Add Int8# and Word8#

This is the first step of implementing:
https://github.com/ghc-proposals/ghc-proposals/pull/74

The main highlights/changes:

- `primops.txt.pp` gets two new sections for two new primitive types
  for signed and unsigned 8-bit integers (`Int8#` and `Word8`
  respectively) along with basic arithmetic and comparison
  operations. `PrimRep`/`RuntimeRep` get two new constructors for
  them. All of the primops translate into the existing `MachOP`s.

- For `CmmCall`s the codegen will now zero-extend the values at call
  site (so that they can be moved to the right register) and then
  truncate them back their original width.

- x86 native codegen needed some updates, since it wasn't able to deal
  with the new widths, but all the changes are quite localized. LLVM
  backend seems to just work.

Bumps binary submodule.

Signed-off-by: Michal Terepeta <michal.terepeta@gmail.com>

Test Plan: ./validate with new tests

Reviewers: hvr, goldfire, bgamari, simonmar

Subscribers: Abhiroop, dfeuer, rwbarton, thomie, carter

Differential Revision: https://phabricator.haskell.org/D4475

1 files changed, 23 insertions, 3 deletions

diff --git a/compiler/prelude/TysPrim.hs b/compiler/prelude/TysPrim.hs
index 4a69df8e3e..d9e47be060 100644
--- a/compiler/prelude/TysPrim.hs
+++ b/compiler/prelude/TysPrim.hs
@@ -64,6 +64,9 @@ module TysPrim(
         weakPrimTyCon,                  mkWeakPrimTy,
         threadIdPrimTyCon,              threadIdPrimTy,
 
+        int8PrimTyCon,          int8PrimTy,
+        word8PrimTyCon,         word8PrimTy,
+
         int32PrimTyCon,         int32PrimTy,
         word32PrimTyCon,        word32PrimTy,
 
@@ -85,8 +88,9 @@ import GhcPrelude
 import {-# SOURCE #-} TysWiredIn
   ( runtimeRepTy, unboxedTupleKind, liftedTypeKind
   , vecRepDataConTyCon, tupleRepDataConTyCon
-  , liftedRepDataConTy, unliftedRepDataConTy, intRepDataConTy
-  , wordRepDataConTy, int64RepDataConTy, word64RepDataConTy, addrRepDataConTy
+  , liftedRepDataConTy, unliftedRepDataConTy, intRepDataConTy, int8RepDataConTy
+  , wordRepDataConTy, int64RepDataConTy, word8RepDataConTy, word64RepDataConTy
+  , addrRepDataConTy
   , floatRepDataConTy, doubleRepDataConTy
   , vec2DataConTy, vec4DataConTy, vec8DataConTy, vec16DataConTy, vec32DataConTy
   , vec64DataConTy
@@ -143,6 +147,7 @@ exposedPrimTyCons
     , doublePrimTyCon
     , floatPrimTyCon
     , intPrimTyCon
+    , int8PrimTyCon
     , int32PrimTyCon
     , int64PrimTyCon
     , bcoPrimTyCon
@@ -163,6 +168,7 @@ exposedPrimTyCons
     , proxyPrimTyCon
     , threadIdPrimTyCon
     , wordPrimTyCon
+    , word8PrimTyCon
     , word32PrimTyCon
     , word64PrimTyCon
 
@@ -186,12 +192,14 @@ mkBuiltInPrimTc fs unique tycon
                   BuiltInSyntax
 
