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* validate: enable -DDEBUG in stage 1 by defaultÖmer Sinan Ağacan2016-02-071-1/+1
| | | | | | | | | | | | | | | | | | Since the whole point of validation is to test the compiler, assertions should be enabled at least for some part of the build. Previously assertions were only enabled (1) in stage 2 compiler (2) when "slow" setting is used. With this patch we enable assertions in stage 1 compiler in all settings, to test them on (1) the compiler itself (2) the libraries, even with the "fast" setting. This will make "fast" setting slower, but the difference should be quite modest - I didn't realize a significant difference in validation times. Reviewers: bgamari, austin, thomie Reviewed By: thomie Differential Revision: https://phabricator.haskell.org/D1890
* Use default xz compression levelBen Gamari2016-02-051-1/+1
| | | | | | -9e is crazy expensive for very little pay-off. See http://smart-cactus.org/~ben/posts/2016-02-04-compression-comparison.html for details.
* Put docs in /usr/share/doc/ghc-<version>Thomas Miedema2016-01-311-7/+4
| | | | | | | | | | | | | | | | | | | | | `make install` puts libraries in a direcory containing the version number. Do the same for the docs, such that multiple installs can live side-by-side. Delete unused ghcdocdir. Test Plan: ``` ./boot ./configure make show! VALUE=docdir ``` Reviewed by: bgamari Differential Revision: https://phabricator.haskell.org/D1868 GHC Trac Issues: #11354
* Test for undef bugs in the LLVM backend when validatingReid Barton2016-01-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | In an attempt to catch bugs involving using undef values, replace undef literals by values likely to cause crashes or test failures. We do this only when validating since it is a deoptimization. This depends on D1857 to catch such bugs in the RTS (such as #11487). Test Plan: Did a build with ``` BuildFlavour = quick-llvm SRC_HC_OPTS_STAGE1 = -fllvm-fill-undef-with-garbage ``` The build crashed when running ghc-stage2, as expected. Reviewers: austin, bgamari Reviewed By: bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D1858
* Enable RemoteGHCi on WindowsTamar Christina2016-01-271-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Makes the needed changes to make RemoteGHCi work on Windows. The approach passes OS Handles areound instead of the Posix Fd as on Linux. The reason is that I could not find any real documentation about the behaviour of Windows w.r.t inheritance and Posix FDs. The implementation with Fd did not seem to be able to find the Fd in the child process. Instead I'm using the much better documented approach of passing inheriting handles. This requires a small modification to the `process` library. https://github.com/haskell/process/pull/52 Test Plan: ./validate On Windows x86_64 Reviewers: thomie, erikd, bgamari, simonmar, austin, hvr Reviewed By: simonmar Subscribers: #ghc_windows_task_force Differential Revision: https://phabricator.haskell.org/D1836 GHC Trac Issues: #11100
* Build profiling libraries on `validate --slow` (#11496)Thomas Miedema2016-01-271-1/+5
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* Ensure that we don't produce code for pre-ARMv7 without barriersBen Gamari2016-01-252-1/+10
| | | | | | | | | | | | | | | | | | | | | | We are unable to produce load/store barriers for pre-ARMv7 targets. Phab:D894 added dummy cases to SMP.h for these barriers to prevent the build from failing under the assumption that there are no SMP-capable devices of this vintage. However, #10433 points out that it is more correct to simply set NOSMP for such targets. Tested By: rwbarton Test Plan: Validate Reviewers: erikd, rwbarton, austin Reviewed By: rwbarton Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D1704 GHC Trac Issues: #10433
* Switch from -this-package-key to -this-unit-id.Edward Z. Yang2016-01-191-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A small cosmetic change, but we have to do a bit of work to actually support it: - Cabal submodule update, so that Cabal passes us -this-unit-id when we ask for it. This includes a Cabal renaming to be consistent with Unit ID, which makes ghc-pkg a bit more scrutable. - Build system is updated to use -this-unit-id rather than -this-package-key, to avoid deprecation warnings. Needs a version test so I resurrected the old test we had (sorry rwbarton!) - I've *undeprecated* -package-name, so that we are in the same state as GHC 7.10, since the "correct" flag will have only entered circulation in GHC 8.0. - I removed -package-key. Since we didn't deprecate -package-id I think this should not cause any problems for users; they can just change their code to use -package-id. - The package database is indexed by UNIT IDs, not component IDs. I updated the naming here. - I dropped the signatures field from ExposedModule; nothing was using it, and instantiatedWith from the package database field. - ghc-pkg was updated to use unit ID nomenclature, I removed the -package-key flags but I decided not to add any new flags for now. Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu> Test Plan: validate Reviewers: austin, hvr, bgamari Reviewed By: bgamari Subscribers: 23Skidoo, thomie, erikd Differential Revision: https://phabricator.haskell.org/D1780
* validate: Use gz compression during bindist checkBen Gamari2016-01-181-1/+1
| | | | | | | | | | | | Test Plan: validate, check that gz is used Reviewers: hvr, austin, thomie Reviewed By: thomie Differential Revision: https://phabricator.haskell.org/D1788 GHC Trac Issues: #11434
* Use XZ compression by defaultBen Gamari2016-01-151-2/+2
| | | | Resolves #11434.
