https://bugs.llvm.org/show_bug.cgi?id=35878
Davide Italiano <dav...@freebsd.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dav...@freebsd.org
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Davide Italiano <dav...@freebsd.org> ---
Your program exhibits UB, as you're missing a `return`.
Change it to:
#include <cstdint>
int foo(uint32_t* __restrict r, uint32_t* __restrict ptr)
{
for (int j = 0; j < 8; ++j)
r[j] = *(ptr++);
return 0;
}
And you get:
foo(unsigned int*, unsigned int*): # @foo(unsigned int*, unsigned int*)
vmovups ymm0, ymmword ptr [rsi]
vmovups ymmword ptr [rdi], ymm0
xor eax, eax
vzeroupper
ret
which is a vectorized sequence.
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