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| author | Peter Wortmann <scpmw@leeds.ac.uk> | 2014-10-14 23:11:43 +0200 |
|---|---|---|
| committer | Austin Seipp <austin@well-typed.com> | 2014-12-16 15:02:28 -0600 |
| commit | 7ceaf96fde63bd45dfc1e08a975cba0ee280eb7b (patch) | |
| tree | cf7c4b7c3c062ed751aabc563ae2ccc149a6820b /compiler/coreSyn | |
| parent | a0895fcb8c47949aac2c5e4a509d69de57582e76 (diff) | |
| download | haskell-7ceaf96fde63bd45dfc1e08a975cba0ee280eb7b.tar.gz | |
Source notes (Cmm support)
This patch adds CmmTick nodes to Cmm code. This is relatively
straight-forward, but also not very useful, as many blocks will simply
end up with no annotations whatosever.
Notes:
* We use this design over, say, putting ticks into the entry node of all
blocks, as it seems to work better alongside existing optimisations.
Now granted, the reason for this is that currently GHC's main Cmm
optimisations seem to mainly reorganize and merge code, so this might
change in the future.
* We have the Cmm parser generate a few source notes as well. This is
relatively easy to do - worst part is that it complicates the CmmParse
implementation a bit.
(From Phabricator D169)
Diffstat (limited to 'compiler/coreSyn')
| -rw-r--r-- | compiler/coreSyn/CoreSyn.hs | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/compiler/coreSyn/CoreSyn.hs b/compiler/coreSyn/CoreSyn.hs index 0e9d9a2b52..5a399da164 100644 --- a/compiler/coreSyn/CoreSyn.hs +++ b/compiler/coreSyn/CoreSyn.hs @@ -494,7 +494,6 @@ data Tickish id = deriving (Eq, Ord, Data, Typeable) - -- | A "counting tick" (where tickishCounts is True) is one that -- counts evaluations in some way. We cannot discard a counting tick, -- and the compiler should preserve the number of counting ticks as |