H.J. Lu wrote:
On Wed, Dec 4, 2013 at 9:29 AM, Jeff Law <l...@redhat.com> wrote:
On 12/04/13 09:14, H.J. Lu wrote:
+
+/* { dg-final { scan-rtl-dump "deleting noop move" "combine" { target
aarch64*-*-* } } } */
Any particular reason why it doesn't work for x86?
I don't think so. I'm pretty sure Tejas is focused on ARM platforms for the
obvious reason.
Then please add "i?86-*-* x86_64-*-*".
Hi,
I tried this test on x86_64. Though the same RTL gets generated
(set (reg:Sf) (vec_select:SF (reg:V4Sf) (parallel [const 0]))
for -msse2, this optimization does not seem to trigger. Only later in a
post-reload-split does it get eliminated to something like
(set (reg:SF 21 xmm0) (reg:SF 21 xmm0))
I suspect simplify_subreg_regno () may not be returning what we want here -
sorry, I don't know enough about x86 to debug deeper.
I could either keep this test case as is or if you could give it a quick look to
see why it does not trigger, it would be useful to add x86 to this test.
Thanks,
Tejas.
