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author | obrien <obrien@FreeBSD.org> | 1999-11-01 20:09:07 +0000 |
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committer | obrien <obrien@FreeBSD.org> | 1999-11-01 20:09:07 +0000 |
commit | 7c732ab5d0679f828a65aee8665367d46d2fd129 (patch) | |
tree | 78e3ecf635417a557a1a965cf719283eb5369c10 /contrib | |
parent | 68ba60f3014d28b600fb688ea6baaa566b50c451 (diff) | |
download | FreeBSD-src-7c732ab5d0679f828a65aee8665367d46d2fd129.zip FreeBSD-src-7c732ab5d0679f828a65aee8665367d46d2fd129.tar.gz |
This brings rev 1.2 (reality check and document profiling extensions)
into GCC 2.95.2.
Diffstat (limited to 'contrib')
-rw-r--r-- | contrib/gcc/invoke.texi | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/contrib/gcc/invoke.texi b/contrib/gcc/invoke.texi index 4b1ddae..2937d39 100644 --- a/contrib/gcc/invoke.texi +++ b/contrib/gcc/invoke.texi @@ -2206,10 +2206,10 @@ perform loop unrolling or function inlining when you specify @samp{-O2}. As compared to @samp{-O}, this option increases both compilation time and the performance of the generated code. -@samp{-O2} turns on all optional optimizations except for loop unrolling -and function inlining. It also turns on the @samp{-fforce-mem} option -on all machines and frame pointer elimination on machines where doing so -does not interfere with debugging. +@samp{-O2} turns on all optional optimizations except for loop unrolling, +function inlining, and strict aliasing optimizations. It also turns on the +@samp{-fforce-mem} option on all machines and frame pointer elimination on +machines where doing so does not interfere with debugging. @item -O3 Optimize yet more. @samp{-O3} turns on all optimizations specified by @@ -2367,9 +2367,9 @@ math functions. @c --mew 26jan93 The following options control specific optimizations. The @samp{-O2} option turns on all of these optimizations except @samp{-funroll-loops} -and @samp{-funroll-all-loops}. On most machines, the @samp{-O} option -turns on the @samp{-fthread-jumps} and @samp{-fdelayed-branch} options, -but specific machines may handle it differently. +@samp{-funroll-all-loops}, and @samp{-fstrict-aliasing}. On most machines, the +@samp{-O} option turns on the @samp{-fthread-jumps} and @samp{-fdelayed-branch} +options, but specific machines may handle it differently. You can use the following flags in the rare cases when ``fine-tuning'' of optimizations to be performed is desired. |