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* invoke.texi: Document -fssa flag.

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From-SVN: r33471
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Alex Samuel 2000-04-27 07:10:55 +00:00 committed by Alex Samuel
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gcc/ChangeLog
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@ -1,3 +1,7 @@
2000-04-26 Alex Samuel <samuel@codesourcery.com>
* invoke.texi: Document -fssa flag.
2000-04-26 Richard Henderson <rth@cygnus.com>
* flow.c (count_reg_sets_1): Remove.

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gcc/invoke.texi
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@ -166,7 +166,7 @@ in the following sections.
-fno-function-cse -fno-inline -fno-peephole
-fomit-frame-pointer -foptimize-register-moves -foptimize-sibling-calls
-fregmove -frerun-cse-after-loop -frerun-loop-opt -freduce-all-givs
-fschedule-insns -fschedule-insns2 -fstrength-reduce
-fschedule-insns -fschedule-insns2 -fssa -fstrength-reduce
-fstrict-aliasing -fthread-jumps -funroll-all-loops
-funroll-loops
-O -O0 -O1 -O2 -O3 -Os
@ -2832,6 +2832,13 @@ need be executed.
If @var{n} is not specified, use a machine-dependent default.
@item -fssa
Perform optimizations in static single assignment form. Each function's
flow graph is translated into SSA form, optimizations are performed, and
the flow graph is translated back from SSA form. (Currently, no
SSA-based optimizations are implemented, but converting into and out of
SSA form is not an invariant operation, and generated code may differ.)
@end table
@node Preprocessor Options