On Fri, 18 Sep 2015, Michael Collison wrote:
Can you elaborate on merging the patterns using 'ext' as mentioned in your post? I don't see any documentation or examples.
https://gcc.gnu.org/onlinedocs/gccint/The-Language.html "for" lets you iterate on several variables at the same time. For instance, (for bitop (bit_and bit_ior) rbitop (bit_ior bit_and) (simplify (bitop:c (rbitop:c @0 @1) (bit_not@2 @0)) (bitop @1 @2))) expands to (simplify (bit_and:c (bit_ior:c @0 @1) (bit_not@2 @0)) (bit_and @1 @2)) (simplify (bit_ior:c (bit_and:c @0 @1) (bit_not@2 @0)) (bit_ior @1 @2)) there are other examples using (for cmp (eq ne) icmp (ne eq) or (for cmp (simple_comparison) scmp (swapped_simple_comparison) and you can have repetitions (for logs (LOG LOG LOG2 LOG2 LOG10 LOG10) exps (SQRT CBRT) (the iteration wraps around for exps). -- Marc Glisse
