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* Change `-fprof-late` to insert cost centres after unfolding creation.Andreas Klebinger2022-08-061-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | The former behaviour of adding cost centres after optimization but before unfoldings are created is not available via the flag `prof-late-inline` instead. I also reduced the overhead of -fprof-late* by pushing the cost centres into lambdas. This means the cost centres will only account for execution of functions and not their partial application. Further I made LATE_CC cost centres it's own CC flavour so they now won't clash with user defined ones if a user uses the same string for a custom scc. LateCC: Don't put cost centres inside constructor workers. With -fprof-late they are rarely useful as the worker is usually inlined. Even if the worker is not inlined or we use -fprof-late-linline they are generally not helpful but bloat compile and run time significantly. So we just don't add sccs inside constructor workers. ------------------------- Metric Decrease: T13701 -------------------------
* Rename -fprof-late-ccs to -fprof-lateAndreas Klebinger2022-03-121-2/+2
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* Add late cost centre supportAndreas Klebinger2022-02-101-0/+2
| | | | | This allows cost centres to be inserted after the core optimization pipeline has run.
* CorePrep: Don't try to wrap partial applications of primops in profiling ticks.Andreas Klebinger2022-01-261-1/+1
| | | | This fixes #20938.
* Add test for #20938.Andreas Klebinger2022-01-141-0/+1
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* testsuite: Clean up dynlib support predicatesBen Gamari2021-10-121-2/+1
| | | | | | | | | | | | | | | | | | Previously it was unclear whether req_shared_libs should require: * that the platform supports dynamic library loading, * that GHC supports dynamic linking of Haskell code, or * that the dyn way libraries were built Clarify by splitting the predicate into two: * `req_dynamic_lib_support` demands that the platform support dynamic linking * `req_dynamic_hs` demands that the GHC support dynamic linking of Haskell code on the target platform Naturally `req_dynamic_hs` cannot be true unless `req_dynamic_lib_support` is also true.
* testsuite: Mark T14931 as requiring dynamic linkingBen Gamari2021-10-121-1/+1
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* profiling: Look in RHS of rules for cost centre ticksMatthew Pickering2021-06-161-0/+1
| | | | | | | | | | | | | | There are some obscure situations where the RHS of a rule can contain a tick which is not mentioned anywhere else in the program. If this happens you end up with an obscure linker error. The solution is quite simple, traverse the RHS of rules to also look for ticks. It turned out to be easier to implement if the traversal was moved into CoreTidy rather than at the start of code generation because there we still had easy access to the rules. ./StreamD.o(.text+0x1b9f2): error: undefined reference to 'StreamK_mkStreamFromStream_HPC_cc' ./MArray.o(.text+0xbe83): error: undefined reference to 'StreamK_mkStreamFromStream_HPC_cc' Main.o(.text+0x6fdb): error: undefined reference to 'StreamK_mkStreamFromStream_HPC_cc'
* testsuite: Skip T14931 on WindowsBen Gamari2019-11-091-1/+3
| | | | This test uses -dynamic-too, which is not supported on Windows.
* testsuite: Use makefile_testBen Gamari2019-01-301-1/+1
| | | | | This eliminates most uses of run_command in the testsuite in favor of the more structured makefile_test.
* Revert "Batch merge"Ben Gamari2019-01-301-1/+1
| | | | This reverts commit 76c8fd674435a652c75a96c85abbf26f1f221876.
* Batch mergeBen Gamari2019-01-301-1/+1
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* Preserve join-point arity in CoreOptSimon Peyton Jones2018-05-011-1/+1
| | | | | | | | Trac #15108 showed that the simple optimiser in CoreOpt was accidentally eta-reducing a join point, so it didn't meet its arity invariant. This patch fixes it. See Note [Preserve join-binding arity].
* Add test case for #15108Joachim Breitner2018-04-301-0/+1
| | | | thanks to cdisselkoen for the nicely minimized test case.
* testsuite: Add test for #14931Ben Gamari2018-03-251-0/+1
| | | | | | | | | | | | Reviewers: alpmestan Reviewed By: alpmestan Subscribers: rwbarton, thomie, carter GHC Trac Issues: #14931 Differential Revision: https://phabricator.haskell.org/D4518
* Add regression test for #12790Ryan Scott2018-03-021-0/+1
| | | | | | | | | | | | | | Test Plan: make test TEST=T12790 Reviewers: bgamari, mpickering Reviewed By: mpickering Subscribers: mpickering, dfeuer, rwbarton, thomie, carter GHC Trac Issues: #12790 Differential Revision: https://phabricator.haskell.org/D4412
* Collect CCs in CorePrep, including CCs in unfoldingsÖmer Sinan Ağacan2018-02-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch includes two changes: 1. Move cost centre collection from `SCCfinal` to `CorePrep`, to be able to collect cost centres in unfoldings. `CorePrep` drops unfoldings, so that's the latest stage in the compilation pipeline for this. After this change `SCCfinal` no longer collects all cost centres, but it still generates & collects CAF cost centres + updates cost centre stacks of `StgRhsClosure` and `StgRhsCon`s. This fixes #5889. 2. Initialize cost centre stack fields of `StgRhs` in `coreToStg`. With this we no longer need to update cost centre stack fields in `SCCfinal`, so that module is removed. Cost centre initialization explained in Note [Cost-centre initialization plan]. Because with -fcaf-all we need to attach a new cost-centre to each CAF, `coreTopBindToStg` now returns `CollectedCCs`. Test Plan: validate Reviewers: simonpj, bgamari, simonmar Reviewed By: simonpj, bgamari Subscribers: rwbarton, thomie, carter GHC Trac Issues: #5889 Differential Revision: https://phabricator.haskell.org/D4325
* testsuite: Add test for #5889Douglas Wilson2017-11-091-2/+1
| | | | | | | | | | | | | | Test Plan: make test TEST=5889 Reviewers: austin, bgamari Reviewed By: bgamari Subscribers: rwbarton, thomie GHC Trac Issues: #5889 Differential Revision: https://phabricator.haskell.org/D4158
* Fix: #12084 deprecate old profiling flagsSeraphime Kirkovski2016-05-241-3/+3
| | | | | | | | | | | | | | | | | | | | Change help message so it doesn't specify -auto-all. Make old profiling flags deprecated as they are no longer documented. Update Makefile and documentation accordingly. Update release notes for ghc 8.2 Test Plan: ./verify; `ghc --help` shouldn't specify the -auto-all flag. Furthermore `ghc -fprof -auto-all` should emit a warning Reviewed By: thomie, austin Differential Revision: https://phabricator.haskell.org/D2257 GHC Trac Issues: #12084 Update submodule nofib
* Remove uses of compose(s) in tests, and change how composition is handledIan Lynagh2013-02-141-3/+3
| | | | The driver now also supports nested lists of setup functions
* Rename some numeric tests: nnnn -> TnnnnIan Lynagh2013-01-251-1/+1
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* Move tests from tests/ghc-regress/* to just tests/*David Terei2011-07-201-0/+8
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