x86 backend doesn't parse vfmaddsub231pd assembly instruction

[WiserOrb]

Zig Version

0.15.0-dev.767+201c0f54a

Steps to Reproduce and Observed Behavior

When using the x86 backend, it doesn't recognize the following asm block containing vfmaddsub231pd and variants

asm("vfmaddsub231pd %[reduced], %[shift], %[shifted]"
    : [shifted] "+&x" (shifted)
    : [shift] "x" (shift_real_vec),
      [reduced] "x" (reduced));

Expected Behavior

Ideally the x86 backend should be able to parse every x86 intruction, at least AVX2