[Git][ghc/ghc][wip/T24515] 9 commits: base: Reflect new era profiling RTS flags in GHC.RTS.Flags

Thu Mar 7 04:44:37 UTC 2024

Ben Gamari pushed to branch wip/T24515 at Glasgow Haskell Compiler / GHC

Commits:
4074a3f2 by Matthew Pickering at 2024-03-05T21:44:35-05:00
base: Reflect new era profiling RTS flags in GHC.RTS.Flags

* -he profiling mode
* -he profiling selector
* --automatic-era-increment

CLC proposal #254 - https://github.com/haskell/core-libraries-committee/issues/254

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a8c0e31b by Sylvain Henry at 2024-03-05T21:45:14-05:00
JS: faster implementation for some numeric primitives (#23597)

Use faster implementations for the following primitives in the JS
backend by not using JavaScript's BigInt:
- plusInt64
- minusInt64
- minusWord64
- timesWord64
- timesInt64

Co-authored-by: Josh Meredith <joshmeredith2008 at gmail.com>

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21e3f325 by Cheng Shao at 2024-03-05T21:45:52-05:00
rts: add -xr option to control two step allocator reserved space size

This patch adds a -xr RTS option to control the size of virtual memory
address space reserved by the two step allocator on a 64-bit platform,
see added documentation for explanation. Closes #24498.

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dedcf102 by Cheng Shao at 2024-03-06T13:39:04-05:00
rts: expose HeapAlloc.h as public header

This commit exposes HeapAlloc.h as a public header. The intention is
to expose HEAP_ALLOCED/HEAP_ALLOCED_GC, so they can be used in
assertions in other public headers, and they may also be useful for
user code.

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d19441d7 by Cheng Shao at 2024-03-06T13:39:04-05:00
rts: assert pointer is indeed heap allocated in Bdescr()

This commit adds an assertion to Bdescr() to assert the pointer is
indeed heap allocated. This is useful to rule out RTS bugs that
attempt to access non-existent block descriptor of a static closure, #24492
being one such example.

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9a656a04 by Ben Gamari at 2024-03-06T13:39:39-05:00
ghc-experimental: Add dummy dependencies to work around #23942

This is a temporary measure to improve CI reliability until a proper
solution is developed.

Works around #23942.

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1e84b924 by Simon Peyton Jones at 2024-03-06T13:39:39-05:00
Three compile perf improvements with deep nesting

These were changes are all triggered by #24471.

1. Make GHC.Core.Opt.SetLevels.lvlMFE behave better when there are
   many free variables.  See Note [Large free-variable sets].

2. Make GHC.Core.Opt.Arity.floatIn a bit lazier in its Cost argument.
   This benefits the common case where the ArityType turns out to
   be nullary. See Note [Care with nested expressions]

3. Make GHC.CoreToStg.Prep.cpeArg behave for deeply-nested
   expressions.  See Note [Eta expansion of arguments in CorePrep]
   wrinkle (EA2).

Compile times go down by up to 4.5%, and much more in artificial
cases. (Geo mean of compiler/perf changes is -0.4%.)

Metric Decrease:
    CoOpt_Read
    T10421
    T12425

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c4b13113 by Hécate Moonlight at 2024-03-06T13:40:17-05:00
Use "module" instead of "library" when applicable in base haddocks

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82e0d401 by Ben Gamari at 2024-03-06T23:44:33-05:00
rts: Drop .wasm suffix from .prof file names

This replicates the behavior on Windows, where `Hi.exe` will produce
profiling output named `Hi.prof` instead of `Hi.exe.prof`.

While in the area I also fixed the extension-stripping logic, which
incorrectly rewrote `Hi.exefoo` to `Hi.foo`.

- - - - -

30 changed files:

- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/SetLevels.hs
- compiler/GHC/CoreToStg/Prep.hs
- docs/users_guide/9.10.1-notes.rst
- docs/users_guide/runtime_control.rst
- libraries/base/changelog.md
- libraries/base/src/Control/Concurrent.hs
- libraries/base/src/Control/Monad.hs
- libraries/base/src/Control/Monad/ST.hs
- libraries/base/src/Control/Monad/ST/Safe.hs
- libraries/base/src/Control/Monad/ST/Unsafe.hs
- libraries/base/src/Data/Version.hs
- libraries/base/src/GHC/IO/Encoding/UTF16.hs
- libraries/base/src/GHC/TypeNats.hs
- libraries/base/src/System/Console/GetOpt.hs
- libraries/base/src/System/IO.hs
- libraries/base/src/System/Mem/Weak.hs
- libraries/base/src/System/Posix/Internals.hs
- libraries/base/src/Text/ParserCombinators/ReadP.hs
- libraries/base/src/Text/ParserCombinators/ReadPrec.hs
- libraries/base/src/Text/Read.hs
- libraries/ghc-experimental/src/Data/Sum/Experimental.hs
- libraries/ghc-experimental/src/Data/Tuple/Experimental.hs
- libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc
- rts/ProfHeap.c
- rts/Profiling.c
- rts/RtsFlags.c
- rts/RtsUtils.c
- rts/RtsUtils.h
- rts/Sparks.c

The diff was not included because it is too large.

View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/e8fc51acfc7fb78d756e9e92e683ce70305f1466...82e0d401abbd8e0e550daa10a506ff00adbaa001

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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/e8fc51acfc7fb78d756e9e92e683ce70305f1466...82e0d401abbd8e0e550daa10a506ff00adbaa001
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