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-rw-r--r--gcc/doc/invoke.texi6
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 93e01f8..b25d8cf 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -6870,8 +6870,10 @@ at @option{-O} and higher.
@item -ftree-loop-linear
@opindex ftree-loop-linear
-Perform linear loop transformations on tree. This flag can improve cache
-performance and allow further loop optimizations to take place.
+Perform loop interchange transformations on tree. Same as
+@option{-floop-interchange}. 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-interchange
@opindex floop-interchange