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| author | Thomas Koenig <tkoenig@gcc.gnu.org> | 2012-02-28 10:10:12 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2012-02-28 10:10:12 +0000 |
| commit | b0eaa5b4935b73088b423d2d078a4b361c62e288 (patch) | |
| tree | 41733e6849f0cf18452e56e29f40117253ceeed1 /gcc/doc | |
| parent | f37cf6a901f8146f3bb95245738ab262d0b5aa39 (diff) | |
| download | gcc-b0eaa5b4935b73088b423d2d078a4b361c62e288.zip gcc-b0eaa5b4935b73088b423d2d078a4b361c62e288.tar.gz gcc-b0eaa5b4935b73088b423d2d078a4b361c62e288.tar.bz2 | |
re PR tree-optimization/52307 (Segmentation fault in Lapack with -O3 -floop-flatten -floop-strip-mine)
2012-02-28 Thomas Koenig <tkoenig@gcc.gnu.org>
PR tree-optimization/53207
* doc/invoke.texi: Document as experimental and relying on graphite.
From-SVN: r184623
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 7d4926a..d69f1fb 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -7289,8 +7289,12 @@ dead code elimination in loops. @item -floop-flatten @opindex floop-flatten Removes the loop nesting structure: transforms the loop nest into a -single loop. This transformation can be useful to vectorize all the -levels of the loop nest. +single loop. This transformation can be useful as an enablement +transform for vectorization and parallelization. This feature +is experimental. +To use this code transformation, GCC has to be configured +with @option{--with-ppl} and @option{--with-cloog} to enable the +Graphite loop transformation infrastructure. @item -floop-parallelize-all @opindex floop-parallelize-all |