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CmmToLlvm: renamce lcgPlatform -> llvmCgPlatform
CmmToLlvm: rename lcgContext -> llvmCgContext
CmmToLlvm: rename lcgFillUndefWithGarbage
CmmToLlvm: rename lcgSplitSections
CmmToLlvm: lcgBmiVersion -> llvmCgBmiVersion
CmmToLlvm: lcgLlvmVersion -> llvmCgLlvmVersion
CmmToLlvm: lcgDoWarn -> llvmCgDoWarn
CmmToLlvm: lcgLlvmConfig -> llvmCgLlvmConfig
CmmToLlvm: llvmCgPlatformMisc --> llvmCgLlvmTarget
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CodeOutput: LCGConfig, add handshake initLCGConfig
Add two modules:
GHC.CmmToLlvm.Config -- to hold the Llvm code gen config
GHC.Driver.Config.CmmToLlvm -- for initialization, other utils
CmmToLlvm: remove HasDynFlags, add LlvmConfig
CmmToLlvm: add lcgContext to LCGConfig
CmmToLlvm.Base: DynFlags --> LCGConfig
Llvm: absorb LlvmOpts into LCGConfig
CmmToLlvm.Ppr: swap DynFlags --> LCGConfig
CmmToLlvm.CodeGen: swap DynFlags --> LCGConfig
CmmToLlvm.CodeGen: swap DynFlags --> LCGConfig
CmmToLlvm.Data: swap LlvmOpts --> LCGConfig
CmmToLlvm: swap DynFlags --> LCGConfig
CmmToLlvm: move LlvmVersion to CmmToLlvm.Config
Additionally:
- refactor Config and initConfig to hold LlvmVersion
- push IO needed to get LlvmVersion to boundary between Cmm and LLvm
code generation
- remove redundant imports, this is much cleaner!
CmmToLlvm.Config: store platformMisc_llvmTarget
instead of all of platformMisc
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bound.
We use a non-inclusive upper bound so that setting the upper bound to 13 for
example means that all 12.x versions are accepted.
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Introduce LogFlags as a independent subset of DynFlags used for logging.
As a consequence in many places we don't have to pass both Logger and
DynFlags anymore.
The main reason for this refactoring is that I want to refactor the
systools interfaces: for now many systools functions use DynFlags both
to use the Logger and to fetch their parameters (e.g. ldInputs for the
linker). I'm interested in refactoring the way they fetch their
parameters (i.e. use dedicated XxxOpts data types instead of DynFlags)
for #19877. But if I did this refactoring before refactoring the Logger,
we would have duplicate parameters (e.g. ldInputs from DynFlags and
linkerInputs from LinkerOpts). Hence this patch first.
Some flags don't really belong to LogFlags because they are subsystem
specific (e.g. most DumpFlags). For example -ddump-asm should better be
passed in NCGConfig somehow. This patch doesn't fix this tight coupling:
the dump flags are part of the UI but they are passed all the way down
for example to infer the file name for the dumps.
Because LogFlags are a subset of the DynFlags, we must update the former
when the latter changes (not so often). As a consequence we now use
accessors to read/write DynFlags in HscEnv instead of using `hsc_dflags`
directly.
In the process I've also made some subsystems less dependent on DynFlags:
- CmmToAsm: by passing some missing flags via NCGConfig (see new fields
in GHC.CmmToAsm.Config)
- Core.Opt.*:
- by passing -dinline-check value into UnfoldingOpts
- by fixing some Core passes interfaces (e.g. CallArity, FloatIn)
that took DynFlags argument for no good reason.
- as a side-effect GHC.Core.Opt.Pipeline.doCorePass is much less
convoluted.
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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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Previously we would support only one LLVM major version. Here we
generalize this to accept a range, taking this range to be LLVM 10 to 11,
as 11 is necessary for Apple M1 support. We also accept 12, as that is
what apple ships with BigSur on the M1.
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'Stream' is implemented in the "yoneda" style for efficiency. By
representing a stream in this manner 'fmap' and '>>=' operations are
accumulated in the function parameters before being applied once when
the stream is destroyed. In the old implementation each usage of 'mapM'
and '>>=' would traverse the entire stream in order to apply the
substitution at the leaves. It is well-known for free monads that this
representation can improve performance, and the test results
demonstrate this for GHC as well.
The operation mapAccumL is not used in the compiler and can't be
implemented efficiently because it requires destroying and rebuilding
the stream.
I removed one use of mapAccumL_ which has similar problems but the other
use was difficult to remove. In the future it may be worth exploring
whether the 'Stream' encoding could be modified further to capture the
mapAccumL pattern, and likewise defer the passing of accumulation
parameter until the stream is finally consumed.
The >>= operation for 'Stream' was a hot-spot in the ticky profile for
the "ManyConstructors" test which called the 'cg' function many times in
"StgToCmm.hs"
Metric Decrease:
ManyConstructors
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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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Some types need a Platform value to be pretty-printed: CLabel, Cmm
types, instructions, etc.
Before this patch they had an Outputable instance and the Platform value
was obtained via sdocWithDynFlags. It meant that the *renderer* of the
SDoc was responsible of passing the appropriate Platform value (e.g. via
the DynFlags given to showSDoc). It put the burden of passing the
Platform value on the renderer while the generator of the SDoc knows the
Platform it is generating the SDoc for and there is no point passing a
different Platform at rendering time.
With this patch, we introduce a new OutputableP class:
class OutputableP a where
pdoc :: Platform -> a -> SDoc
With this class we still have some polymorphism as we have with `ppr`
(i.e. we can use `pdoc` on a variety of types instead of having a
dedicated `pprXXX` function for each XXX type).
One step closer removing `sdocWithDynFlags` (#10143) and supporting
several platforms (#14335).
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- put panic related functions into GHC.Utils.Panic
- put trace related functions using DynFlags in GHC.Driver.Ppr
One step closer making Outputable fully independent of DynFlags.
Bump haddock submodule
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Platform constant wrappers took a DynFlags parameter, hence implicitly
used the target platform constants. We removed them to allow support
for several platforms at once (#14335) and to avoid having to pass
the full DynFlags to every function (#17957).
Metric Decrease:
T4801
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* Remove several uses of `sdocWithDynFlags`, especially in GHC.Llvm.*
* Add LlvmOpts datatype to store Llvm backend options
* Remove Outputable instances (for LlvmVar, LlvmLit, LlvmStatic and
Llvm.MetaExpr) which require LlvmOpts.
* Rename ppMetaExpr into ppMetaAnnotExpr (pprMetaExpr is now used in place of `ppr :: MetaExpr -> SDoc`)
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Update Haddock submodule
Metric Increase:
haddock.compiler
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Remove one use of `sdocWithDynFlags` from `GHC.CmmToLlvm.llvmCodeGen'`
and from `GHC.Driver.CodeOutput.profilingInitCode`
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* SysTools
* Parser
* GHC.Builtin
* GHC.Iface.Recomp
* Settings
Update Haddock submodule
Metric Decrease:
Naperian
parsing001
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In !2959 we noticed that there was some redundant code (in GHC.Cmm.Utils
and GHC.Cmm.StgToCmm.Utils) used to deal with `CmmStatics` datatype
(before SRT generation) and `RawCmmStatics` datatype (after SRT
generation).
This patch removes this redundant code by using a single GADT for
(Raw)CmmStatics.
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submodule updates: nofib, haddock
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