This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [PATCH] Fix multiply-add regressions after expand-from-SSA
>> OTOH this asks for detecting this stuff early, before partitioning
>> (together with uncprop maybe). Which would make it instruction
>> selection (or rather optab matching).
Some of the tree-ssa-math-opts.c passes already do this.
> Btw, for widening multiplication and addition we even have tree codes
> (which is more convenient for obvious reasons).
For fused-multiply-add there is fma so we don't need any new builtin.
Paolo