Remove remains of _scc_ (#8170)
Remove debugging output (#8356)
Minor typos (fixes #8496)
Sync up to `haskeline` upstream's HEAD

This contains the Haskeline commit fixing #7768

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Load all modules before reporting errors (#8322)

Instead of reporting only one "module not found"" error.

Signed-off-by: Austin Seipp <austin@well-typed.com>
Add support for module reification (#1480)

Authored-by: Gergely Risko <gergely@risko.hu>
Signed-off-by: Austin Seipp <austin@well-typed.com>
Fix a race condition when PROFILING (#8453)

Signed-off-by: Austin Seipp <austin@well-typed.com>
Fix loop on 64bit Big-Endian platforms (#8134)

This is a fun one.

In the RTS, `cas` expects a pointer to StgWord which will translate to
unsigned long (8 bytes under LP64.) But we had previously declared
token_locked as *StgBool* - which evaluates to 'int' (4 bytes under
LP64.) That means we fail to provide enough storage for the cas
primitive, causing it to corrupt memory on a 64bit platform.

Hilariously, this somehow did not affect little-endian platforms (ARM,
x86, etc) before. That's because to clear our lock token, we would say:

    token_locked = 0;

But because token_locked is 32bits technically, this only writes to
half of the 64bit quantity. On a Big-Endian machine, this won't do
anything. That is, token_locked starts as 0:

 / token_locked
 |
 v
 0x00000000

and the first cas modifies the memory to:

 / valid    / corrupted
 |          |
 v          v
 0x00000000 0x00000001

We then clear token_locked, but this doesn't change the corrupted 4
bytes of memory. And then we try to lock the token again, spinning until
it is released - clearly a deadlock.

Related: Windows (amd64) doesn't follow LP64, but LLP64, where both
int and long are 4 bytes, so this shouldn't change anything on these
platforms.

Thanks to Reid Barton for helping the diagnosis. Also, thanks to Jens
Peterson who confirmed this also fixes building GHC on Fedora/ppc64 and
Fedora/s390x.

Authored-by: Gustavo Luiz Duarte <gustavold@linux.vnet.ibm.com>
Signed-off-by: Austin Seipp <austin@well-typed.com>
rts_apply uses CCS_MAIN rather than CCS_SYSTEM (#7753)

Signed-off-by: Austin Seipp <austin@well-typed.com>
Remove superfluous #ifdef from Takano's patch.

Signed-off-by: Austin Seipp <austin@well-typed.com>
adding further documentation and explanation to the prefetch primops

Signed-off-by: Carter Tazio Schonwald <carter.schonwald@gmail.com>
Signed-off-by: Austin Seipp <austin@well-typed.com>
Nuke trailing whitespace.

Signed-off-by: Austin Seipp <austin@well-typed.com>
Bump all version numbers in release notes.

Signed-off-by: Austin Seipp <austin@well-typed.com>
Silence two AMP warnings

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Update documentation concerning prefetch ops

Also remove can_fail=True since it's likely unnecessary upon discussion
(see #8256.)

Signed-off-by: Austin Seipp <austin@well-typed.com>
Update obsolete URLs in documentation

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Fix obsolete mention of `darcs-all` script

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Tweak lookup semantics for GHCi macros

This changes the prefix-based lookup to prefer macros over builtins only if
the macro name matches an existing builtin name. See #8305 for more details.

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Mention some new instances in release notes
Improve pretty printing of IfaceAT in interface files