThenElse $2 $4 $6 }
opt_never_returns :: { CmmReturnInfo }
: { CmmMayReturn }
: '[' INT '..' INT ']' { Just (fromIntegral $2, fromIntegral $4) }
| {- empty -} { Nothing }
-arms :: { [([Int],ExtCode)] }
+arms :: { [ExtFCode ([Int],Either BlockId ExtCode)] }
: {- empty -} { [] }
| arm arms { $1 : $2 }
-arm :: { ([Int],ExtCode) }
- : 'case' ints ':' '{' body '}' { ($2, $5) }
+arm :: { ExtFCode ([Int],Either BlockId ExtCode) }
+ : 'case' ints ':' arm_body { do b <- $4; return ($2, b) }
+
+arm_body :: { ExtFCode (Either BlockId ExtCode) }
+ : '{' body '}' { return (Right $2) }
+ | 'goto' NAME ';' { do l <- lookupLabel $2; return (Left l) }
ints :: { [Int] }
: INT { [ fromIntegral $1 ] }
-- 'default' branches
| {- empty -} { Nothing }
+-- Note: OldCmm doesn't support a first class 'else' statement, though
+-- CmmNode does.
else :: { ExtCode }
: {- empty -} { nopEC }
| 'else' '{' body '}' { $3 }
( "gtu", MO_U_Gt ),
( "ltu", MO_U_Lt ),
- ( "flt", MO_S_Lt ),
- ( "fle", MO_S_Le ),
- ( "feq", MO_Eq ),
- ( "fne", MO_Ne ),
- ( "fgt", MO_S_Gt ),
- ( "fge", MO_S_Ge ),
- ( "fneg", MO_S_Neg ),
-
- ( "and", MO_And ),
+ ( "and", MO_And ),
( "or", MO_Or ),
( "xor", MO_Xor ),
( "com", MO_Not ),
( "shrl", MO_U_Shr ),
( "shra", MO_S_Shr ),
- ( "lobits8", flip MO_UU_Conv W8 ),
+ ( "fadd", MO_F_Add ),
+ ( "fsub", MO_F_Sub ),
+ ( "fneg", MO_F_Neg ),
+ ( "fmul", MO_F_Mul ),
+ ( "fquot", MO_F_Quot ),
+
+ ( "feq", MO_F_Eq ),
+ ( "fne", MO_F_Ne ),
+ ( "fge", MO_F_Ge ),
+ ( "fle", MO_F_Le ),
+ ( "fgt", MO_F_Gt ),
+ ( "flt", MO_F_Lt ),
+
+ ( "lobits8", flip MO_UU_Conv W8 ),
( "lobits16", flip MO_UU_Conv W16 ),
( "lobits32", flip MO_UU_Conv W32 ),
( "lobits64", flip MO_UU_Conv W64 ),
callishMachOps = listToUFM $
map (\(x, y) -> (mkFastString x, y)) [
- ( "write_barrier", MO_WriteBarrier )
+ ( "write_barrier", MO_WriteBarrier ),
+ ( "memcpy", MO_Memcpy ),
+ ( "memset", MO_Memset ),
+ ( "memmove", MO_Memmove )
-- ToDo: the rest, maybe
]
-- ToDo: smart constructors which simplify the boolean expression.
-ifThenElse cond then_part else_part = do
+cmmIfThenElse cond then_part else_part = do
then_id <- code newLabelC
join_id <- code newLabelC
c <- cond
-- fall through to join
code (labelC join_id)
+cmmRawIf cond then_id = do
+ c <- cond
+ emitCond c then_id
+
-- 'emitCond cond true_id' emits code to test whether the cond is true,
-- branching to true_id if so, and falling through otherwise.
emitCond (BoolTest e) then_id = do
-- optional range on the switch (eg. switch [0..7] {...}), or by
-- the minimum/maximum values from the branches.
-doSwitch :: Maybe (Int,Int) -> ExtFCode CmmExpr -> [([Int],ExtCode)]
+doSwitch :: Maybe (Int,Int) -> ExtFCode CmmExpr -> [([Int],Either BlockId ExtCode)]
-> Maybe ExtCode -> ExtCode
doSwitch mb_range scrut arms deflt
= do
-- ToDo: check for out of range and jump to default if necessary
stmtEC (CmmSwitch expr entries)
where
- emitArm :: ([Int],ExtCode) -> ExtFCode [(Int,BlockId)]
- emitArm (ints,code) = do
+ emitArm :: ([Int],Either BlockId ExtCode) -> ExtFCode [(Int,BlockId)]
+ emitArm (ints,Left blockid) = return [ (i,blockid) | i <- ints ]
+ emitArm (ints,Right code) = do
blockid <- forkLabelledCodeEC code
return [ (i,blockid) | i <- ints ]
-
-- -----------------------------------------------------------------------------
-- Putting it all together
showPass dflags "ParseCmm"
buf <- hGetStringBuffer filename
let
- init_loc = mkSrcLoc (mkFastString filename) 1 1
+ init_loc = mkRealSrcLoc (mkFastString filename) 1 1
init_state = (mkPState dflags buf init_loc) { lex_state = [0] }
-- reset the lex_state: the Lexer monad leaves some stuff
-- in there we don't want.
projects / ghc-hetmet.git / blobdiff