Hi Kewen,
Just one quick note:
On Fri, Mar 08, 2019 at 09:40:30AM +0800, Kewen.Lin wrote:
> --- /dev/null
> +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr88497.c
> @@ -0,0 +1,18 @@
> +/* { dg-do compile } */
> +/* { dg-options "-O2 -ffast-math -fdump-tree-reassoc1" } */
> +typedef double v2df __attribute__ ((vector_size (16)));
> +double
> +test (double accumulator, v2df arg1[], v2df arg2[])
> +{
> + v2df temp;
> + temp = arg1[0] * arg2[0];
> + accumulator += temp[0] + temp[1];
> + temp = arg1[1] * arg2[1];
> + accumulator += temp[0] + temp[1];
> + temp = arg1[2] * arg2[2];
> + accumulator += temp[0] + temp[1];
> + temp = arg1[3] * arg2[3];
> + accumulator += temp[0] + temp[1];
> + return accumulator;
> +}
> +/* { dg-final { scan-tree-dump-times "BIT_FIELD_REF" 2 "reassoc1" } } */
Please write a word or two about what that test is testing? This helps
a lot when a test starts failing.
Segher
