From 321743a1c99f9815ce7ea4855474ca6408188de1 Mon Sep 17 00:00:00 2001 From: simonmar Date: Thu, 23 Aug 2001 08:54:45 +0000 Subject: [PATCH] [project @ 2001-08-23 08:54:45 by simonmar] Put a big flashing warning sign next to the description of -O2-for-C, and don't endorse it by claiming that we actually use it (we don't). --- ghc/docs/users_guide/using.sgml | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/ghc/docs/users_guide/using.sgml b/ghc/docs/users_guide/using.sgml index 09c86a3..58f59be 100644 --- a/ghc/docs/users_guide/using.sgml +++ b/ghc/docs/users_guide/using.sgml @@ -1185,6 +1185,12 @@ f "2" = 2 be worth a few percent in execution speed. Don't forget , lest you use the native-code generator and bypass GCC altogether! + + Note: some versions of gcc are known to + have code generation bugs with . Use + this option at your own risk! But we'd be keen to here + any reports of whether (a) it works or (b) it improves + performance at all. @@ -1215,8 +1221,8 @@ f "2" = 2 We don't use a flag for day-to-day work. We use to get respectable speed; e.g., when we want to measure something. When we want to go for - broke, we tend to use (and - we go for lots of coffee breaks). + broke, we tend to use (and we go for + lots of coffee breaks). The easiest way to see what (etc.) “really mean” is to run with , -- 1.7.10.4