On 06/30/2015 10:04 AM, Alan Lawrence wrote:
Jeff Law wrote:
Thanks. Does running the phi-only propagator after the loop header
copying help? At first glance it would seem that it ought to
propagate the values of those degenerate PHIs then eliminate those PHIs.
It was written to cleanup
Jeff Law wrote:
Thanks. Does running the phi-only propagator after the loop header
copying help? At first glance it would seem that it ought to propagate
the values of those degenerate PHIs then eliminate those PHIs.
It was written to cleanup after jump threading which has a tendency to
On 06/19/2015 11:38 AM, Alan Lawrence wrote:
Jeff Law wrote:
On 05/22/2015 09:42 AM, Alan Lawrence wrote:
This patch does so (and makes slightly less conservative, to tackle the
example above). I found I had to make this a separate pass, so that the
phi nodes were cleaned up at the end of the
Richard Biener wrote:
Apart from Jeffs comment - the usual fix for the undesired
vectorization is to put
a __asm__ volatile (); in the loop.
In vect-strided-a-u16-i4.c, narrowing the scope of the declaration seemed to
preserve the original intent. I've been able to drop the other testsuite
Jeff Law wrote:
On 05/22/2015 09:42 AM, Alan Lawrence wrote:
This patch does so (and makes slightly less conservative, to tackle the
example above). I found I had to make this a separate pass, so that the
phi nodes were cleaned up at the end of the pass before running
tree_if_conversion.
What
On Fri, May 22, 2015 at 5:42 PM, Alan Lawrence alan.lawre...@arm.com wrote:
This example which I wrote to test ifconversion, currently fails to
if-convert or vectorize:
int foo ()
{
for (int i = 0; i 32 ; i++)
{
int m = (a[i] i) ? 5 : 4;
b[i] = a[i] * m;
}
}
On 05/22/2015 09:42 AM, Alan Lawrence wrote:
This patch does so (and makes slightly less conservative, to tackle the
example above). I found I had to make this a separate pass, so that the
phi nodes were cleaned up at the end of the pass before running
tree_if_conversion. Also at this stage in
This example which I wrote to test ifconversion, currently fails to if-convert
or vectorize:
int foo ()
{
for (int i = 0; i 32 ; i++)
{
int m = (a[i] i) ? 5 : 4;
b[i] = a[i] * m;
}
}
...because jump-threading in dom1 rearranged the loop into a form that neither
