https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103200
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2021-11-12
Keywords| |missed-optimization,
| |needs-bisection
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Target| |x86_64-*-* i?86-*-*
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. We now "spill"(?) to %rax:
vmovq %xmm0, %rax
vmovsd %xmm1, %xmm1, %xmm2
vaddsd %xmm1, %xmm2, %xmm0
vmovq %rax, %xmm1
vmovq %rax, %xmm2
vaddsd %xmm2, %xmm1, %xmm1
vaddsd %xmm1, %xmm0, %xmm0
compared to gcc 11:
vmovsd %xmm1, %xmm1, %xmm2
vaddsd %xmm1, %xmm2, %xmm2
vmovsd %xmm0, %xmm0, %xmm1
vaddsd %xmm0, %xmm1, %xmm0
vmovsd %xmm2, %xmm2, %xmm1
vaddsd %xmm1, %xmm0, %xmm0
