On Fri, Sep 13, 2013 at 8:06 PM, Cong Hou wrote:
> A new test case is added to testsuite/gcc.dg/vect, which will fail
> without this patch and pass with it. Bootstrap also get passed. No
> additional test failure is introduced.
>
> The new test case includes a dot product on two arrays with short
A new test case is added to testsuite/gcc.dg/vect, which will fail
without this patch and pass with it. Bootstrap also get passed. No
additional test failure is introduced.
The new test case includes a dot product on two arrays with short and
int types. The loop will still be vectorized (using pun
On Thu, Sep 12, 2013 at 3:16 AM, Cong Hou wrote:
> Hi
>
> There is a bug in the function vect_recog_dot_prod_pattern() in
> tree-vect-patterns.c. This function checks if a loop is of dot
> production pattern. Specifically, according to the comment of this
> function:
>
> /*
> Try to find the foll
Can you add a test case to the regression suite?
When the type of arguments are unsigned short/unsigned int, GCC does
not vectorize the loop anymore -- this is worth a separate bug to
track. punpcklwd instruction can be used to do zero extension of the
short type.
David
On Wed, Sep 11, 2013 at 6
Hi
There is a bug in the function vect_recog_dot_prod_pattern() in
tree-vect-patterns.c. This function checks if a loop is of dot
production pattern. Specifically, according to the comment of this
function:
/*
Try to find the following pattern:
type x_t, y_t;
TYPE1 prod;
TYPE2 su