* Typos in docs and commentsGabor Greif2016-01-072-5/+5
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* mk/config.mk.in: drop unused CONF_CC_OPTS for ia64Sergei Trofimovich2016-01-011-4/+0
| | | | | | | There is CONF_CC_OPTS_STAGE$(N) but not CONF_CC_OPTS thus option does not work for a while. Signed-off-by: Sergei Trofimovich <siarheit@google.com>
* Simplify -fcmm-sink handling for Parser.hsHerbert Valerio Riedel2015-12-311-2/+0
| | | | | | As we're requiring GHC >= 7.10 now, the conditional handling introduced in 9e133b9dccec0553c6ec302d6ca0d3bc5eea06c4 for addressing #8182 can be made unconditional, and thus simplify the build-system a little bit.
* Remove ghc-7.8 `-package-name`-compat handlingHerbert Valerio Riedel2015-12-311-2/+0
| | | | | | This code was introduced in 66218d15b7c27a4a38992003bd761f60bae84b1f to use `-package-name` for GHC 7.8, whereas GHC 7.10 needs the new `-this-package-key` flag.
* Drop redundant/explicit `=1` in `-DFOO=1` flagsHerbert Valerio Riedel2015-12-311-3/+3
| | | | | | | | | | | | | | | Quoting the POSIX standard for the `-D` C compiler flag: -D name[=value] Define name as if by a C-language #define directive. If no `=value` is given, a value of 1 shall be used. [...] Removing this explicit `=1` definition from `-D` flags which are used to define boolean macro constants makes the CLI invocation a bit more idiomatic and reduces visual noise in debugging output (flags containing `=`s are additionally put in single-quotes by GHC)
* config.mk.in: Disable stripping by default on ARMBen Gamari2015-12-231-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | The Cortex A8 hardware apparently has a bug which ld.gold will try to correct; however in order to do so it must have unstripped executables lest we see warnings of the form (see #10376, #10464), /usr/bin/ld.gold: warning: cannot scan executable section 1 of ... for Cortex-A8 erratum because it has no mapping symbols. Consequently we disabling stripping by default on this architecture. A bit more discussion about this issue can be found in this [Android issue](http://code.google.com/p/android/issues/detail?id=40794). Test Plan: Try validating on ARM Reviewers: erikd, austin, thomie Reviewed By: austin, thomie Differential Revision: https://phabricator.haskell.org/D1599 GHC Trac Issues: #10376, #10464
* Update binary submodule to final 0.8.0.0 releaseHerbert Valerio Riedel2015-12-201-4/+2
| | | | | | | Also, `binary` now is almost warning free (except for inlinePerformIO deprecation warnings) /cc @kolmodin
* Update time submodule to v1.6 releaseHerbert Valerio Riedel2015-12-201-3/+1
| | | | | | This is the designated release to go with GHC 8.0.1 /cc @AshleyYakeley
* Use `-Wno-tabs` more targettedHerbert Valerio Riedel2015-12-181-10/+3
| | | | | | | So far only `time` (fixed upstream already though) and `xhtml` still require `-Wno-tabs`, so let's apply that warning suppression flag only there. This also updates the haskeline submodule to pull in a tab-fix
* Update containers submodule to v0.5.7.0 releaseHerbert Valerio Riedel2015-12-181-5/+0
| | | | | | | | | This is the designated release to go with GHC 8.0.1 This release doesn't need any warning-suppression flags anymore, so remove those from mk/warnings.mk /cc @foxik
* Suppress warnings when compiling primitive and randomThomas Miedema2015-12-171-0/+5
| | | | | And fix a redundant constraint warning in a test that requires primitive.
