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invoke.texi: Documentation for my previous commit.

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* doc/invoke.texi: Documentation for my previous commit.
	* doc/passes.texi: Ditto.

From-SVN: r62580
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Zdenek Dvorak 2003-02-08 15:51:06 +01:00 committed by Zdenek Dvorak
parent 617b465c7f
commit 01a132bbda
3 changed files with 27 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2003-02-08 Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz>
* doc/invoke.texi: Documentation for my previous commit.
* doc/passes.texi: Ditto.
2003-02-08 Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz>
* cfgloop.h (fix_loop_placement, can_duplicate_loop_p,

16
gcc/doc/invoke.texi
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@ -290,7 +290,7 @@ in the following sections.
-fsched-spec-load-dangerous -fsignaling-nans @gol
-fsingle-precision-constant -fssa -fssa-ccp -fssa-dce @gol
-fstrength-reduce -fstrict-aliasing -ftracer -fthread-jumps @gol
-funroll-all-loops -funroll-loops @gol
-funroll-all-loops -funroll-loops -funswitch-loops @gol
--param @var{name}=@var{value}
-O -O0 -O1 -O2 -O3 -Os}
@ -3171,7 +3171,8 @@ Dump after conversion from registers to stack, to @file{@var{file}.31.stack}.
Dump after local register allocation, to @file{@var{file}.23.lreg}.
@item L
@opindex dL
Dump after loop optimization, to @file{@var{file}.12.loop}.
Dump after loop optimization passes, to @file{@var{file}.12.loop} and
@file{@var{file}.18.loop2}.
@item M
@opindex dM
Dump after performing the machine dependent reorganization pass, to
@ -4270,6 +4271,11 @@ the loop is entered. This usually makes programs run more slowly.
@option{-funroll-all-loops} implies the same options as
@option{-funroll-loops},
@item -funswitch-loops
@opindex funswitch-loops
Move branches with loop invariant conditions out of the loop, with duplicates
of the loop on both branches (modified according to result of the condition).
@item -fprefetch-loop-arrays
@opindex fprefetch-loop-arrays
If supported by the target machine, generate instructions to prefetch
@ -4372,6 +4378,12 @@ The maximum number of instructions that a loop should have if that loop
is unrolled, and if the loop is unrolled, it determines how many times
the loop code is unrolled.
@item max-unswitch-insns
The maximum number of insns of an unswitched loop.
@item max-unswitch-level
The maximum number of branches unswitched in a single loop.
@item hot-bb-count-fraction
Select fraction of the maximal count of repetitions of basic block in program
given basic block needs to have to be considered hot.

10
gcc/doc/passes.texi
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@ -333,10 +333,16 @@ Its source files are @file{loop.c} and @file{unroll.c}, plus the header
some functions in @file{integrate.c} and the header @file{integrate.h}.
Loop dependency analysis routines are contained in @file{dependence.c}.
Second loop optimization pass takes care of basic block level optimalizations --
unswitching loops. The source files are
@file{cfgloopanal.c} and @file{cfgloopmanip.c} containing generic loop
analysis and manipulation code, @file{loop-init.c} with initialization and
finalization code, @file{loop-unswitch.c} for loop unswitching.
@opindex dL
The option @option{-dL} causes a debugging dump of the RTL code after
this pass. This dump file's name is made by appending @samp{.loop} to
the input file name.
these passes. The dump file names are made by appending @samp{.loop} and
@samp{.loop2} to the input file name.
@cindex jump bypassing
@item