Fix Issue 22861 - build the compiler with PGO #13900
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This introduces a new target to build.d, dmd-pgo, which will build a dmd with PGO instrumentation, then run either the phobos or dmd testsuite (both are present in the source code, only the dmd one is set to run at the moment). This data is then merged, at which point the data is used to build a release + LTO build of dmd. This resulting build is significantly faster - on the order of 45% on some programs. Making the release scripts use the PGO build may require further changes.
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Thanks for your pull request, @ibuclaw! Bugzilla references
Testing this PR locallyIf you don't have a local development environment setup, you can use Digger to test this PR: dub run digger -- build "master + dmd#13900" |
maxhaton
approved these changes
Mar 27, 2022
thewilsonator
approved these changes
Mar 27, 2022
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This introduces a new target to build.d, dmd-pgo, which will build a dmd with PGO
instrumentation, then run either the phobos or dmd testsuite (both are present in the
source code, only the dmd one is set to run at the moment). This data is then merged,
at which point the data is used to build a release + LTO build of dmd.
This resulting build is significantly faster - on the order of 45% on some programs.
Making the release scripts use the PGO build may require further changes.