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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 8 |
2 files changed, 11 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e8efead..ac76ef8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2012-02-28 Thomas Koenig <tkoenig@gcc.gnu.org> + + PR tree-optimization/53207 + * doc/invoke.texi: Document as experimental and relying on graphite. + 2012-02-28 Georg-Johann Lay <avr@gjlay.de> * config/avr/avr-devices.c (avr_mcu_type): Adjust NULL part 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 |