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ModLocation is the data type which tells you the locations of all the
build products which can affect recompilation. It is now computed in one
place and not modified through the pipeline. Important locations will
now just consult ModLocation rather than construct the dynamic object
path incorrectly.
* Add paths for dynamic object and dynamic interface files to
ModLocation.
* Always use the paths from mod location when looking for where to find
any interface or object file.
* Always use the paths in a ModLocation when deciding where to write an
interface and object file.
* Remove `dynamicOutputFile` and `dynamicOutputHi` functions which
*calculated* (incorrectly) the location of `dyn_o` and `dyn_hi` files.
* Don't set `outputFile_` and so-on in `enableCodeGenWhen`, `-o` and
hence `outputFile_` should not affect the location of object files in
`--make` mode. It is now sufficient to just update the ModLocation with
the temporary paths.
* In `hscGenBackendPipeline` don't recompute the `ModLocation` to
account for `-dynamic-too`, the paths are now accurate from the start
of the run.
* Rename `getLocation` to `mkOneShotModLocation`, as that's the only
place it's used. Increase the locality of the definition by moving it
close to the use-site.
* Load the dynamic interface from ml_dyn_hi_file rather than attempting
to reconstruct it in load_dynamic_too.
* Add a variety of tests to check how -o -dyno etc interact with each
other.
Some other clean-ups
* DeIOify mkHomeModLocation and friends, they are all pure functions.
* Move FinderOpts into GHC.Driver.Config.Finder, next to initFinderOpts.
* Be more precise about whether we mean outputFile or outputFile_: there
were many places where outputFile was used but the result shouldn't have
been affected by `-dyno` (for example the filename of the resulting
executable). In these places dynamicNow would never be set but it's
still more precise to not allow for this possibility.
* Typo fixes suffices -> suffixes in the appropiate places.
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The compiler should be independent of the target.
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The specification is now simple
* On linux, use `-Xlinker -rpath -Xlinker` to set the rpath of the
executable
* On darwin, never use `-Xlinker -rpath -Xlinker`, always inject
the rpath afterwards, see `runInjectRPaths`.
* If `-fno-use-rpaths` is passed then *never* inject anything into the
rpath.
Fixes #20004
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Replace uses of WARN macro with calls to:
warnPprTrace :: Bool -> SDoc -> a -> a
Remove the now unused HsVersions.h
Bump haddock submodule
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Before this patch, the only way to override GHC's default logging
behavior was to set `log_action`, `dump_action` and `trace_action`
fields in DynFlags. This patch introduces a new Logger abstraction and
stores it in HscEnv instead.
This is part of #17957 (avoid storing state in DynFlags). DynFlags are
duplicated and updated per-module (because of OPTIONS_GHC pragma), so
we shouldn't store global state in them.
This patch also fixes a race in parallel "--make" mode which updated
the `generatedDumps` IORef concurrently.
Bump haddock submodule
The increase in MultilayerModules is tracked in #19293.
Metric Increase:
MultiLayerModules
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The unit database cache, the home unit and the unit state were stored in
DynFlags while they ought to be stored in the compiler session state
(HscEnv). This patch fixes this.
It introduces a new UnitEnv type that should be used in the future to
handle separate unit environments (especially host vs target units).
Related to #17957
Bump haddock submodule
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This addes the necessary logic to support aarch64 on elf, as well
as aarch64 on mach-o, which Apple calls arm64.
We change architecture name to AArch64, which is the official arm
naming scheme.
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1) Don't modify DynFlags (too much) for -dynamic-too: now when we
generate dynamic outputs for "-dynamic-too", we only set "dynamicNow"
boolean field in DynFlags instead of modifying several other fields.
These fields now have accessors that take dynamicNow into account.
2) Use DynamicTooState ADT to represent -dynamic-too state. It's much
clearer than the undocumented "DynamicTooConditional" that was used
before.
As a result, we can finally remove the hscs_iface_dflags field in
HscRecomp. There was a comment on this field saying:
"FIXME (osa): I don't understand why this is necessary, but I spent
almost two days trying to figure this out and I couldn't .. perhaps
someone who understands this code better will remove this later."
I don't fully understand the details, but it was needed because of the
changes made to the DynFlags for -dynamic-too.
There is still something very dubious in GHC.Iface.Recomp: we have to
disable the "dynamicNow" flag at some point for some Backpack's "heinous
hack" to continue to work. It may be because interfaces for indefinite
units are always non-dynamic, or because we mix and match dynamic and
non-dynamic interfaces (#9176), or something else, who knows?
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Move linker related code into GHC.Linker. Previously it was scattered
into GHC.Unit.State, GHC.Driver.Pipeline, GHC.Runtime.Linker, etc.
Add documentation in GHC.Linker
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