On Thu, 6 Nov 2014, Richard Biener wrote:
+/* Simplify (A & B) OP0 (C & B) to (A OP0 C) & B. */
+/* (x | CST1) & CST2 -> (x & CST2) | (CST1 & CST2) */
As soon as there are 2+ operations in the result, this comment in
fwprop_ssa_val becomes outdated, no?
/* We continue matching along SSA use-def edges for SSA names
that are not single-use. Currently there are no patterns
that would cause any issues with that. */
(I am not opposing the patch, just trying to understand how things work
for when I'll propose new patterns)
--
Marc Glisse
