https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110428
JuzheZhong <juzhe.zhong at rivai dot ai> changed:
What |Removed |Added
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CC| |juzhe.zhong at rivai dot ai
--- Comment #3 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
Hi, I think for VLS vectors, we should be able the enhance CSE for this
following case:
#include <stdint.h>
void __attribute__((noinline,noclone))
foo (int *out, int *res, unsigned int n)
{
int mask[] = { 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1 };
int i;
for (i = 0; i < n+16; ++i)
{
if (mask[i])
out[i] = i;
}
int o0 = out[0];
int o7 = out[7];
int o14 = out[14];
int o15 = out[15];
res[0] = o0;
res[2] = o7;
res[4] = o14;
res[6] = o15;
}
since n is unsigned int number, i < n + 16, ARM SVE fail to CSE.
Is it right?