 
-charPrimTyConName, intPrimTyConName, int32PrimTyConName, int64PrimTyConName, wordPrimTyConName, word32PrimTyConName, word64PrimTyConName, addrPrimTyConName, floatPrimTyConName, doublePrimTyConName, statePrimTyConName, proxyPrimTyConName, realWorldTyConName, arrayPrimTyConName, arrayArrayPrimTyConName, smallArrayPrimTyConName, byteArrayPrimTyConName, mutableArrayPrimTyConName, mutableByteArrayPrimTyConName, mutableArrayArrayPrimTyConName, smallMutableArrayPrimTyConName, mutVarPrimTyConName, mVarPrimTyConName, tVarPrimTyConName, stablePtrPrimTyConName, stableNamePrimTyConName, compactPrimTyConName, bcoPrimTyConName, weakPrimTyConName, threadIdPrimTyConName, eqPrimTyConName, eqReprPrimTyConName, eqPhantPrimTyConName, voidPrimTyConName :: Name
+charPrimTyConName, intPrimTyConName, int8PrimTyConName, int32PrimTyConName, int64PrimTyConName, wordPrimTyConName, word32PrimTyConName, word8PrimTyConName, word64PrimTyConName, addrPrimTyConName, floatPrimTyConName, doublePrimTyConName, statePrimTyConName, proxyPrimTyConName, realWorldTyConName, arrayPrimTyConName, arrayArrayPrimTyConName, smallArrayPrimTyConName, byteArrayPrimTyConName, mutableArrayPrimTyConName, mutableByteArrayPrimTyConName, mutableArrayArrayPrimTyConName, smallMutableArrayPrimTyConName, mutVarPrimTyConName, mVarPrimTyConName, tVarPrimTyConName, stablePtrPrimTyConName, stableNamePrimTyConName, compactPrimTyConName, bcoPrimTyConName, weakPrimTyConName, threadIdPrimTyConName, eqPrimTyConName, eqReprPrimTyConName, eqPhantPrimTyConName, voidPrimTyConName :: Name
 charPrimTyConName             = mkPrimTc (fsLit "Char#") charPrimTyConKey charPrimTyCon
 intPrimTyConName              = mkPrimTc (fsLit "Int#") intPrimTyConKey  intPrimTyCon
+int8PrimTyConName             = mkPrimTc (fsLit "Int8#") int8PrimTyConKey int8PrimTyCon
 int32PrimTyConName            = mkPrimTc (fsLit "Int32#") int32PrimTyConKey int32PrimTyCon
 int64PrimTyConName            = mkPrimTc (fsLit "Int64#") int64PrimTyConKey int64PrimTyCon
 wordPrimTyConName             = mkPrimTc (fsLit "Word#") wordPrimTyConKey wordPrimTyCon
+word8PrimTyConName            = mkPrimTc (fsLit "Word8#") word8PrimTyConKey word8PrimTyCon
 word32PrimTyConName           = mkPrimTc (fsLit "Word32#") word32PrimTyConKey word32PrimTyCon
 word64PrimTyConName           = mkPrimTc (fsLit "Word64#") word64PrimTyConKey word64PrimTyCon
 addrPrimTyConName             = mkPrimTc (fsLit "Addr#") addrPrimTyConKey addrPrimTyCon
@@ -500,8 +508,10 @@ primRepToRuntimeRep rep = case rep of
   LiftedRep     -> liftedRepDataConTy
   UnliftedRep   -> unliftedRepDataConTy
   IntRep        -> intRepDataConTy
+  Int8Rep       -> int8RepDataConTy
   WordRep       -> wordRepDataConTy
   Int64Rep      -> int64RepDataConTy
+  Word8Rep      -> word8RepDataConTy
   Word64Rep     -> word64RepDataConTy
   AddrRep       -> addrRepDataConTy
   FloatRep      -> floatRepDataConTy
@@ -543,6 +553,11 @@ intPrimTy       = mkTyConTy intPrimTyCon
 intPrimTyCon :: TyCon
 intPrimTyCon    = pcPrimTyCon0 intPrimTyConName IntRep
 
+int8PrimTy :: Type
+int8PrimTy     = mkTyConTy int8PrimTyCon
+int8PrimTyCon :: TyCon
+int8PrimTyCon  = pcPrimTyCon0 int8PrimTyConName Int8Rep
+
 int32PrimTy :: Type
 int32PrimTy     = mkTyConTy int32PrimTyCon
 int32PrimTyCon :: TyCon
@@ -558,6 +573,11 @@ wordPrimTy      = mkTyConTy wordPrimTyCon
 wordPrimTyCon :: TyCon
 wordPrimTyCon   = pcPrimTyCon0 wordPrimTyConName WordRep
 
+word8PrimTy :: Type
+word8PrimTy     = mkTyConTy word8PrimTyCon
+word8PrimTyCon :: TyCon
+word8PrimTyCon  = pcPrimTyCon0 word8PrimTyConName Word8Rep
+
 word32PrimTy :: Type
 word32PrimTy    = mkTyConTy word32PrimTyCon
 word32PrimTyCon :: TyCon