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| author | Simon Marlow <marlowsd@gmail.com> | 2012-10-26 11:12:49 +0100 |
|---|---|---|
| committer | Simon Marlow <marlowsd@gmail.com> | 2012-11-01 10:13:17 +0000 |
| commit | 3a6b1bfb08602a8193b0025f0fe47ec8ddf8dad2 (patch) | |
| tree | e56ceda94fb405c856489d5df44853ca514be687 /mk | |
| parent | ee43ad528d57f0b31f47e56afdf5211141780239 (diff) | |
| download | haskell-3a6b1bfb08602a8193b0025f0fe47ec8ddf8dad2.tar.gz | |
Turn on -O2 for the RTS by default
Optimisation now makes a difference when compiling .cmm code, because
it enables the optimisation passes in CmmPipeline. Recently validate
has not been optimising the .cmm code because it uses SRC_HC_OPTS=-O0,
which explains why I couldn't reproduce #7366 in validate (the bug
miscompiled rts/PrimOps.cmm).
Diffstat (limited to 'mk')
| -rw-r--r-- | mk/config.mk.in | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/mk/config.mk.in b/mk/config.mk.in index a906d25fdf..f8d4d6a95f 100644 --- a/mk/config.mk.in +++ b/mk/config.mk.in @@ -360,9 +360,11 @@ LAX_DEPENDENCIES = NO # ---------------------------------------------------------------------------- # Options for GHC's RTS -# For an optimised RTS (you probably don't want to change these; we build -# a debugging RTS by default now. Use -debug to get it). -GhcRtsHcOpts=-optc-O2 +# Build an optimised RTS. Remember that we need to turn on +# optimisation both for C code (-optc-O2) and .cmm code (-O2). For +# the debugging RTS flavour, rts/ghc.mk overrides these to turn off +# optimisation. +GhcRtsHcOpts=-optc-O2 -O2 GhcRtsCcOpts=-fomit-frame-pointer # Include the front panel code? Needs GTK+. |