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1 Commits (3c6e66dc9612d677786aec6fed22568f46183813)

Author SHA1 Message Date
Paul Mackerras 24a4a796ce execute: Consolidate count-leading/trailing-zeroes implementations 
This adds combinatorial logic that does 32-bit and 64-bit count
leading and trailing zeroes in one unit, and consolidates the
four instructions under a single OP_CNTZ opcode.

This saves 84 slice LUTs on the Arty A7-100.

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