* Build system: also put scripts in libexecdir/binThomas Miedema2015-12-171-5/+0
| | | | | | | | | This follows a similar change in 4905b83a2d448c65ccced385343d4e8124548a3b, where binaries are installed in libexecdir/bin instead of libexecdir. This fixes a problem with ghc not able to find ghc-split, when SplitObjs=YES.
* Remove warning-suppression flags for CabalHerbert Valerio Riedel2015-12-171-5/+0
| | | | | | Cabal is currently warning free. So let's drop the `-w`-flags. /cc @dcoutts
* Start using `-W` instead of `-f(no-)warn` in some placesHerbert Valerio Riedel2015-12-161-26/+31
| | | | | | | | | | | | | | | | | | This replaces some occurences of `-f(no-)warn` with the new `-W`-aliases introduced via 2206fa8cdb120932 / #11218, in cases which are guaranteed to be invoked with recent enough GHC (i.e. the stage1+ GHC). After this commit, mostly the compiler and the testsuite remain using `-f(wo-)warn...` because the compiler needs to be bootstrappable with older GHCs, while for the testsuite it's convenient to be able to quickly compare the behavior to older GHCs (which may not support the new flags yet). The compiler-part can be updated to use the new flags once GHC 8.3 development starts. Reviewed By: quchen Differential Revision: https://phabricator.haskell.org/D1637
* Enable non-canonical Monad instance warnings for stage1/2Herbert Valerio Riedel2015-12-051-0/+2
| | | | | | | | | | | | | | This makes use of the new facility introduced via 14d0f7f1221db758cd06a69f53803d9d0150164a which allows to have certain flags passed only to the non-bootstrapping GHC. This is needed because sometimes we can't assume the existence of a certain flag in the bootstrapping compiler which was only added recently to GHC HEAD. This also updates the haddock submodule to fix a few remaining noncanonical instance definitions. Differential Revision: https://phabricator.haskell.org/D1571
* libdw: enable support only on i386 and amd64Sergei Trofimovich2015-12-041-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Currently libdw requires per-arch implementation of set_initial_registers() function. Otherwise build fails with linkage error (seen on sparc): rts/dist/build/libHSrts_thr-ghc7.11.20151129.so: undefined reference to `set_initial_registers' collect2: error: ld returned 1 exit status `gcc' failed in phase `Linker'. (Exit code: 1) make[1]: *** [ghc/stage2/build/tmp/ghc-stage2] Error 1 Converted link-time error to compile-time error, added arch whitelist. Signed-off-by: Sergei Trofimovich <siarheit@google.com> Reviewers: austin, thomie, bgamari Reviewed By: bgamari Differential Revision: https://phabricator.haskell.org/D1567
* Build system: Add stage specific SRC_HC_(WARNING_)OPTSThomas Miedema2015-12-012-18/+75
| | | | | | | | | | | | | | | | | | * Add stage specific versions of SRC_HC_OPTS. These are currently only used for -Werror. The previous combination of GhcStage2HcOpts and GhcLibHcOpts didn't apply to utils/*. * Add stage specific versions of SRC_HC_WARNING_OPTS. These will later be used for new warning supression flags that should not be passed to the bootstrap compiler. * Move -Wall (and -Werror) related code back to mk/warnings.mk, where it was before 987d54274. Now all warning related code is nicely together. Include mk/warnings.mk after mk/custom-settings.mk to make this work. Reviewed By: bgamari, hvr Differential Revision: https://phabricator.haskell.org/D1536
* build.mk.sample: Document meaning of WERRORBen Gamari2015-11-231-1/+2
| | | | | | | | | 31bcf9b62ceaed98bdd3b7605e68d315bcff0c8a changed the behavior of WERROR such that it would only apply to the stage 2 build. The reason for this was to avoid silly redundant imports and such breaking validation on different bootstrap compiler versions. Document the fact that WERROR now only applies to the stage 2 build.
