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invoke.texi (Optimize Options): Document -frename-registers not being enabled by default at -O3. 

* doc/invoke.texi (Optimize Options): Document -frename-registers
	not being enabled by default at -O3.

From-SVN: r84546
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Ben Elliston 2004-07-12 03:35:17 +00:00 committed by Ben Elliston
parent 12cf89fae2
commit 4c59781d99
2 changed files with 6 additions and 2 deletions
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@ -1,3 +1,8 @@
2004-07-12 Ben Elliston <bje@au.ibm.com>
* doc/invoke.texi (Optimize Options): Document -frename-registers
not being enabled by default at -O3.
2004-07-11 Roger Sayle <roger@eyesopen.com>
* fold-const.c (fold) <PLUS_EXPR>: Canonicalize X + -C as X - C for

3
gcc/doc/invoke.texi
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@ -3842,8 +3842,7 @@ invoking @option{-O2} on programs that use computed gotos.
@opindex O3
Optimize yet more. @option{-O3} turns on all optimizations specified by
@option{-O2} and also turns on the @option{-finline-functions},
@option{-fweb}, @option{-frename-registers}
and @option{-fgcse-after-reload} options.
@option{-fweb} and @option{-fgcse-after-reload} options.
@item -O0
@opindex O0