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re PR tree-optimization/52307 (Segmentation fault in Lapack with -O3 -floop-flatten -floop-strip-mine)

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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
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Thomas Koenig 2012-02-28 10:10:12 +00:00 committed by Richard Biener
parent f37cf6a901
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2 changed files with 11 additions and 2 deletions
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@ -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

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gcc/doc/invoke.texi
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@ -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