compile-time usage on large compilation units. It is not enabled by
default at any optimization level.
-@item -fipa-profile
-@opindex fipa-profile
-Perform interprocedural profile propagation. The functions called only from
-cold functions are marked as cold. Also functions executed once (such as
-@code{cold}, @code{noreturn}, static constructors or destructors) are identified. Cold
-functions and loop less parts of functions executed once are then optimized for
-size.
-Enabled by default at @option{-O} and higher.
-
@item -fipa-cp
@opindex fipa-cp
Perform interprocedural constant propagation.
@item graphite-max-nb-scop-params
To avoid exponential effects in the Graphite loop transforms, the
-number of parameters in a SCoP is bounded by 10.
+number of parameters in a Static Control Part (SCoP) is bounded. The
+default value is 10 parameters. A variable whose value is unknown at
+compile time and defined outside a SCoP is a parameter of the SCoP.
+
+@item graphite-max-bbs-per-function
+To avoid exponential effects in the detection of SCoPs, the size of
+the functions analyzed by Graphite is bounded. The default value is
+100 basic blocks.
+
+@item loop-block-tile-size
+Loop blocking or strip mining transforms, enabled with
+@option{-floop-block} or @option{-floop-strip-mine}, strip mine each
+loop in the loop nest by a given number of iterations. The strip
+length can be changed using the @option{loop-block-tile-size}
+parameter. The default value is 51 iterations.
@end table
@end table
OSDN Git Service
