On 9/6/19 7:36 AM, Martin Liška wrote:
> Hi.
>
> I've been working on transition of cond expressions to match.pd.
> With my changes I noticed there's one wrong pattern that leads to:
>
> Transforming _6 > _7 & _6 < _7 into 0
> ...
> /home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/vector-compare-3.c:20:1:
> error: the first argument of a ‘vec_cond_expr’ must be of a boolean vector
> type of the same number of elements as the result
> 20 | g (v4i *x, v4i const *y, v4i *z, v4i *t)
> | ^
> vector(4) int
> _Bool
> _9 = VEC_COND_EXPR <0, { -1, -1, -1, -1 }, { 0, 0, 0, 0 }>;
>
> which is wrong.
>
> Proper simlification is:
> Transforming _6 > _7 & _6 < _7 into { 0, 0, 0, 0 }
>
> Patch can bootstrap on x86_64-linux-gnu and survives regression tests.
>
> Ready to be installed?
> Thanks,
> Martin
>
> gcc/ChangeLog:
>
> 2019-09-06 Martin Liska <mli...@suse.cz>
>
> * match.pd: For vector types, take type from a vector argument
> of the expression.
Seems like you're going to have an overly long time in match.pd.
Perhaps store the desired type into a local or split the line.
OK with that change.
jeff
