On Tue, Apr 22, 2014 at 2:59 AM, Xinliang David Li davi...@google.com wrote:
Bin, when will the patch for the generic pass be available for review?
Hi,
The patch is still under working and reviewing. For arm we only need
to handle simple load/stores, so it may need to be extended to handle
On Mon, Apr 21, 2014 at 8:00 PM, Wei Mi w...@google.com wrote:
llvm will merge movsd/movhpd to movupd while gcc will not. The merge
is beneficial on x86 machines starting from Nehalem.
The patch is to add the merging in peephole.
bootstrap and regression pass. Is it ok for stage1?
Let's
Bin, when will the patch for the generic pass be available for review?
David
On Wed, Apr 9, 2014 at 7:27 PM, Bin.Cheng amker.ch...@gmail.com wrote:
On Thu, Apr 10, 2014 at 8:18 AM, Wei Mi w...@google.com wrote:
Hi,
For the testcase 1.c
#include emmintrin.h
double a[1000];
__m128d
On Thu, Apr 10, 2014 at 8:18 AM, Wei Mi w...@google.com wrote:
Hi,
For the testcase 1.c
#include emmintrin.h
double a[1000];
__m128d foo1() {
__m128d res;
res = _mm_load_sd(a[1]);
res = _mm_loadh_pd(res, a[2]);
return res;
}
llvm will merge movsd/movhpd to movupd while gcc
Hi Bin,
Yes, we have the same problem that if movsd and movhpd are separated,
peephole cannot merge them. The patch could solve the motivational
performance issue we saw to a good extent, but maybe there is still
space to improve if peephole misses some pairs. Glad to know you are
working on this
