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| author | Joachim Breitner <mail@joachim-breitner.de> | 2017-09-10 16:10:37 +0100 |
|---|---|---|
| committer | Joachim Breitner <mail@joachim-breitner.de> | 2017-09-12 11:01:10 -0400 |
| commit | fe04f3783b662c52c4a0ff36b2d62a7a575998a5 (patch) | |
| tree | 3a49d515bc700562621bb0d97a74a89bd0d174fb /compiler/stranal/WorkWrap.hs | |
| parent | fe35b85a8cc72582e0f98a3059be00a9a2318a4a (diff) | |
| download | haskell-fe04f3783b662c52c4a0ff36b2d62a7a575998a5.tar.gz | |
Allow CSE'ing of work-wrapped bindings (#14186)
the worker/wrapper creates an artificial INLINE pragma, which caused CSE
to not do its work. We now recognize such artificial pragmas by using
`NoUserInline` instead of `Inline` as the `InlineSpec`.
Differential Revision: https://phabricator.haskell.org/D3939
Diffstat (limited to 'compiler/stranal/WorkWrap.hs')
| -rw-r--r-- | compiler/stranal/WorkWrap.hs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/compiler/stranal/WorkWrap.hs b/compiler/stranal/WorkWrap.hs index 9d741f5f4c..630ec11442 100644 --- a/compiler/stranal/WorkWrap.hs +++ b/compiler/stranal/WorkWrap.hs @@ -374,6 +374,10 @@ it appears in the first place in the defining module. At one stage I tried making the wrapper inlining always-active, and that had a very bad effect on nofib/imaginary/x2n1; a wrapper was inlined before the specialisation fired. + +The use an inl_inline of NoUserInline to distinguish this pragma from one +that was given by the user. In particular, CSE will not happen if there is a +user-specified pragma, but should happen for w/w’ed things (#14186). -} tryWW :: DynFlags @@ -521,7 +525,7 @@ splitFun dflags fam_envs fn_id fn_info wrap_dmds res_info rhs wrap_act = ActiveAfter NoSourceText 0 wrap_rhs = wrap_fn work_id wrap_prag = InlinePragma { inl_src = SourceText "{-# INLINE" - , inl_inline = Inline + , inl_inline = NoUserInline , inl_sat = Nothing , inl_act = wrap_act , inl_rule = rule_match_info } |