[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 5 commits: rts: Check for program_invocation_short_name via autoconf

Marge Bot (@marge-bot) gitlab at gitlab.haskell.org
Fri Nov 11 21:21:32 UTC 2022 


Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC


Commits:
430eccef by Ben Gamari at 2022-11-11T13:16:45-05:00
rts: Check for program_invocation_short_name via autoconf

Instead of assuming support on all Linuxes.

- - - - -
6dab0046 by Matthew Pickering at 2022-11-11T13:17:22-05:00
driver: Fix -fdefer-diagnostics flag

The `withDeferredDiagnostics` wrapper wasn't doing anything because the
session it was modifying wasn't used in hsc_env. Therefore the fix is
simple, just push the `getSession` call into the scope of
`withDeferredDiagnostics`.

Fixes #22391

- - - - -
d0c691b6 by Simon Peyton Jones at 2022-11-11T13:18:07-05:00
Add a fast path for data constructor workers

See Note [Fast path for data constructors] in
GHC.Core.Opt.Simplify.Iteration

This bypasses lots of expensive logic, in the special case of
applications of data constructors.  It is a surprisingly worthwhile
improvement, as you can see in the figures below.

Metrics: compile_time/bytes allocated
------------------------------------------------
          CoOpt_Read(normal)   -2.0%
    CoOpt_Singletons(normal)   -2.0%
    ManyConstructors(normal)   -1.3%
              T10421(normal)   -1.9% GOOD
             T10421a(normal)   -1.5%
              T10858(normal)   -1.6%
              T11545(normal)   -1.7%
              T12234(optasm)   -1.3%
              T12425(optasm)   -1.9% GOOD
              T13035(normal)   -1.0% GOOD
              T13056(optasm)   -1.8%
              T13253(normal)   -3.3% GOOD
              T15164(normal)   -1.7%
              T15304(normal)   -3.4%
              T15630(normal)   -2.8%
              T16577(normal)   -4.3% GOOD
              T17096(normal)   -1.1%
              T17516(normal)   -3.1%
              T18282(normal)   -1.9%
              T18304(normal)   -1.2%
             T18698a(normal)   -1.2% GOOD
             T18698b(normal)   -1.5% GOOD
              T18923(normal)   -1.3%
               T1969(normal)   -1.3% GOOD
              T19695(normal)   -4.4% GOOD
             T21839c(normal)   -2.7% GOOD
             T21839r(normal)   -2.7% GOOD
               T4801(normal)   -3.8% GOOD
               T5642(normal)   -3.1% GOOD
               T6048(optasm)   -2.5% GOOD
               T9020(optasm)   -2.7% GOOD
               T9630(normal)   -2.1% GOOD
               T9961(normal)  -11.7% GOOD
               WWRec(normal)   -1.0%

                   geo. mean   -1.1%
                   minimum    -11.7%
                   maximum     +0.1%

Metric Decrease:
    T10421
    T12425
    T13035
    T13253
    T16577
    T18698a
    T18698b
    T1969
    T19695
    T21839c
    T21839r
    T4801
    T5642
    T6048
    T9020
    T9630
    T9961

- - - - -
3c37d30b by Krzysztof Gogolewski at 2022-11-11T19:18:39+01:00
Use a more efficient printer for code generation (#21853)

The changes in `GHC.Utils.Outputable` are the bulk of the patch
and drive the rest.
The types `HLine` and `HDoc` in Outputable can be used instead of `SDoc`
and support printing directly to a handle with `bPutHDoc`.
See Note [SDoc versus HDoc] and Note [HLine versus HDoc].

The classes `IsLine` and `IsDoc` are used to make the existing code polymorphic
over `HLine`/`HDoc` and `SDoc`. This is done for X86, PPC, AArch64, DWARF
and dependencies (printing module names, labels etc.).

Co-authored-by: Alexis King <lexi.lambda at gmail.com>

Metric Decrease:
    CoOpt_Read
    ManyAlternatives
    ManyConstructors
    T10421
    T12425
    T12707
    T13035
    T13056
    T13253
    T13379
    T18140
    T18282
    T18698a
    T18698b
    T1969
    T20049
    T21839c
    T21839r
    T3064
    T3294
    T4801
    T5321FD
    T5321Fun
    T5631
    T6048
    T783
    T9198
    T9233

- - - - -
a84d242f by Matthew Craven at 2022-11-11T16:21:26-05:00
Weaken wrinkle 1 of Note [Scrutinee Constant Folding]

Fixes #22375.

Co-authored-by:  Simon Peyton Jones <simon.peytonjones at gmail.com>

- - - - -


30 changed files:

- compiler/GHC/Builtin/PrimOps.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/Cmm/CLabel.hs-boot
- compiler/GHC/Cmm/DebugBlock.hs
- compiler/GHC/Cmm/Reg.hs
- compiler/GHC/CmmToAsm.hs
- compiler/GHC/CmmToAsm/AArch64.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/Dwarf.hs
- compiler/GHC/CmmToAsm/Dwarf/Constants.hs
- compiler/GHC/CmmToAsm/Dwarf/Types.hs
- compiler/GHC/CmmToAsm/Instr.hs
- compiler/GHC/CmmToAsm/Monad.hs
- compiler/GHC/CmmToAsm/PIC.hs
- compiler/GHC/CmmToAsm/PPC.hs
- compiler/GHC/CmmToAsm/PPC/CodeGen.hs
- compiler/GHC/CmmToAsm/PPC/Instr.hs
- compiler/GHC/CmmToAsm/PPC/Ppr.hs
- compiler/GHC/CmmToAsm/Ppr.hs
- compiler/GHC/CmmToAsm/X86.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Instr.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Linker/Types.hs
- compiler/GHC/Types/CostCentre.hs
- compiler/GHC/Types/ForeignStubs.hs


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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/94aa0db1f2a930bfadb50e09f6930cc708d5c523...a84d242f8d398c93d515172cb75b1bc4fc661321

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