Paul Mackerras e6a5f237bc FPU: Implement fmul[s] ...

This implements the fmul and fmuls instructions.

For fmul[s] with denormalized operands we normalize the inputs
before doing the multiplication, to eliminate the need for doing
count-leading-zeroes on P.  This adds 3 or 5 cycles to the
execution time when one or both operands are denormalized.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

2020-09-03 17:45:07 +10:00

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