Introduce two non-terminals called float_load and double_load, and impove the SSE2's add, sub, mul, div rules with the two terminals. The cost of the original add,sub,mul, div rules was changed to match the description of the BURS file.

Introduce two non-terminals called float_load and double_load. When these are called they save a memory operand on a stack in the BURS_Helpers, this is pulled out again in the corresponding float add/sub and double add by the call to consumeMO again from the BURS_Helpers. This makes the code a little cleaner and smaller. And thanks for Ian's kindly help.

Great work! I will look to apply the patch after next week. If someone wants to do it before me then please do. I think the only thing that is missing with your patch is a contribution statement. There's more information here: http://jikesrvm.org/Contributions . You need to copy and complete the text from here: http://docs.codehaus.org/download/attachments/74078/single-contrib.txt?version=1

STATEMENT OF ORIGIN FOR A SINGLE CONTRIBUTOR

I, LiGen:

(a) represent that either:

I am the only author and owner of the contributed software
(described as/entitled "Fix BURS SSE load/store rules"),
which was neither derived nor copied from any other software,
or

(ii) that any exception to is software which was obtained under the
CPL (Common Public License),

and

(b) hereby agree to license this contributed software under the CPL.

Patch committed in r13941.