[tremor] [PATCH] another additional 15% performance gain

[slothead]

The unusual 64-bit multiply code in the arm ce looks like it needs to do 64x32 to get a 64 bit
result.  I.e., one operand is being promoted to 64 bits then multiplied by another 32/64-bit
operand.  Doing int32 * int32 -> int64 ... and then what do you do with the int64?, is probably what
the compiler dude thought, so unless he sees you cast (int64)int32 * int32 you can't get an int64
result.  That's why inline assembly is a must for any decent HiPerf compiler, more so for ones that
don't optimize well.

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