* rts: Kill PAPI supportBen Gamari2015-11-181-6/+0
| | | | | | | | | | | | | | | This hasn't been used for a very long time and will soon be superceded by perf_events support. Test Plan: validate Reviewers: austin, simonmar Reviewed By: austin, simonmar Subscribers: thomie, erikd Differential Revision: https://phabricator.haskell.org/D1493
* Implement function-sections for Haskell code, #8405Simon Brenner2015-11-121-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a flag -split-sections that does similar things to -split-objs, but using sections in single object files instead of relying on the Satanic Splitter and other abominations. This is very similar to the GCC flags -ffunction-sections and -fdata-sections. The --gc-sections linker flag, which allows unused sections to actually be removed, is added to all link commands (if the linker supports it) so that space savings from having base compiled with sections can be realized. Supported both in LLVM and the native code-gen, in theory for all architectures, but really tested on x86 only. In the GHC build, a new SplitSections variable enables -split-sections for relevant parts of the build. Test Plan: validate with both settings of SplitSections Reviewers: dterei, Phyx, austin, simonmar, thomie, bgamari Reviewed By: simonmar, thomie, bgamari Subscribers: hsyl20, erikd, kgardas, thomie Differential Revision: https://phabricator.haskell.org/D1242 GHC Trac Issues: #8405
* Build system: renable -Wall on validate (base)Thomas Miedema2015-11-031-3/+0
| | | | | | | | | | | | | | | | Problem: 'SRC_HC_OPTS += -Wall' in 'mk/warnings.mk' was getting overwritten by 'SRC_HC_OPTS = ...' in 'mk/flavours/*.mk'. It didn't affect the compiler or most other libraries, because most .cabal files define 'ghc-options: -Wall'. Bug introduced in commit 2c24fd707f8650205bb574ffac5f376239af3723, when moving validate settings from 'mk/validate-settings.mk' to 'mk/flavours/validate.mk'. Reviewed By: austin Differential Revision: https://phabricator.haskell.org/D1425
* Testsuite: suggest quoting $(TEST_HC)Thomas Miedema2015-10-301-0/+3
| | | | | | | | | | | | Test Plan: it works Reviewers: bgamari, rwbarton, austin Reviewed By: austin Subscribers: rwbarton Differential Revision: https://phabricator.haskell.org/D1377
* Move win32 tarball download logic to scriptBen Gamari2015-10-301-0/+144
| | | | | | | | | | | | | | | This allows it to be used by users and packagers to grab the tarballs necessary to generate a source tarball. Test Plan: try it Reviewers: thomie, austin, Phyx Reviewed By: thomie, austin, Phyx Subscribers: erikd Differential Revision: https://phabricator.haskell.org/D1378
* Revert "Build system: don't create mk/are-validating.mk"Thomas Miedema2015-10-291-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This reverts commit aecf4a5f96d0d3ffcf4cb2c67a20a610d7c64486. It turns out the Simons are relying on 'mk/are-validating.mk', see D1307. The workflow they are using is: * run ./validate * find a bug in the compiler * try to fix the bug, running 'make 1' (or 'make 2') repeatedly. Because of 'mk/are-validating.mk', this uses the same build settings as validate. * continue ./validate (--no-clean) I suggested two alternatives: A. run 'make 1 Validating=YES' instead of 'make 1' Problem: when running `./validate --fast` or `./validate --hpc` instead of a normal `./validate`, validate sets ValidateSpeed and ValdateHpc in mk/are-validating.mk. You would for example have to run 'make 1 Validating=YES ValidateSpeed=FAST' instead of 'make 1' to get the same build settings as `./validate --fast`, which is entirely too long and error prone. B. uncomment `#BuildFlavour=validate` in mk/build.mk, and include 'mk/validate.mk'. Problems: * any other settings you have in build.mk will also get used. * the distinction between 'mk/validate.mk' and 'mk/build.mk' becomes less clear. * it is easy to forget to include 'mk/validate.mk'. * the build system again doesn't have access to the ValidateSpeed and ValdateHpc settings set by validate. Neither of these two options is entirely satisfactory. Reviewers: austin, bgamari Differential Revision: https://phabricator.haskell.org/D1383
* Libdw: Add libdw-based stack unwindingBen Gamari2015-10-171-0/+3
| | | | | | | | | | | | | | | | | | | | | This adds basic support to the RTS for DWARF-assisted unwinding of the Haskell and C stack via libdw. This only adds the infrastructure; consumers of this functionality will be introduced in future diffs. Currently we are carrying the initial register collection code in Libdw.c but this will eventually make its way upstream to libdw. Test Plan: See future patches Reviewers: Tarrasch, scpmw, austin, simonmar Reviewed By: austin, simonmar Subscribers: simonmar, thomie, erikd Differential Revision: https://phabricator.haskell.org/D1196 GHC Trac Issues: #10656
