By delegating to the macro-assembler, emit AVX instructions for some
float opcodes (float sqrt, round, conversions to and from int,
extract/insert/load word).

Since they now support AVX, we rename the instruction ops to remove the
SSE prefix, changing it to be IA32.

Bug: v8:12148
Change-Id: Ib488f03928756e7d85ab78e6cb28eb869e0641f9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3131374Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76755}