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| author | Sven Tennie <sven.tennie@gmail.com> | 2021-05-13 15:26:32 +0200 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2021-08-11 18:14:30 -0400 |
| commit | f5fdace5613914724eb00bcf7547c82f3ad12686 (patch) | |
| tree | eeaeb36a5b79192c19eed847a2663e13fbf8b1f8 /compiler/GHC/StgToCmm | |
| parent | c65a7ffa7d8962f769bfe1dfbad20e32e1709c20 (diff) | |
| download | haskell-f5fdace5613914724eb00bcf7547c82f3ad12686.tar.gz | |
Optimize Info Table Provenance Entries (IPEs) Map creation and lookup
Using a hash map reduces the complexity of lookupIPE(), making it non linear.
On registration each IPE list is added to a temporary IPE lists buffer, reducing
registration time. The hash map is built lazily on first lookup.
IPE event output to stderr is added with tests.
For details, please see
Note [The Info Table Provenance Entry (IPE) Map].
A performance test for IPE registration and lookup can be found here:
https://gitlab.haskell.org/ghc/ghc/-/merge_requests/5724#note_370806
Diffstat (limited to 'compiler/GHC/StgToCmm')
| -rw-r--r-- | compiler/GHC/StgToCmm/Prof.hs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/GHC/StgToCmm/Prof.hs b/compiler/GHC/StgToCmm/Prof.hs index 08a06f3242..58fdfeafd9 100644 --- a/compiler/GHC/StgToCmm/Prof.hs +++ b/compiler/GHC/StgToCmm/Prof.hs @@ -288,7 +288,7 @@ initInfoTableProv infos itmap this_mod --pprTraceM "initInfoTable" (ppr (length ents)) -- Output the actual IPE data mapM_ emitInfoTableProv ents - -- Create the C stub which initialises the IPE_LIST + -- Create the C stub which initialises the IPE map return (ipInitCode dflags this_mod ents) --- Info Table Prov stuff |