[m-rev.] for review: added examples to mercury/extras/gator/README

[Samrith UONG]

On 2/15/06, Julien Fischer <juliensf at cs.mu.oz.au> wrote:
>
> On Wed, 15 Feb 2006, Samrith UONG wrote:
> > +The new program is in "benchmarks/progs/ray/proj.m", rather than
> > +"mercury/samples/hello.m".  The first thing that needs to be done is to
> > +copy the program's source code to each of the hosts.
>
> One item that should be on the TODO list for this is to automate that
> step.

That's a good idea.

> > +Suppose the evaluate.conf file (see section 3 for details) specifies two
> > +programs, both of which are compiled with gcc(1).  In this case, the
> > +first term would need to be a list of length $num_progs * 3 = 2 * 3 = 6.
> > +The second term would need to contain a list of gcc optimisation
> > +options, rather than mmc options.
> > +
> > +       [ 0.5, 0.5, 0.0, 0.0, 1.0, 1.0 ].
> > +
> > +       [ "-fbranch-probabilities", "-fcaller-saves", "-fcprop-registers" ].
> > +
>
> I suggest adding a separate set of configuration files that show how to
> optimise a simple C program with gcc as well.

How about just adding all the gcc options in the README?  It's fairly
long I suppose but not too hard to skip over.

	[ 0.5, 0.5, 0.0, 0.0, 1.0, 1.0 ].

	[ "-fbranch-probabilities", "-fcaller-saves",
	  "-fcprop-registers", "-fcse-follow-jumps",
	  "-fcse-skip-blocks", "-fdata-sections", "-fdelayed-branch",
	  "-fdelete-null-pointer-checks", "-fexpensive-optimizations",
	  "-ffast-math", "-ffloat-store", "-fforce-addr",
	  "-fforce-mem", "-ffunction-sections", "-fgcse", "-fgcse-lm",
	  "-fgcse-sm", "-floop-optimize", "-fcrossjumping",
	  "-fif-conversion", "-fif-conversion2", "-finline-functions",
	  "-fkeep-inline-functions", "-fkeep-static-consts",
	  "-fmerge-constants", "-fmerge-all-constants",
	  "-fmove-all-movables", "-fnew-ra", "-fno-branch-count-reg",
	  "-fno-default-inline", "-fno-defer-pop", "-fno-function-cse",
	  "-fno-guess-branch-probability", "-fno-inline",
	  "-fno-math-errno", "-fno-peephole", "-fno-peephole2",
	  "-funsafe-math-optimizations", "-ffinite-math-only",
	  "-fno-trapping-math", "-fno-zero-initialized-in-bss",
	  "-fomit-frame-pointer", "-foptimize-register-move",
	  "-foptimize-sibling-calls", "-fprefetch-loop-arrays",
	  "-freduce-all-givs", "-fregmove", "-frename-registers",
	  "-freorder-blocks", "-freorder-functions",
	  "-frerun-cse-after-loop", "-frerun-loop-opt",
	  "-fschedule-insns", "-fschedule-insns2",
	  "-fno-sched-interblock", "-fno-sched-spec",
	  "-fsched-spec-load", "-fsched-spec-load-dangerous",
	  "-fsignaling-nans", "-fsingle-precision-constant",
	  "-fssa", "-fssa-ccp", "-fssa-dce", "-fstrength-reduce",
	  "-fstrict-aliasing", "-ftracer", "-fthread-jumps",
	  "-funroll-all-loops", "-funroll-loops" ].

Other than that, I've made all the suggested changes.

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