http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50088
--- Comment #16 from H.J. Lu <hjl.tools at gmail dot com> 2011-08-17 14:37:35
UTC ---
The testcase has ...
int n8 = (arr[7] * 9 + 8) & 15;
for (i = 0; i < len; i+=8)
{
n1 = (n1 + 1) & 15;
s += arr[i] << n1;
The shift count is 32bit, which causes 32bit spill. Since shift/rotate
instructions only take 8bit register (CL) as shift count, we load 8bit
into CL. How do we solve this?