* Rename PACKAGE_KEY and LIB_NAME in build system.Edward Z. Yang2015-10-141-1/+1
| | | | Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
* Disable man building for most quick build styles.Edward Z. Yang2015-10-0911-0/+11
| | | | Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
* Build system: don't create mk/are-validating.mkThomas Miedema2015-10-041-3/+0
| | | | | | | | | | A `make` build after running `./validate` earlier should use the normal mk/build.mk settings, without having to manually delete the leftover file mk/are-validating or run `make clean` first. Reviewed by: austin Differential Revision: https://phabricator.haskell.org/D1307
* Build system: add mk/validate.mk.sampleThomas Miedema2015-10-031-0/+4
| | | | | | | | | | Reviewers: austin, bgamari Subscribers: erikd Differential Revision: https://phabricator.haskell.org/D1303 modified: configure.ac
* Move user's guide to ReStructuredTextBen Gamari2015-10-0315-57/+50
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* Build system: cleanup BUILD_DIRS + add lots of NotesThomas Miedema2015-09-081-1/+53
| | | | | | | | | | | | | | | | | | | | | | | Summary: See Note [CrossCompiling vs Stage1Only] in mk/config.mk.in. See Note [Stage1Only vs stage=1] in mk/config.mk.in. See Note [No stage2 packages when CrossCompiling or Stage1Only]. Also: * use stage2 to build mkUserGuidePart, as was probably intended. Now the following represent the same set of packages: - packages that we build with ghc-stage2 - packages that depend on the ghc library Those packages are: haddock, mkUserGuidePart and ghctags. * don't let utils that don't depend on the ghc library depend on its package-data.mk file. Instead, let those utils directly depend on the package-data.mk files of the stage1 packages. Not sure if it improves anything, but I found it easier to explain what's going on this way. (partially) reviewed by: austin Differential Revision: https://phabricator.haskell.org/D1218
* Build system: make *-cross BuildFlavours consistent (#10223)Thomas Miedema2015-09-082-4/+4
| | | | | | | | | | | | | | | | | | This is a follow up to 841924c9587c10488a18e307b573720977bf4f13, where `-fllvm` was explicitly removed from GhcStage1HcOpts for perf-cross. After removing -fllvm from GhcStage1HcOpts, it should be removed from SRC_HC_OPTS as well, because SRC_HC_OPTS are added to every Haskell compilation. That's what this patch does. BuildFlavour bench-cross (added in ddf79ebf69fe4a6e69d69d451a6040a53b1ea12c), is probably never used. But for consistency, also use -fllvm here, for building stage2 and the libraries. Reviewed by: austin Differential Revision: https://phabricator.haskell.org/D1228
* Build system: delete the InstallExtraPackages variableThomas Miedema2015-09-082-11/+8
| | | | | | | | | | | | | | Just install all packages that are built. Don't make an exception for the dph and extra packages. You can control whether the dph and extra packages should be build using the variables BUILD_DPH and BUILD_EXTRA_PKGS. These variables didn't exist before. But now that they do, InstallExtraPackages isn't really needed anymore. Reviewed by: austin Differential Revision: https://phabricator.haskell.org/D1227
* Build system: simplify *-llvm BuildFlavours (#10223)Thomas Miedema2015-09-073-9/+9
| | | | | | | | | | | | | Note that SRC_HC_OPTS are added to every Haskell compilation. So there isn't any need to also add `-fllvm` to GhcStage1HcOpts, GhcStage2HcOpts and GhcLibHcOpts. Small bug fix: make sure we test for -fllvm in SRC_HC_OPTS, to check whether the bootstrap compiler is affected by bug #9439. Reviewed by: austin Differential Revision: https://phabricator.haskell.org/D1188
* Build system: put each BuildFlavour in a separate file (#10223)Thomas Miedema2015-09-0717-294/+207
| | | | | | | | | This allows easier diffing of different BuildFlavours, including `mk/flavours/validate.mk`. Reviewed By: bgamari, austin Differential Revision: https://phabricator.haskell.org/D1050
* Build system: simplify install.mk.inThomas Miedema2015-08-211-15/+9
| | | | | | | | | | This will allow fixing #1851 more easily ("make install-strip" should work). This reverts 57e2a81c589103b50da80a9e378b1a11285bd521: "On Cygwin, use a Cygwin-style path for /bin/install's destination" Update submodule haddock and hsc2hs.
