https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71264
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
So the issue is that the code is alread "vectorized" but the footype vector
type
has SImode and thus get_vectype_for_scalar_type happily returns V4SI as vector
type. But the rest of the vectorizer isn't really prepared to handle vector
types in the to-be-vectorized IL.
I have a patch that ends up producing
test:
.LFB0:
.cfi_startproc
movd (%rsi), %xmm1
movdqu (%rdi), %xmm2
pshufd $0, %xmm1, %xmm0
pxor %xmm2, %xmm0
movups %xmm0, (%rdi)
ret
