[dev.simd] cmd/compile: fix holes in mask peepholes
It turns out that ".Masked" is implemented by VPANDQ *and* VPANDD.
The shape of bitwise AND doesn't matter, the correctness of the rules is
guaranteed by the way the mask is generated.
This CL fix the holes in the peephole rules.
Change-Id: I2d15c4d17afed6fdbb2f3905a51b2c5c2f673348
Reviewed-on: https://go-review.googlesource.com/c/go/+/703257
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: David Chase <drchase@google.com>