eeb84b0 · streamly · git.iko.soy

docs/Build.md+1−1

compare with master

unifiedsplit

@@ -2,7 +2,7 @@

2

3Recommended GHC options are:

4

5− `-O2 -fspec-constr-recursive=10 -fmax-worker-args=16`

5+ `-O2 -fspec-constr-recursive=16 -fmax-worker-args=16`

6

7`-fspec-constr-recursive` is needed for better stream fusion by enabling

8the `SpecConstr` optimization in more cases.

src/Streamly/Streams/StreamD.hs+5−2

@@ -3815,6 +3815,10 @@ data WList = WCons !Word8 !WList | WNil

3815

3816data EncodeState s = EncodeState s !WList

3817

3818+-- More yield points improve performance, but I am not sure if they can cause

3819+-- too much code bloat or some trouble with fusion. So keeping only two yield

3820+-- points for now, one for the ascii chars (fast path) and one for all other

3821+-- paths (slow path).

3818{-# INLINE_NORMAL encodeUtf8 #-}

3822{-# INLINE_NORMAL encodeUtf8 #-}

3819encodeUtf8 :: Monad m => Stream m Char -> Stream m Word8

3823encodeUtf8 :: Monad m => Stream m Char -> Stream m Word8

3820encodeUtf8 (Stream step state) = Stream step' (EncodeState state WNil)

3824encodeUtf8 (Stream step state) = Stream step' (EncodeState state WNil)

@@ -3828,8 +3832,7 @@ encodeUtf8 (Stream step state) = Stream step' (EncodeState state WNil)

3828 case ord c of

3832 case ord c of

3829 x

3833 x

3830 | x <= 0x7F ->

3834 | x <= 0x7F ->

3831− Skip

3832− (EncodeState s (WCons (fromIntegral x) WNil))

3835+ Yield (fromIntegral x) (EncodeState s WNil)

3833 | x <= 0x7FF -> Skip (EncodeState s (ord2 c))

3836 | x <= 0x7FF -> Skip (EncodeState s (ord2 c))

3834 | x <= 0xFFFF ->

3837 | x <= 0xFFFF ->

3835 if isSurrogate c

3838 if isSurrogate c

streamly.cabal+1−1

@@ -205,7 +205,7 @@ common compile-options

205

206common optimization-options

207 ghc-options: -O2

208− -fspec-constr-recursive=10

208+ -fspec-constr-recursive=16

209 -fmax-worker-args=16

210

211common threading-options