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| author | charlet <charlet@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-04-20 10:07:30 +0000 |
|---|---|---|
| committer | charlet <charlet@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-04-20 10:07:30 +0000 |
| commit | 234aa17e4220f5d86485dd188b2b0b2171a9c02e (patch) | |
| tree | 3f5e6659bb1a3d04e80fe22da42dc8149d0f0e0a /gcc/ada/gnat_ugn.texi | |
| parent | f38c80845185fcfa4b73fb4ef523aada041d574d (diff) | |
| download | gcc-234aa17e4220f5d86485dd188b2b0b2171a9c02e.tar.gz | |
2009-04-20 Eric Botcazou <ebotcazou@adacore.com>
* gnat_ugn.texi: Add documentation for -fno-ivopts.
2009-04-20 Ed Schonberg <schonberg@adacore.com>
* sem_ch10.adb (Analyze_Context): Do not analyze a unit in a
with_clause if it is the main unit.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@146390 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/ada/gnat_ugn.texi')
| -rw-r--r-- | gcc/ada/gnat_ugn.texi | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/ada/gnat_ugn.texi b/gcc/ada/gnat_ugn.texi index 7d573f7175e..e9b5a664791 100644 --- a/gcc/ada/gnat_ugn.texi +++ b/gcc/ada/gnat_ugn.texi @@ -3815,6 +3815,15 @@ if @option{-O2} is used. Suppresses inlining of subprograms local to the unit and called once from within it, which is enabled if @option{-O1} is used. +@item -fno-ivopts +@cindex @option{-fno-ivopts} (@command{gcc}) +Suppresses high-level loop induction variable optimizations, which are +enabled if @option{-O1} is used. These optimizations are generally +profitable but, for some specific cases of loops with numerous uses +of the iteration variable that follow a common pattern, they may end +up destroying the regularity that could be exploited at a lower level +and thus producing inferior code. + @item -fno-strict-aliasing @cindex @option{-fno-strict-aliasing} (@command{gcc}) Causes the compiler to avoid assumptions regarding non-aliasing |