On 9/5/18 5:49 AM, a...@codesourcery.com wrote: > > The vec_select operator is documented to require a const_int for the lane > selector operand, but GCN has an instruction that can select the lane at > runtime, so it seems reasonable to remove this restriction. > > This patch simply replaces assertions that the operand is constant with early > exits from the optimizers. I think it's reasonable that vec_select with a > non-constant operand cannot be optimized, yet. > > Also included is the necessary documentation tweak. > > 2018-09-05 Andrew Stubbs <a...@codesourcery.com> > > gcc/ > * doc/rtl.texi: Adjust vec_select description. > * simplify-rtx.c (simplify_binary_operation_1): Allow VEC_SELECT to use > non-constant selectors. OK. Seems like it could go in now since you're just early returning rather than asserting -- it should affect any in-tree port.
jeff
