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Update Haddock submodule
Metric Increase:
haddock.compiler
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omit_ways expects a list but this was broken in several cases.
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This eliminates most uses of run_command in the testsuite in favor of the more
structured makefile_test.
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This reverts commit 76c8fd674435a652c75a96c85abbf26f1f221876.
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Summary:
In some modules we directly dump the debugging output to STDOUT
via 'putLogMsg', 'printInfoForUser' etc. However, if `-ddump-to-file`
is enabled, that output should be written to a file. Easily fixed.
Certain tests (T3017, Roles3, T12763 etc.) expect part of the
output generated by `-ddump-types` to be in 'PprUser' style. However,
generally we want all other debugging output to use 'PprDump'
style. `traceTcRn` and `traceTcRnForUser` help us accomplish this.
This patch also documents some missing flags in the users guide.
Reviewers: RyanGlScott, bgamari, hvr
Reviewed By: RyanGlScott
Subscribers: rwbarton, carter
GHC Trac Issues: #15953
Differential Revision: https://phabricator.haskell.org/D5382
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Summary:
Reimplement global FastString table using a concurrent hashatable with
fixed size segments and dynamically growing buckets instead of fixed size
buckets.
This addresses the problem that `mkFastString` was not linear when the
total number of entries was large.
Test Plan:
./validate
```
inplace/bin/ghc-stage2 --interactive -dfaststring-stats < /dev/null
GHCi, version 8.7.20181005: http://www.haskell.org/ghc/ :? for help
Prelude> Leaving GHCi.
FastString stats:
segments: 256
buckets: 16384
entries: 7117
largest segment: 64
smallest segment: 64
longest bucket: 5
has z-encoding: 0%
```
Also comapre the two implementation using
{P187}
The new implementation is on a par with the old version with different
conbination of parameters and perform better when the number of
FastString's are large.
{P188}
Reviewers: simonmar, bgamari, niteria
Reviewed By: simonmar, bgamari
Subscribers: rwbarton, carter
GHC Trac Issues: #14854
Differential Revision: https://phabricator.haskell.org/D5211
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