[patch] Cell fixes

[Jules Bergmann]

This patch
  - Adds loop fusion init/fini calls before block copy uses get to
    access values.  This is necessary if copying from an expression
    block with Return_blocks.

    This is a temporary fix.  The real fix is to make get/put do the
    right thing for Return_blocks, that is check if the result has been
    computed.  In cases where get will be called multiple times that this
    overhead would have an impact (such as loop fusion evaluators), an
    expression tree transformation would be done to replace the return
    blocks with regular blocks.  However, this is a day or two of work
    so I've created an issue (#132).

  - Pulls additional command line arguments from the SVPP_OPT environment
    variable.

	export SVPP_OPTS="--svpp-num-spes 1"
	./run-program

    Is equiv to

	./run-program --svpp-num-spes 1

    I added this to run 'make check' without using all the 8 SPEs, but it
    should be useful for other things as well.

  - Fix Cbe dispatch for vmul to check if type is supported (some tests
    were attempting to perform double and int vector-multiplies).

Patch applied, but suggestions for simplifying how arguments are pulled 
from the environment are welcome!

				thanks
				-- Jules



-- 
Jules Bergmann
CodeSourcery
jules at codesourcery.com
(650) 331-3385 x705
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