https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67323
Bug ID: 67323
Summary: Use non-unit stride loads by preference when
applicable
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: michael.collison at linaro dot org
Target Milestone: ---
On arm targets the following code fails to generate a vld3:
struct pixel {
char r,g,b;
};
void
t2(int len, struct pixel * __restrict p, struct pixel * __restrict x)
{
len = len & ~31;
for (int i = 0; i < len; i++){
p[i].r = x[i].r * 2;
p[i].g = x[i].g * 3;
p[i].b = x[i].b * 4;
}
}
Yes the same code with line 11 changed to:
p[i].g = x[i].g;
does generate a vld3.
