On Thu, Oct 11, 2012 at 03:42:44PM +0200, Richard Biener wrote:
> On Wed, Oct 10, 2012 at 7:49 PM, Jakub Jelinek <ja...@redhat.com> wrote:
> > This patch folds REDUC_*_EXPR (e.g. on pr54877.c -Ofast -mavx
> > testcase we end up with unfolded REDUC_PLUS_EXPR till *.optimized).
> >
> > Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
>
> Eh, I didn't realize the result type is a vector ... can you adjust the docs
> in tree.def to reflect that the _result_ is a vector with the first element
> having the result and operand 0 is the vector being reduced?
The comment wants to say that, but doesn't do it correctly:
Operand 0 is a vector; the first element in the vector has the result.
Operand 1 is a vector. */
because obviously it doesn't have two operands, just one. So it should be
perhaps
Operand 0 is a vector.
The expression returns a vector of the same type, with the first
element in the vector holding the result of the reduction. */
?
Jakub