* Build system: delete half-baked Cygwin supportThomas Miedema2015-08-203-33/+4
| | | | | | | | | | | | | | | | | | | We only support building GHC on mys2 nowadays, see https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Windows. This (partially) reverts various commits from a few years ago, among which: * 5775d5142da227d65fb86994d363eb16841ee642 "Add OSTYPE build-system variable, and use it" * 3fb8c431824aa2f3bd979e35d1a283546fcfbe74 "Fix building libgmp on cygwin" * cdbb4720c424500adb57cbbef69721d0b039fa46 "Fix cmd invocation by libffi cuild system on Windows 7 cygwin" * e8121501ee3549a35e954726ccfd871ac9d51f83 "Fix dblatex and xml* tool detection on Windows" Reviewed by: austin, Phyx Differential Revision: https://phabricator.haskell.org/D1155
* Update parallel submodule, and re-enable warningsSimon Marlow2015-08-031-1/+0
| | | | | | | | | | | | Test Plan: using remote validate Reviewers: austin, hvr, simonpj, bgamari Reviewed By: bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D1117
* The parallel package has warningsSimon Peyton Jones2015-07-301-0/+1
| | | | | | | | | | | | | | | | | | | This patch suppresses them until they are fixed libraries/parallel/Control/Parallel/Strategies.hs:513:2: warning: Rule "parList/rseq" may never fire because ‘rseq’ might inline first Probable fix: add an INLINE[n] or NOINLINE[n] pragma for ‘rseq’ libraries/parallel/Control/Parallel/Strategies.hs:582:1: warning: Rule "evalBuffer/rseq" may never fire because ‘rseq’ might inline first Probable fix: add an INLINE[n] or NOINLINE[n] pragma for ‘rseq’ libraries/parallel/Control/Parallel/Strategies.hs:583:1: warning: Rule "parBuffer/rseq" may never fire because ‘rseq’ might inline first Probable fix: add an INLINE[n] or NOINLINE[n] pragma for ‘rseq’
* Fallout from more assiduous RULE warningsSimon Peyton Jones2015-07-281-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | GHC now warns if rules compete, so that it's not predicatable which will work and which will not. E.g. {-# RULES f (g x) = ... g True = ... #-} If we had (f (g True)) it's not clear which rule would fire. This showed up fraility in the libraries. * Suppress warnigns in Control.Arrow, Control.Category for class methods. At the moment we simply don't have a good way to write a RULE with a class method in the LHS. See Trac #1595. Arrow and Category attempt to do so; I have silenced the complaints with -fno-warn-inline-rule-shadowing, but it's not a great solution. * Adjust the NOINLINE pragma on 'GHC.Base.map' to account for the map/coerce rule * Adjust the rewrite rules in Enum, especially for the "literal 1" case. See Note [Enum Integer rules for literal 1]. * Suppress warnings for 'bytestring' e.g. libraries/bytestring/Data/ByteString.hs:895:1: warning: Rule "ByteString specialise break (x==)" may never fire because rule "Class op ==" for ‘==’ might fire first Probable fix: add phase [n] or [~n] to the competing rule
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