summaryrefslogtreecommitdiff
path: root/libraries/ghc-prim/changelog.md
blob: effa32479f4970cd738ba5f27035fdcb174dba5d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
## 0.7.0 (edit as necessary)

- Shipped with GHC 8.12.1

- Add known-key `cstringLength#` to `GHC.CString`. This is just the
  C function `strlen`, but a built-in rewrite rule allows GHC to
  compute the result at compile time when the argument is known.
  
- In order to support unicode better the following functions in `GHC.CString`
  gained UTF8 counterparts:

        unpackAppendCStringUtf8# :: Addr# -> [Char] -> [Char]
        unpackFoldrCStringUtf8# :: Addr# -> (Char -> a -> a) -> a -> a

- unpackFoldrCString* variants can now inline in phase [0].

  If the folding function is known this allows for unboxing of the
  Char argument resulting in much faster code.

- Renamed the singleton tuple `GHC.Tuple.Unit` to `GHC.Tuple.Solo`.

- Add primops for atomic exchange:

        interlockedExchangeAddr# :: Addr# -> Addr# -> State# s -> (# State# s, Addr# #)
        interlockedExchangeInt# :: Addr# -> Int# -> State# s -> (# State# s, Int# #)

## 0.6.1 (edit as necessary)

- Shipped with GHC 8.10.1

- Add primop for shrinking `SmallMutableArray#`
  to `GHC.Prim`:

        shrinkSmallMutableArray# :: SmallMutableArray# s a -> Int# -> State# s -> State# s

  Note that `resizeSmallMutableArray#` is not included as
  as primitive. It has been implemented in library space in
  `GHC.Exts`. See the release notes of `base`.

- Added to `GHC.Prim`:

        closureSize# :: a -> Int#

- Added to `GHC.Prim`:

        bitReverse# :: Word# -> Word#
        bitReverse8# :: Word# -> Word#
        bitReverse16# :: Word# -> Word#
        bitReverse32# :: Word# -> Word#
        bitReverse64# :: Word# -> Word#

  `bitReverse#` is a primop that, for a `Word` of 8, 16, 32 or 64 bits,
  reverses the order of its bits e.g. `0b110001` becomes `0b100011`.
  These primitives use optimized machine instructions when available.

- Add Int# multiplication primop:

      timesInt2# :: Int# -> Int# -> (# Int#, Int#, Int# #)

   `timesInt2#` computes the multiplication of its two parameters and returns a
   triple (isHighNeeded,high,low) where high and low are respectively the high
   and low bits of the double-word result. isHighNeeded is a cheap way to test
   if the high word is a sign-extension of the low word (isHighNeeded = 0#) or
   not (isHighNeeded = 1#).

## 0.6.0

- Shipped with GHC 8.8.1

- Added to `GHC.Prim`:

        traceBinaryEvent# :: Addr# -> Int# -> State# s -> State# s

## 0.5.3

- Shipped with GHC 8.6.1

- Added to `GHC.Prim`:

        addWordC# :: Word# -> Word# -> (# Word#, Int# #)

- `unpackClosure#` can now unpack any valid Haskell closure.
  Previously it returned empty pointer and non-pointer arrays
  for thunks.

- Add unaligned bytearray access primops (#4442)

         readWord8ArrayAsChar# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Char# #)
         readWord8ArrayAsAddr# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Addr# #)
         readWord8ArrayAsFloat# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Float# #)
         readWord8ArrayAsDouble# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Double# #)
         readWord8ArrayAsStablePtr# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, StablePtr# #)
         readWord8ArrayAsInt16# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Int16# #)
         readWord8ArrayAsInt32# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Int32# #)
         readWord8ArrayAsInt64# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Int64# #)
         readWord8ArrayAsInt# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Int# #)

         readWord8ArrayAsWord16# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Word16# #)
         readWord8ArrayAsWord32# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Word32# #)
         readWord8ArrayAsWord64# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Word64# #)
         readWord8ArrayAsWord# :: MutableByteArray# s -> Int# -> State# s -> (# State# s, Word# #)

         writeWord8ArrayAsChar# :: MutableByteArray# s -> Int# -> Char# -> State# s -> State# s
         writeWord8ArrayAsAddr# :: MutableByteArray# s -> Int# -> Addr# -> State# s -> State# s
         writeWord8ArrayAsFloat# :: MutableByteArray# s -> Int# -> Float# -> State# s -> State# s
         writeWord8ArrayAsDouble# :: MutableByteArray# s -> Int# -> Double# -> State# s -> State# s
         writeWord8ArrayAsStablePtr# :: MutableByteArray# s -> Int# -> StablePtr# -> State# s -> State# s

