Improve performance of deriving Show
Significantly improves performance of deriving Show instances by
avoiding using the very polymorphic `.` operator in favour of inlining
its definition. We were generating tons of applications of it, each
which had 3 type arguments!
Improves on #9557
-------------------------
Metric Decrease:
InstanceMatching
T12707
T3294
------------------------
Showing
- compiler/GHC/Hs/Utils.hs 5 additions, 1 deletioncompiler/GHC/Hs/Utils.hs
- compiler/GHC/Tc/Deriv/Generate.hs 10 additions, 9 deletionscompiler/GHC/Tc/Deriv/Generate.hs
- testsuite/tests/deriving/should_compile/T14682.stderr 7 additions, 6 deletionstestsuite/tests/deriving/should_compile/T14682.stderr
- testsuite/tests/deriving/should_run/T9576.stderr 4 additions, 4 deletionstestsuite/tests/deriving/should_run/T9576.stderr
- testsuite/tests/typecheck/should_fail/T15883d.stderr 5 additions, 5 deletionstestsuite/tests/typecheck/should_fail/T15883d.stderr
Loading
Please register or sign in to comment