Add atomicReadMVar to Control.Concurrent.MVar and friends.

Also renumber thread statuses as necessary.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
Implement tryAtomicReadMVar.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
Fix build.

We forgot to import tryAtomicReadMVar.

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Rename atomicReadMVar and friends to readMVar, replacing old readMVar.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
Minor rewording.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
Expose new Word operation to swap endianness for Word{16,32,64}

Authored-by: Vincent Hanquez <tab@snarc.org>
Signed-off-by: Austin Seipp <aseipp@pobox.com>
Fix #7787

Now the pair is evaluated strictly inside the exception handler.  I
figured this would be less likely to introduce space leaky bugs than
using an irrefutable pattern match.
Add test for #7787
Fix GHC.Enum on 32bit platforms; fixes #8072

Diagnosed by int-e.

MachDeps.h wasn't being included in Enum.lhs, and the old
WORD_SIZE_IN_BITS test didn't fail when WORD_SIZE_IN_BITS isn't
defined. Now we get an error instead.
Fix bug in IO manager when number of capabilities is changed; fixes #8087

Patch from parcs.
Implement "TypeLevelReasoning" proposal at wiki:TypeLevelReasoning

This commit includes a propositional equality (:=:) in Data.Type.Equality,
a Proxy type in Data.Proxy, and has updates to Typeable.

There is an unfortunate number of hs-boot files necessary, but that
seems cleaner than moving Typeable instances around willy-nilly.
Eliminate Equality.hs-boot and Proxy.hs-boot by moving instances
Add asProxyTypeOf and Trustworthy pragma to Data.Proxy
We need NegativeLiterals for GHC.Int or we get warnings
Mark the roles of Ptr and FunPtr as R, not P!
Comparison primops return Int# (Fixes #6135)

For a deatiled discussion of this changes please visit the wiki page:
http://hackage.haskell.org/trac/ghc/wiki/PrimBool
Use primop wrappers instead of tagToEnum#
Fingerprint: Add Show instance for easier debugging

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Fingerprint: Add getFileHash

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Fix -Werror failure in GHC.Fingerprint

Signed-off-by: Austin Seipp <aseipp@pobox.com>