         writeWord8ArrayAsInt16# :: MutableByteArray# s -> Int# -> Int16# -> State# s -> State# s
         writeWord8ArrayAsInt32# :: MutableByteArray# s -> Int# -> Int32# -> State# s -> State# s
         writeWord8ArrayAsInt64# :: MutableByteArray# s -> Int# -> Int64# -> State# s -> State# s
         writeWord8ArrayAsInt# :: MutableByteArray# s -> Int# -> Int# -> State# s -> State# s

         writeWord8ArrayAsWord16# :: MutableByteArray# s -> Int# -> Word16# -> State# s -> State# s
         writeWord8ArrayAsWord32# :: MutableByteArray# s -> Int# -> Word32# -> State# s -> State# s
         writeWord8ArrayAsWord64# :: MutableByteArray# s -> Int# -> Word64# -> State# s -> State# s
         writeWord8ArrayAsWord# :: MutableByteArray# s -> Int# -> Word# -> State# s -> State# s

## 0.5.2.0

- Shipped with GHC 8.4.1

- Added to `GHC.Prim`:

        compareByteArrays# :: ByteArray# -> Int# -> ByteArray# -> Int# -> Int# -> Int#

- Don't allocate a thunk for each unpacked UTF-8 character in `unpackCStringUtf8#`

## 0.5.1.1 *November 2017*

- Shipped with GHC 8.2.2

- Changed strictness properties of `catchRetry#` (#14171)

## 0.5.1.0 *July 2017*

- Shipped with GHC 8.2.1

- Added to `GHC.Prim`:

        fabsDouble# :: Double# -> Double#
        fabsFloat# :: Float# -> Float#
        isByteArrayPinned# :: ByteArray# -> Int#
        isMutableByteArrayPinned# :: MutableByteArray# s -> Int#
        anyToAddr# :: a -> State# (RealWorld) -> (# State# (RealWorld),Addr# #)

- New primitives for compact regions in `GHC.Prim`:

        Compact#
        compactNew#
        compactResize#
        compactContains#
        compactContainsAny#
        compactGetFirstBlock#
        compactGetNextBlock#
        compactAllocateBlock#
        compactFixupPointers#
        compactAdd#
        compactAddWithSharing#
        compactSize#

- Generalised `noDuplicate#` from

        noDuplicate# :: State# (RealWorld) -> State# (RealWorld)

    to

        noDuplicate# :: State# s -> State# s


## 0.5.0.0

- Shipped with GHC 8.0.1

- `GHC.Classes`: new `class IP (a :: Symbol) b | a -> b`

- `GHC.Prim`: changed type signatures from

        check# :: (State# RealWorld -> (# State# RealWorld, a #)) -> State# RealWorld -> (# State# RealWorld, () #)
        finalizeWeak# :: Weak# a -> State# RealWorld -> (# State# RealWorld, Int#, State# RealWorld -> (# State# RealWorld, () #) #)
        mkWeak# :: a -> b -> c -> State# RealWorld -> (# State# RealWorld, Weak# b #)

    to

        check# :: (State# RealWorld -> (# State# RealWorld, a #)) -> State# RealWorld -> State# RealWorld
        finalizeWeak# :: Weak# a -> State# RealWorld -> (# State# RealWorld, Int#, State# RealWorld -> (# State# RealWorld, b #) #)
        mkWeak# :: a -> b -> (State# RealWorld -> (# State# RealWorld, c #)) -> State# RealWorld -> (# State# RealWorld, Weak# b #)

- Removed from `GHC.Prim`:

        parAt# :: b -> a -> Int# -> Int# -> Int# -> Int# -> c -> Int#
        parAtAbs# :: a -> Int# -> Int# -> Int# -> Int# -> Int# -> b -> Int#
        parAtForNow# :: b -> a -> Int# -> Int# -> Int# -> Int# -> c -> Int#
        parAtRel# :: a -> Int# -> Int# -> Int# -> Int# -> Int# -> b -> Int#
        parGlobal# :: a -> Int# -> Int# -> Int# -> Int# -> b -> Int#
        parLocal# :: a -> Int# -> Int# -> Int# -> Int# -> b -> Int#

- Added to `GHC.Prim`:

        getSizeofMutableByteArray# :: MutableByteArray# d -> State# d -> (# State# d, Int# #)
        subWordC# :: Word# -> Word# -> (# Word#, Int# #)
        runRW# :: (State# RealWorld -> (# State# RealWorld, o #)) -> (# State# RealWorld, o #)

- Added to `GHC.Types`:

        data Module = Module TrName TrName
        data Nat
        data Symbol
        data TrName = TrNameS Addr# | TrNameD [Char]
        data TyCon = TyCon Word# Word# Module TrName