x64: Optimize some lowerings using ptest#13462
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This commit handles a few more patterns that the `ptest` instruction can be used for on x64, notably when testing `v128` values for equality. This additionally handles cases where `v128.and`'d values are used for a branch which is naturally handled by the `ptest` instruction, too. Closes bytecodealliance#13405
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This commit handles a few more patterns that the
ptestinstruction can be used for on x64, notably when testingv128values for equality. This additionally handles cases wherev128.and'd values are used for a branch which is naturally handled by theptestinstruction, too.Closes #13405