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| author | Simon Marlow <marlowsd@gmail.com> | 2018-04-22 19:34:32 +0100 |
|---|---|---|
| committer | Simon Marlow <marlowsd@gmail.com> | 2018-05-16 13:36:13 +0100 |
| commit | 838b69032566ce6ab3918d70e8d5e098d0bcee02 (patch) | |
| tree | ac764fcb2dc421a13fd76fec1a1d6d01fd0b4f1c /includes/rts | |
| parent | 2b0918c9834be1873728176e4944bec26271234a (diff) | |
| download | haskell-838b69032566ce6ab3918d70e8d5e098d0bcee02.tar.gz | |
Merge FUN_STATIC closure with its SRT
Summary:
The idea here is to save a little code size and some work in the GC,
by collapsing FUN_STATIC closures and their SRTs.
This is (4) in a series; see D4632 for more details.
There's a tradeoff here: more complexity in the compiler in exchange
for a modest code size reduction (probably around 0.5%).
Results:
* GHC binary itself (statically linked) is 1% smaller
* -0.2% binary sizes in nofib (-0.5% module sizes)
Full nofib results comparing D4634 with this: P177 (ignore runtimes,
these aren't stable on my laptop)
Test Plan: validate, nofib
Reviewers: bgamari, niteria, simonpj, erikd
Subscribers: thomie, carter
Differential Revision: https://phabricator.haskell.org/D4637
Diffstat (limited to 'includes/rts')
| -rw-r--r-- | includes/rts/storage/ClosureMacros.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/includes/rts/storage/ClosureMacros.h b/includes/rts/storage/ClosureMacros.h index 7a3ecaa1d2..dcbc95b31b 100644 --- a/includes/rts/storage/ClosureMacros.h +++ b/includes/rts/storage/ClosureMacros.h @@ -172,7 +172,6 @@ INLINE_HEADER StgHalfWord GET_TAG(const StgClosure *con) -------------------------------------------------------------------------- */ /* These are hard-coded. */ -#define FUN_STATIC_LINK(p) (&(p)->payload[0]) #define THUNK_STATIC_LINK(p) (&(p)->payload[1]) #define IND_STATIC_LINK(p) (&(p)->payload[1]) @@ -182,8 +181,6 @@ STATIC_LINK(const StgInfoTable *info, StgClosure *p) switch (info->type) { case THUNK_STATIC: return THUNK_STATIC_LINK(p); - case FUN_STATIC: - return FUN_STATIC_LINK(p); case IND_STATIC: return IND_STATIC_LINK(p); default: |